[OSL | CCIE_Voice] ntp for uccx server
all, do we need to set ntp for uccx server in exam ? and how to do it ? K___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] NTP issue
Hi all,HQ router has ntp source loopback 0 already and they ask to reference voice vlan of HQ from CUE.is there any way to meet this requirement? - not be able to ntp sourcing 2 interface, as fas as i know- just point to voice vlan from CUE not get ntp synced up ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP issue
ntp source loopback 0 is only required when the HQ router is a NTP peer or as an NTP client(requests would be sourced from this interfaces IP). You're second point is the way you should go. Point CUE to the voice vlan interface on the HQ router and it will respond from that interface. On Thu, Apr 4, 2013 at 10:25 AM, ikizoo4 kwon ikiz...@hotmail.com wrote: Hi all, HQ router has ntp source loopback 0 already and they ask to reference voice vlan of HQ from CUE. is there any way to meet this requirement? - not be able to ntp sourcing 2 interface, as fas as i know - just point to voice vlan from CUE not get ntp synced up ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP issue
thanks for clarification, let me check CUE side more. Subject: Re: [OSL | CCIE_Voice] NTP issue From: b...@ucguerrilla.com Date: Thu, 4 Apr 2013 14:35:40 -0400 CC: ccie_voice@onlinestudylist.com To: ikiz...@hotmail.com My understanding is that the ntp source command is only applicable to NTP requests sources from the host. The host will listen for NTP requests from other clients on any viable layer 3 interface on the system. IOW, it should work and if CUE couldn't recover clock the issue is likely lower in the stack. -Bill --William Bellblog: http://ucguerrilla.comtwitter: @ucguerrilla On Apr 4, 2013, at 1:25 PM, ikizoo4 kwon wrote:Hi all,HQ router has ntp source loopback 0 already and they ask to reference voice vlan of HQ from CUE.is there any way to meet this requirement? - not be able to ntp sourcing 2 interface, as fas as i know- just point to voice vlan from CUE not get ntp synced up___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP Server
That worked, thanks. Regards, Hugo From: Jason Aarons [mailto:scubajas...@gmail.com] Sent: Monday, December 17, 2012 8:43 PM To: Barrera, Hugo; ccie_voice@onlinestudylist.com Subject: RE: [OSL | CCIE_Voice] NTP Server Use the workaround in CSCsy13363 From: ccie_voice-boun...@onlinestudylist.commailto:ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of Barrera, Hugo Sent: Monday, December 17, 2012 6:28 PM To: ccie_voice@onlinestudylist.commailto:ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] NTP Server Hi, I always seem to have issues with getting my Site B and Site C RTR's to register NTP to the Site A RTR. My configs are below... scheduler allocate 2 1000 ntp source Loopback0 ntp server 10.10.100.2 ! I have also done: scheduler allocate 2 1000 ntp source Loopback0 ntp server 10.10.100.2 source Loopback0 ! Regards, Hugo ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP Server
For those who don't have access to Cisco's Bug Toolkit, this was the proposed solution: --8-- CSCti46834 Bug Details NTP sync problem with satellite link Symptom: A router may take as long as 15 minutes to synchronize its clock to an NTP server. Conditions: This is a known design problem with NTPv4, which was introduced in IOS 12.4(20)T. Workaround: Configure the iburst and burst options, for example: ntp server 10.0.47.1 burst iburst with this configured, NTP should synchronize in under 2 minutes. With the resolution of this bug CSCti46834, a new CLI is introduced: ntp maxdistance By increasing the maxdistance value from its default of 1, for example to 2 or 3, synchronization may be further expedited. --8-- -- Marko Milivojevic - CCIE #18427 (SP RS) Senior CCIE Instructor - IPexpert On Wed, Dec 19, 2012 at 10:25 AM, Barrera, Hugo hugo.barr...@nexusis.com wrote: That worked, thanks. Regards, Hugo From: Jason Aarons [mailto:scubajas...@gmail.com] Sent: Monday, December 17, 2012 8:43 PM To: Barrera, Hugo; ccie_voice@onlinestudylist.com Subject: RE: [OSL | CCIE_Voice] NTP Server Use the workaround in CSCsy13363 From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of Barrera, Hugo Sent: Monday, December 17, 2012 6:28 PM To: ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] NTP Server Hi, I always seem to have issues with getting my Site B and Site C RTR’s to register NTP to the Site A RTR. My configs are below… scheduler allocate 2 1000 ntp source Loopback0 ntp server 10.10.100.2 ! I have also done: scheduler allocate 2 1000 ntp source Loopback0 ntp server 10.10.100.2 source Loopback0 ! Regards, Hugo ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] NTP Server
Hi, I always seem to have issues with getting my Site B and Site C RTR's to register NTP to the Site A RTR. My configs are below... scheduler allocate 2 1000 ntp source Loopback0 ntp server 10.10.100.2 ! I have also done: scheduler allocate 2 1000 ntp source Loopback0 ntp server 10.10.100.2 source Loopback0 ! Regards, Hugo ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP Server
What do the following say: - sh ntp assoc - sh ntp assoc detail - sh ntp status - debug ntp events - debug ntp all -- Marko Milivojevic - CCIE #18427 (SP RS) Senior CCIE Instructor - IPexpert On Mon, Dec 17, 2012 at 3:27 PM, Barrera, Hugo hugo.barr...@nexusis.com wrote: Hi, I always seem to have issues with getting my Site B and Site C RTR’s to register NTP to the Site A RTR. My configs are below… scheduler allocate 2 1000 ntp source Loopback0 ntp server 10.10.100.2 ! I have also done: scheduler allocate 2 1000 ntp source Loopback0 ntp server 10.10.100.2 source Loopback0 ! Regards, Hugo ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP Server
Use the workaround in CSCsy13363 From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of Barrera, Hugo Sent: Monday, December 17, 2012 6:28 PM To: ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] NTP Server Hi, I always seem to have issues with getting my Site B and Site C RTR's to register NTP to the Site A RTR. My configs are below. scheduler allocate 2 1000 ntp source Loopback0 ntp server 10.10.100.2 ! I have also done: scheduler allocate 2 1000 ntp source Loopback0 ntp server 10.10.100.2 source Loopback0 ! Regards, Hugo ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] NTP daylight savings
Hello, I have the following scenario where ucm is syncing time from the router loopback address. On the router I have the following: ntp server 10.10.100.2 ntp source lo0 clock timezone PST -8 clock summer-time PDT reccuring Given the above configuration, when I create the date/time group in UCM, do I have to select the entry with the daylight time? And if i not configure daylight savings time on the router (no clock summer-time PDT reccuring) and I choose the entry with daylight time in UCM is that ok? Thank you ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp master- is it necessary
No problem at all :-) Ramy Date: Mon, 13 Aug 2012 20:31:42 -0700 From: vinayak_...@yahoo.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary To: ramyoth...@hotmail.com; daqui...@cisco.com CC: ccie_voice@onlinestudylist.com; michael.se...@compucom.com ramy, i apologize for not understanding the question properly... i overlooked at your question.. krishna. From: Ramy Abdelrahim ramyoth...@hotmail.com To: vinayak_...@yahoo.com; daqui...@cisco.com Cc: ccie_voice@onlinestudylist.com; michael.se...@compucom.com Sent: Monday, August 13, 2012 9:08 PM Subject: RE: [OSL | CCIE_Voice] ntp master- is it necessary Krishna, My question was apart from yours, I was trying to sync one of the gateways (Site-B) with its internal clock just for testing to see if it'll provide the same result as when synched with external source. Dan advised that this can be done with using the ntp master command on Site-B GW, just configure the 2 clock commands. Regards,Ramy Date: Mon, 13 Aug 2012 18:50:45 -0700 From: vinayak_...@yahoo.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary To: daqui...@cisco.com; ramyoth...@hotmail.com CC: ccie_voice@onlinestudylist.com; michael.se...@compucom.com dan Ramy, the question here is hq router is the one that provides the time to ucm..and therefore without putting the command ntp source how can cucm can know it has to synchronize its clock with hq router...i m sure that when you providing time from hq router to cucm phones, then you must use ntp master as well ntp source to which the time on the hq router binds and apparently the cucm can reference the clock from hq router as well... thank youkrishna From: Dan Quinlan (daquinla) daqui...@cisco.com To: Ramy Abdelrahim ramyoth...@hotmail.com Cc: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com; michael.se...@compucom.com michael.se...@compucom.com Sent: Monday, August 13, 2012 7:33 PM Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary If it is UCM, then the time on the router is only relevant to the phones when in SRST. When registered to the UCM, the phones are getting their time information from the UCM, specifically the date time group configured on the device pool that contains those phones. DQ d...@cisco.com Sent from my iPhone On Aug 13, 2012, at 8:26 PM, Ramy Abdelrahim ramyoth...@hotmail.com wrote: I think in your scenario you're assuming that this is a CME site. Actually, this site is a UCM remote site not CME. So, in this case do you think the 2 clock commands are sufficient? Regards, Ramy From: daqui...@cisco.com To: ramyoth...@hotmail.com CC: michael.se...@compucom.com; ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Date: Mon, 13 Aug 2012 23:51:17 + You don't need the ntp master or the ntp source commands. Just the two clock commands that you have, the time-zone command under telephony service, and make sure you set the type command under the ephone (eg type 7965). Do a create cnf under telephony service and restart or reset the ephones. DQ d...@cisco.com Sent from my iPhone On Aug 13, 2012, at 6:04 PM, Ramy Abdelrahim ramyoth...@hotmail.com wrote: Dear All, Regarding the same subject, I tried to sync a gateway with its internal clock using ntp master only. The clock was synched but not as what's displayed on the IP phones at that site. I realized also that the stratum was higher than 10. My configuration was as follows: clock timezone EST -5 clock summer-time EDT recurring ntp master I don't know if there's a configuration missing here or not. Regard, Ramy From: michael.se...@compucom.com To: daqui...@cisco.com Date: Sun, 5 Aug 2012 13:32:39 -0400 CC: ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Thanks Dan. I'm not trying to make it work yes it works fine without the command, but instead I'm trying to replicate what Cisco might be looking for on the lab. Frankly I don't know what they are looking for in these types of scenarios but don't want to take the chance of losing points because they think the command should be there. Just cause it works doesn't mean you will get the points. Michael Sears -Original Message- From: Dan Quinlan (daquinla) [mailto:daqui...@cisco.com] Sent: Sunday, August 05, 2012 11:27 AM To: Sears, Michael (msears) Cc: ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Michael, all, You do NOT need the NTP master command on a router whenever that router is synchronizing with an external source, even if other devices are to synchronize with that router. Michael - in your config, you can remove the NTP master command and everything will synchronize with the HQ router just fine. Ntp master should really only be used when
Re: [OSL | CCIE_Voice] ntp master- is it necessary
Dear All, Regarding the same subject, I tried to sync a gateway with its internal clock using ntp master only. The clock was synched but not as what's displayed on the IP phones at that site. I realized also that the stratum was higher than 10. My configuration was as follows: clock timezone EST -5clock summer-time EDT recurringntp master I don't know if there's a configuration missing here or not. Regard,Ramy From: michael.se...@compucom.com To: daqui...@cisco.com Date: Sun, 5 Aug 2012 13:32:39 -0400 CC: ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Thanks Dan. I'm not trying to make it work yes it works fine without the command, but instead I'm trying to replicate what Cisco might be looking for on the lab. Frankly I don't know what they are looking for in these types of scenarios but don't want to take the chance of losing points because they think the command should be there. Just cause it works doesn't mean you will get the points. Michael Sears -Original Message- From: Dan Quinlan (daquinla) [mailto:daqui...@cisco.com] Sent: Sunday, August 05, 2012 11:27 AM To: Sears, Michael (msears) Cc: ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Michael, all, You do NOT need the NTP master command on a router whenever that router is synchronizing with an external source, even if other devices are to synchronize with that router. Michael - in your config, you can remove the NTP master command and everything will synchronize with the HQ router just fine. Ntp master should really only be used when there is no external clock. DQ d...@cisco.com Sent from my iPhone On Aug 5, 2012, at 12:38 PM, michael.se...@compucom.com michael.se...@compucom.com wrote: The only situation in which I use the ntp master command is in a situation where for example HQ is providing clock for Servers and HQ clock is synchronizing with an external reliable source. In my lab I synchronize my PSTN with the Boulder Atomic Clock and synchronize my HQ router with the PSTN. HQ loopback provides clock for Servers, Switch, CUE and other branches. The following is what I use to accomplish this. Other than this scenario I do not use the ntp master command. ntp server 10.1.1.1 ntp source loopback0 ntp master Michael Sears -Original Message- From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of ccie_voice-requ...@onlinestudylist.com Sent: Sunday, August 05, 2012 10:00 AM To: ccie_voice@onlinestudylist.com Subject: CCIE_Voice Digest, Vol 78, Issue 14 Send CCIE_Voice mailing list submissions to ccie_voice@onlinestudylist.com To subscribe or unsubscribe via the World Wide Web, visit http://onlinestudylist.com/mailman/listinfo/ccie_voice or, via email, send a message with subject or body 'help' to ccie_voice-requ...@onlinestudylist.com You can reach the person managing the list at ccie_voice-ow...@onlinestudylist.com When replying, please edit your Subject line so it is more specific than Re: Contents of CCIE_Voice digest... Today's Topics: 1. Re: Switch QOS query (Justin McIntyre) 2. Re: ntp master- is it necessary (Bruno Nonogaki) 3. Re: Switch QOS query (Bruno Nonogaki) 4. Re: ntp master- is it necessary (Justin McIntyre) -- Message: 1 Date: Sun, 5 Aug 2012 09:10:00 -0400 From: Justin McIntyre justin.mcint...@blackbox.com To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] Switch QOS query Message-ID: 0aed4c84-05d7-4f60-b91f-eeca67495...@blackbox.com Content-Type: text/plain; charset=us-ascii So I believe your on the right track with your QOS config but there are a few things that need to be modified. 1. I see an issue with your requirements. Have the priority-queue enabled but then also give queue 1 30% bandwidth. If priority-queue out is enabled then this over-rides the bandwidth command for that queue. I know you had some other questions as well specifically about how to drop certain traffic if a queue were 80% full. My suggestion to you would be to review Vik Mahlis QOS blog on the IPEXPERT website. Go to blog.ipexpert.com and select the voice blog on the left. Then look for the QOS section. I think this will clear up most of your questions and get you on your way. Thanks, Justin McIntyre This email and any files transmitted with it are confidential and are intended for the sole use of the individual to whom they are addressed. Black Box Corporation reserves the right to scan all e-mail traffic for restricted content and to monitor all e-mail in general. If you are not the intended
Re: [OSL | CCIE_Voice] ntp master- is it necessary
ntp source is the one missing here ... From: Ramy Abdelrahim ramyoth...@hotmail.com To: michael.se...@compucom.com; daqui...@cisco.com Cc: ccie_voice@onlinestudylist.com Sent: Monday, August 13, 2012 5:04 PM Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Dear All, Regarding the same subject, I tried to sync a gateway with its internal clock using ntp master only. The clock was synched but not as what's displayed on the IP phones at that site. I realized also that the stratum was higher than 10. My configuration was as follows: clock timezone EST -5 clock summer-time EDT recurring ntp master I don't know if there's a configuration missing here or not. Regard, Ramy From: michael.se...@compucom.com To: daqui...@cisco.com Date: Sun, 5 Aug 2012 13:32:39 -0400 CC: ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Thanks Dan. I'm not trying to make it work yes it works fine without the command, but instead I'm trying to replicate what Cisco might be looking for on the lab. Frankly I don't know what they are looking for in these types of scenarios but don't want to take the chance of losing points because they think the command should be there. Just cause it works doesn't mean you will get the points. Michael Sears -Original Message- From: Dan Quinlan (daquinla) [mailto:daqui...@cisco.com] Sent: Sunday, August 05, 2012 11:27 AM To: Sears, Michael (msears) Cc: ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Michael, all, You do NOT need the NTP master command on a router whenever that router is synchronizing with an external source, even if other devices are to synchronize with that router. Michael - in your config, you can remove the NTP master command and everything will synchronize with the HQ router just fine. Ntp master should really only be used when there is no external clock. DQ d...@cisco.com Sent from my iPhone On Aug 5, 2012, at 12:38 PM, michael.se...@compucom.com michael.se...@compucom.com wrote: The only situation in which I use the ntp master command is in a situation where for example HQ is providing clock for Servers and HQ clock is synchronizing with an external reliable source. In my lab I synchronize my PSTN with the Boulder Atomic Clock and synchronize my HQ router with the PSTN. HQ loopback provides clock for Servers, Switch, CUE and other branches. The following is what I use to accomplish this. Other than this scenario I do not use the ntp master command. ntp server 10.1.1.1 ntp source loopback0 ntp master Michael Sears -Original Message- From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of ccie_voice-requ...@onlinestudylist.com Sent: Sunday, August 05, 2012 10:00 AM To: ccie_voice@onlinestudylist.com Subject: CCIE_Voice Digest, Vol 78, Issue 14 Send CCIE_Voice mailing list submissions to ccie_voice@onlinestudylist.com To subscribe or unsubscribe via the World Wide Web, visit http://onlinestudylist.com/mailman/listinfo/ccie_voice or, via email, send a message with subject or body 'help' to ccie_voice-requ...@onlinestudylist.com You can reach the person managing the list at ccie_voice-ow...@onlinestudylist.com When replying, please edit your Subject line so it is more specific than Re: Contents of CCIE_Voice digest... Today's Topics: 1. Re: Switch QOS query (Justin McIntyre) 2. Re: ntp master- is it necessary (Bruno Nonogaki) 3. Re: Switch QOS query (Bruno Nonogaki) 4. Re: ntp master- is it necessary (Justin McIntyre) -- Message: 1 Date: Sun, 5 Aug 2012 09:10:00 -0400 From: Justin McIntyre justin.mcint...@blackbox.com To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] Switch QOS query Message-ID: 0aed4c84-05d7-4f60-b91f-eeca67495...@blackbox.com Content-Type: text/plain; charset=us-ascii So I believe your on the right track with your QOS config but there are a few things that need to be modified. 1. I see an issue with your requirements. Have the priority-queue enabled but then also give queue 1 30% bandwidth. If priority-queue out is enabled then this over-rides the bandwidth command for that queue. I know you had some other questions as well specifically about how to drop certain traffic if a queue were 80% full. My suggestion to you would be to review Vik Mahlis QOS blog on the IPEXPERT website. Go to blog.ipexpert.com and select the voice blog on the left. Then look for the QOS section. I think this will clear up most of your questions and get you on your way. Thanks, Justin McIntyre
Re: [OSL | CCIE_Voice] ntp master- is it necessary
You don't need the ntp master or the ntp source commands. Just the two clock commands that you have, the time-zone command under telephony service, and make sure you set the type command under the ephone (eg type 7965). Do a create cnf under telephony service and restart or reset the ephones. DQ d...@cisco.commailto:d...@cisco.com Sent from my iPhone On Aug 13, 2012, at 6:04 PM, Ramy Abdelrahim ramyoth...@hotmail.commailto:ramyoth...@hotmail.com wrote: Dear All, Regarding the same subject, I tried to sync a gateway with its internal clock using ntp master only. The clock was synched but not as what's displayed on the IP phones at that site. I realized also that the stratum was higher than 10. My configuration was as follows: clock timezone EST -5 clock summer-time EDT recurring ntp master I don't know if there's a configuration missing here or not. Regard, Ramy From: michael.se...@compucom.commailto:michael.se...@compucom.com To: daqui...@cisco.commailto:daqui...@cisco.com Date: Sun, 5 Aug 2012 13:32:39 -0400 CC: ccie_voice@onlinestudylist.commailto:ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Thanks Dan. I'm not trying to make it work yes it works fine without the command, but instead I'm trying to replicate what Cisco might be looking for on the lab. Frankly I don't know what they are looking for in these types of scenarios but don't want to take the chance of losing points because they think the command should be there. Just cause it works doesn't mean you will get the points. Michael Sears -Original Message- From: Dan Quinlan (daquinla) [mailto:daqui...@cisco.com] Sent: Sunday, August 05, 2012 11:27 AM To: Sears, Michael (msears) Cc: ccie_voice@onlinestudylist.commailto:ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Michael, all, You do NOT need the NTP master command on a router whenever that router is synchronizing with an external source, even if other devices are to synchronize with that router. Michael - in your config, you can remove the NTP master command and everything will synchronize with the HQ router just fine. Ntp master should really only be used when there is no external clock. DQ d...@cisco.commailto:d...@cisco.com ! gt; Sent from my iPhone On Aug 5, 2012, at 12:38 PM, michael.se...@compucom.commailto:michael.se...@compucom.com michael.se...@compucom.commailto:michael.se...@compucom.com wrote: The only situation in which I use the ntp master command is in a situation where for example HQ is providing clock for Servers and HQ clock is synchronizing with an external reliable source. In my lab I synchronize my PSTN with the Boulder Atomic Clock and synchronize my HQ router with the PSTN. HQ loopback provides clock for Servers, Switch, CUE and other branches. The following is what I use to accomplish this. Other than this scenario I do not use the ntp master command. ntp server 10.1.1.1 ntp source loopback0 ntp master Michael Sears -Original Message- From: ccie_voice-boun...@onlinestudylist.commailto:ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of ccie_voice-requ...@onlinestudylist.commailto:ccie_voice-requ...@onlinestudylist.com Sent: Sunday, August 05, 2012 10:00 AM To: ccie_voice@onlinestudylist.commailto:ccie_voice@onlinestudylist.com Subject: CCIE_Voice Digest, Vol 78, Issue 14 Send CCIE_Voice mailing list submissions to ccie_voice@onlinestudylist.commailto:ccie_voice@onlinestudylist.com To subscribe or unsubscribe via the World Wide Web, visit http://onlinestudylist.com/mailman/listinfo/ccie_voice or, via email, send a message with subject or body 'help' to ccie_voice-requ...@onlinestudylist.commailto:ccie_voice-requ...@onlinestudylist.com You can reach the person managing the list at ccie_voice-ow...@onlinestudylist.commailto:ccie_voice-ow...@onlinestudylist.com When replying, please edit your Subject line so it is more specific than Re: Contents of CCIE_Voice digest... Today's Topics: 1. Re: Switch QOS query (Justin McIntyre) ! 2.. Re: ntp master- is it necessary (Bruno Nonogaki) 3. Re: Switch QOS query (Bruno Nonogaki) 4. Re: ntp master- is it necessary (Justin McIntyre) -- Message: 1 Date: Sun, 5 Aug 2012 09:10:00 -0400 From: Justin McIntyre justin.mcint...@blackbox.commailto:justin.mcint...@blackbox.com To: ccie_voice@onlinestudylist.commailto:ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.commailto:ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] Switch QOS query Message-ID: 0aed4c84-05d7-4f60-b91f-eeca67495...@blackbox.commailto:0aed4c84-05d7-4f60-b91f-eeca67495...@blackbox.com Content-Type: text/plain; charset=us-ascii So I
Re: [OSL | CCIE_Voice] ntp master- is it necessary
I think in your scenario you're assuming that this is a CME site. Actually, this site is a UCM remote site not CME. So, in this case do you think the 2 clock commands are sufficient? Regards,Ramy From: daqui...@cisco.com To: ramyoth...@hotmail.com CC: michael.se...@compucom.com; ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Date: Mon, 13 Aug 2012 23:51:17 + You don't need the ntp master or the ntp source commands. Just the two clock commands that you have, the time-zone command under telephony service, and make sure you set the type command under the ephone (eg type 7965). Do a create cnf under telephony service and restart or reset the ephones. DQ d...@cisco.com Sent from my iPhone On Aug 13, 2012, at 6:04 PM, Ramy Abdelrahim ramyoth...@hotmail.com wrote: Dear All, Regarding the same subject, I tried to sync a gateway with its internal clock using ntp master only. The clock was synched but not as what's displayed on the IP phones at that site. I realized also that the stratum was higher than 10. My configuration was as follows: clock timezone EST -5 clock summer-time EDT recurring ntp master I don't know if there's a configuration missing here or not. Regard, Ramy From: michael.se...@compucom.com To: daqui...@cisco.com Date: Sun, 5 Aug 2012 13:32:39 -0400 CC: ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Thanks Dan. I'm not trying to make it work yes it works fine without the command, but instead I'm trying to replicate what Cisco might be looking for on the lab. Frankly I don't know what they are looking for in these types of scenarios but don't want to take the chance of losing points because they think the command should be there. Just cause it works doesn't mean you will get the points. Michael Sears -Original Message- From: Dan Quinlan (daquinla) [mailto:daqui...@cisco.com] Sent: Sunday, August 05, 2012 11:27 AM To: Sears, Michael (msears) Cc: ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Michael, all, You do NOT need the NTP master command on a router whenever that router is synchronizing with an external source, even if other devices are to synchronize with that router. Michael - in your config, you can remove the NTP master command and everything will synchronize with the HQ router just fine. Ntp master should really only be used when there is no external clock. DQ d...@cisco.com ! gt; Sent from my iPhone On Aug 5, 2012, at 12:38 PM, michael.se...@compucom.com michael.se...@compucom.com wrote: The only situation in which I use the ntp master command is in a situation where for example HQ is providing clock for Servers and HQ clock is synchronizing with an external reliable source. In my lab I synchronize my PSTN with the Boulder Atomic Clock and synchronize my HQ router with the PSTN. HQ loopback provides clock for Servers, Switch, CUE and other branches. The following is what I use to accomplish this. Other than this scenario I do not use the ntp master command. ntp server 10.1.1.1 ntp source loopback0 ntp master Michael Sears -Original Message- From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of ccie_voice-requ...@onlinestudylist.com Sent: Sunday, August 05, 2012 10:00 AM To: ccie_voice@onlinestudylist.com Subject: CCIE_Voice Digest, Vol 78, Issue 14 Send CCIE_Voice mailing list submissions to ccie_voice@onlinestudylist.com To subscribe or unsubscribe via the World Wide Web, visit http://onlinestudylist.com/mailman/listinfo/ccie_voice or, via email, send a message with subject or body 'help' to ccie_voice-requ...@onlinestudylist.com You can reach the person managing the list at ccie_voice-ow...@onlinestudylist.com When replying, please edit your Subject line so it is more specific than Re: Contents of CCIE_Voice digest... Today's Topics: 1. Re: Switch QOS query (Justin McIntyre) ! 2.. Re: ntp master- is it necessary (Bruno Nonogaki) 3. Re: Switch QOS query (Bruno Nonogaki) 4. Re: ntp master- is it necessary (Justin McIntyre) -- Message: 1 Date: Sun, 5 Aug 2012 09:10:00 -0400 From: Justin McIntyre justin.mcint...@blackbox.com To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] Switch QOS query Message-ID: 0aed4c84-05d7-4f60-b91f-eeca67495...@blackbox.com Content-Type: text/plain; charset=us-ascii So I believe your on the right track with your QOS config but there are a few things that need to be modified. 1. I see an issue with your
Re: [OSL | CCIE_Voice] ntp master- is it necessary
If it is UCM, then the time on the router is only relevant to the phones when in SRST. When registered to the UCM, the phones are getting their time information from the UCM, specifically the date time group configured on the device pool that contains those phones. DQ d...@cisco.commailto:d...@cisco.com Sent from my iPhone On Aug 13, 2012, at 8:26 PM, Ramy Abdelrahim ramyoth...@hotmail.commailto:ramyoth...@hotmail.com wrote: I think in your scenario you're assuming that this is a CME site. Actually, this site is a UCM remote site not CME. So, in this case do you think the 2 clock commands are sufficient? Regards, Ramy From: daqui...@cisco.commailto:daqui...@cisco.com To: ramyoth...@hotmail.commailto:ramyoth...@hotmail.com CC: michael.se...@compucom.commailto:michael.se...@compucom.com; ccie_voice@onlinestudylist.commailto:ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Date: Mon, 13 Aug 2012 23:51:17 + You don't need the ntp master or the ntp source commands. Just the two clock commands that you have, the time-zone command under telephony service, and make sure you set the type command under the ephone (eg type 7965). Do a create cnf under telephony service and restart or reset the ephones. DQ d...@cisco.commailto:d...@cisco.com Sent from my iPhone On Aug 13, 2012, at 6:04 PM, Ramy Abdelrahim ramyoth...@hotmail.commailto:ramyoth...@hotmail.com wrote: Dear All, Regarding the same subject, I tried to sync a gateway with its internal clock using ntp master only. The clock was synched but not as what's displayed on the IP phones at that site. I realized also that the stratum was higher than 10. My configuration was as follows: clock timezone EST -5 clock summer-time EDT recurring ntp master I don't know if there's a configuration missing here or not. Regard, Ramy From: michael.se...@compucom.commailto:michael.se...@compucom.com To: daqui...@cisco.commailto:daqui...@cisco.com Date: Sun, 5 Aug 2012 13:32:39 -0400 CC: ccie_voice@onlinestudylist.commailto:ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Thanks Dan. I'm not trying to make it work yes it works fine without the command, but instead I'm trying to replicate what Cisco might be looking for on the lab. Frankly I don't know what they are looking for in these types of scenarios but don't want to take the chance of losing points because they think the command should be there. Just cause it works doesn't mean you will get the points. Michael Sears -Original Message- From: Dan Quinlan (daquinla) [mailto:daqui...@cisco.com] Sent: Sunday, August 05, 2012 11:27 AM To: Sears, Michael (msears) Cc: ccie_voice@onlinestudylist.commailto:ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Michael, all, You do NOT need the NTP master command on a router whenever that router is synchronizing with an external source, even if other devices are to synchronize with that router. Michael - in your config, you can remove the NTP master command and everything will synchronize with the HQ router just fine. Ntp master should really only be used when there is no external clock. DQ d...@cisco.commailto:d...@cisco.com ! gt; Sent from my iPhone On Aug 5, 2012, at 12:38 PM, michael.se...@compucom.commailto:michael.se...@compucom.com michael.se...@compucom.commailto:michael.se...@compucom.com wrote: The only situation in which I use the ntp master command is in a situation where for example HQ is providing clock for Servers and HQ clock is synchronizing with an external reliable source. In my lab I synchronize my PSTN with the Boulder Atomic Clock and synchronize my HQ router with the PSTN. HQ loopback provides clock for Servers, Switch, CUE and other branches. The following is what I use to accomplish this. Other than this scenario I do not use the ntp master command. ntp server 10.1.1.1 ntp source loopback0 ntp master Michael Sears -Original Message- From: ccie_voice-boun...@onlinestudylist.commailto:ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of ccie_voice-requ...@onlinestudylist.commailto:ccie_voice-requ...@onlinestudylist.com Sent: Sunday, August 05, 2012 10:00 AM To: ccie_voice@onlinestudylist.commailto:ccie_voice@onlinestudylist.com Subject: CCIE_Voice Digest, Vol 78, Issue 14 Send CCIE_Voice mailing list submissions to ccie_voice@onlinestudylist.commailto:ccie_voice@onlinestudylist.com To subscribe or unsubscribe via the World Wide Web, visit http://onlinestudylist.com/mailman/listinfo/ccie_voice or, via email, send a message with subject or body 'help' to ccie_voice-requ...@onlinestudylist.commailto:ccie_voice-requ...@onlinestudylist.com You can reach the person managing the list at ccie_voice
Re: [OSL | CCIE_Voice] ntp master- is it necessary
Michael, Dan is spot on Take a look at this older thread which Vik give a good explanation. http://www.onlinestudylist.com/archives/ccie_voice/2011-June/075080.html Just as Dan has stated DO NOT use the ntp master command if you are sychronized with an external ntp server (i.e. if you configure ntp server X.X.X.X within the router dont configure ntp master). In my studies with ipexpert and cisco 360 in all their solutions they never use ntp master if they sync the router to an external source. Jason - Original Message - From: michael.se...@compucom.com Sent: 08/05/12 12:32 PM To: daqui...@cisco.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Thanks Dan. I'm not trying to make it work yes it works fine without the command, but instead I'm trying to replicate what Cisco might be looking for on the lab. Frankly I don't know what they are looking for in these types of scenarios but don't want to take the chance of losing points because they think the command should be there. Just cause it works doesn't mean you will get the points. Michael Sears -Original Message- From: Dan Quinlan (daquinla) [mailto:daqui...@cisco.com] Sent: Sunday, August 05, 2012 11:27 AM To: Sears, Michael (msears) Cc: ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Michael, all, You do NOT need the NTP master command on a router whenever that router is synchronizing with an external source, even if other devices are to synchronize with that router. Michael - in your config, you can remove the NTP master command and everything will synchronize with the HQ router just fine. Ntp master should really only be used when there is no external clock. DQ d...@cisco.com Sent from my iPhone On Aug 5, 2012, at 12:38 PM, michael.se...@compucom.com michael.se...@compucom.com wrote: The only situation in which I use the ntp master command is in a situation where for example HQ is providing clock for Servers and HQ clock is synchronizing with an external reliable source. In my lab I synchronize my PSTN with the Boulder Atomic Clock and synchronize my HQ router with the PSTN. HQ loopback provides clock for Servers, Switch, CUE and other branches. The following is what I use to accomplish this. Other than this scenario I do not use the ntp master command. ntp server 10.1.1.1 ntp source loopback0 ntp master Michael Sears-Original Message- From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of ccie_voice-requ...@onlinestudylist.com Sent: Sunday, August 05, 2012 10:00 AM To: ccie_voice@onlinestudylist.com Subject: CCIE_Voice Digest, Vol 78, Issue 14 Send CCIE_Voice mailing list submissions to ccie_voice@onlinestudylist.com To subscribe or unsubscribe via the World Wide Web, visit http://onlinestudylist.com/mailman/listinfo/ccie_voice or, via email, send a message with subject or body 'help' to ccie_voice-requ...@onlinestudylist.com You can reach the person managing the list at ccie_voice-ow...@onlinestudylist.com When replying, please edit your Subject line so it is more specific than Re: Contents of CCIE_Voice digest...Today's Topics: 1. Re: Switch QOS query (Justin McIntyre) 2. Re: ntp master- is it necessary (Bruno Nonogaki) 3. Re: Switch QOS query (Bruno Nonogaki) 4. Re: ntp master- is it necessary (Justin McIntyre) -- Message: 1 Date: Sun, 5 Aug 2012 09:10:00 -0400 From: Justin McIntyre justin.mcint...@blackbox.com To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] Switch QOS query Message-ID: 0aed4c84-05d7-4f60-b91f-eeca67495...@blackbox.com Content-Type: text/plain; charset=us-ascii So I believe your on the right track with your QOS config but there are a few things that need to be modified. 1. I see an issue with your requirements. Have the priority-queue enabled but then also give queue 1 30% bandwidth. If priority-queue out is enabled then this over-rides the bandwidth command for that queue. I know you had some other questions as well specifically about how to drop certain traffic if a queue were 80% full. My suggestion to you would be to review Vik Mahlis QOS blog on the IPEXPERT website. Go to blog.ipexpert.com and select the voice blog on the left. Then look for the QOS section. I think this will clear up most of your questions and get you on your way. Thanks, Justin McIntyre This email and any files transmitted with it are confidential and are intended for the sole use of the individual to whom they are addressed. Black Box Corporation reserves the right to scan all e-mail traffic for restricted content and to monitor all e-mail in general. If you are not the intended recipient or you have received this email in error, any use, dissemination or forwarding
Re: [OSL | CCIE_Voice] ntp master- is it necessary
Hello Krishna, Yes, you are right. ntp master is not required. If you do ntp master, it may synchronize with its internal clock. It is a big mistake a lot of people do, including me before the OWLE Bootcamp, which I really recommend. Regards, Bruno On Sun, Aug 5, 2012 at 2:37 AM, Krishna vinayak_...@yahoo.com wrote: hi folks, i see some guys posts on ntp master command on the hq router ... i was wondering why one would be needing ntp master command when it is already being synchronized with external ntp server ntp master will infact mess up the time if not configured correctly since ntp master takes the stratum from the hardware(device) and be careful when putting the command ntp master .. if it is required then it is advised to keep the stratum number high compared to the extrenal ntp server... please correct me guys if i m wrong precisely, i felt that ntp master command is not required if that device is synchronized with external ntp server.. any comments on my advice is much appreciated... thank you krishna. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp master- is it necessary
I believe you are correct Krishna. My thoughts on it are this. I think the NTP MASTER command is needed else it would not be part of the CLI. However, we must truly understand what the command does before we can decide if it is to be used or not. If a router is configured to sync to an external time source then if NTP master is used the stratum that is configured must be accounted for. At some point down the chain of NTP syncs the stratum will eventually reach a number high enough that the device on the end of the chain will prefer its internal clock as the stratum is better. So if the router is not synchronized to an external source but must act as a NTP source then this is when we want to use the NTP master command. Every situation/requirement is different and we need to ultimately understand the NTP Master command as to whether or not we need to use the command or not. Thanks, Justin McIntyre This email and any files transmitted with it are confidential and are intended for the sole use of the individual to whom they are addressed. Black Box Corporation reserves the right to scan all e-mail traffic for restricted content and to monitor all e-mail in general. If you are not the intended recipient or you have received this email in error, any use, dissemination or forwarding of this email is strictly prohibited. If you have received this email in error, please notify the sender by replying to this email. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp master- is it necessary
The only situation in which I use the ntp master command is in a situation where for example HQ is providing clock for Servers and HQ clock is synchronizing with an external reliable source. In my lab I synchronize my PSTN with the Boulder Atomic Clock and synchronize my HQ router with the PSTN. HQ loopback provides clock for Servers, Switch, CUE and other branches. The following is what I use to accomplish this. Other than this scenario I do not use the ntp master command. ntp server 10.1.1.1 ntp source loopback0 ntp master Michael Sears -Original Message- From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of ccie_voice-requ...@onlinestudylist.com Sent: Sunday, August 05, 2012 10:00 AM To: ccie_voice@onlinestudylist.com Subject: CCIE_Voice Digest, Vol 78, Issue 14 Send CCIE_Voice mailing list submissions to ccie_voice@onlinestudylist.com To subscribe or unsubscribe via the World Wide Web, visit http://onlinestudylist.com/mailman/listinfo/ccie_voice or, via email, send a message with subject or body 'help' to ccie_voice-requ...@onlinestudylist.com You can reach the person managing the list at ccie_voice-ow...@onlinestudylist.com When replying, please edit your Subject line so it is more specific than Re: Contents of CCIE_Voice digest... Today's Topics: 1. Re: Switch QOS query (Justin McIntyre) 2. Re: ntp master- is it necessary (Bruno Nonogaki) 3. Re: Switch QOS query (Bruno Nonogaki) 4. Re: ntp master- is it necessary (Justin McIntyre) -- Message: 1 Date: Sun, 5 Aug 2012 09:10:00 -0400 From: Justin McIntyre justin.mcint...@blackbox.com To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] Switch QOS query Message-ID: 0aed4c84-05d7-4f60-b91f-eeca67495...@blackbox.com Content-Type: text/plain; charset=us-ascii So I believe your on the right track with your QOS config but there are a few things that need to be modified. 1. I see an issue with your requirements. Have the priority-queue enabled but then also give queue 1 30% bandwidth. If priority-queue out is enabled then this over-rides the bandwidth command for that queue. I know you had some other questions as well specifically about how to drop certain traffic if a queue were 80% full. My suggestion to you would be to review Vik Mahlis QOS blog on the IPEXPERT website. Go to blog.ipexpert.com and select the voice blog on the left. Then look for the QOS section. I think this will clear up most of your questions and get you on your way. Thanks, Justin McIntyre This email and any files transmitted with it are confidential and are intended for the sole use of the individual to whom they are addressed. Black Box Corporation reserves the right to scan all e-mail traffic for restricted content and to monitor all e-mail in general. If you are not the intended recipient or you have received this email in error, any use, dissemination or forwarding of this email is strictly prohibited. If you have received this email in error, please notify the sender by replying to this email. -- Message: 2 Date: Sun, 5 Aug 2012 10:14:44 -0300 From: Bruno Nonogaki brun...@gmail.com To: Krishna vinayak_...@yahoo.com Cc: Online Study ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Message-ID: CAP_RLdVVgHfN=fGytf6w7K5n5-nS6g3JnRiZfM5=tgsxozp...@mail.gmail.com Content-Type: text/plain; charset=iso-8859-1 Hello Krishna, Yes, you are right. ntp master is not required. If you do ntp master, it may synchronize with its internal clock. It is a big mistake a lot of people do, including me before the OWLE Bootcamp, which I really recommend. Regards, Bruno On Sun, Aug 5, 2012 at 2:37 AM, Krishna vinayak_...@yahoo.com wrote: hi folks, i see some guys posts on ntp master command on the hq router ... i was wondering why one would be needing ntp master command when it is already being synchronized with external ntp server ntp master will infact mess up the time if not configured correctly since ntp master takes the stratum from the hardware(device) and be careful when putting the command ntp master .. if it is required then it is advised to keep the stratum number high compared to the extrenal ntp server... please correct me guys if i m wrong precisely, i felt that ntp master command is not required if that device is synchronized with external ntp server.. any comments on my advice is much appreciated... thank you krishna. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com -- next part -- An HTML
Re: [OSL | CCIE_Voice] ntp master- is it necessary
Michael, all, You do NOT need the NTP master command on a router whenever that router is synchronizing with an external source, even if other devices are to synchronize with that router. Michael - in your config, you can remove the NTP master command and everything will synchronize with the HQ router just fine. Ntp master should really only be used when there is no external clock. DQ d...@cisco.com Sent from my iPhone On Aug 5, 2012, at 12:38 PM, michael.se...@compucom.com michael.se...@compucom.com wrote: The only situation in which I use the ntp master command is in a situation where for example HQ is providing clock for Servers and HQ clock is synchronizing with an external reliable source. In my lab I synchronize my PSTN with the Boulder Atomic Clock and synchronize my HQ router with the PSTN. HQ loopback provides clock for Servers, Switch, CUE and other branches. The following is what I use to accomplish this. Other than this scenario I do not use the ntp master command. ntp server 10.1.1.1 ntp source loopback0 ntp master Michael Sears -Original Message- From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of ccie_voice-requ...@onlinestudylist.com Sent: Sunday, August 05, 2012 10:00 AM To: ccie_voice@onlinestudylist.com Subject: CCIE_Voice Digest, Vol 78, Issue 14 Send CCIE_Voice mailing list submissions to ccie_voice@onlinestudylist.com To subscribe or unsubscribe via the World Wide Web, visit http://onlinestudylist.com/mailman/listinfo/ccie_voice or, via email, send a message with subject or body 'help' to ccie_voice-requ...@onlinestudylist.com You can reach the person managing the list at ccie_voice-ow...@onlinestudylist.com When replying, please edit your Subject line so it is more specific than Re: Contents of CCIE_Voice digest... Today's Topics: 1. Re: Switch QOS query (Justin McIntyre) 2. Re: ntp master- is it necessary (Bruno Nonogaki) 3. Re: Switch QOS query (Bruno Nonogaki) 4. Re: ntp master- is it necessary (Justin McIntyre) -- Message: 1 Date: Sun, 5 Aug 2012 09:10:00 -0400 From: Justin McIntyre justin.mcint...@blackbox.com To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] Switch QOS query Message-ID: 0aed4c84-05d7-4f60-b91f-eeca67495...@blackbox.com Content-Type: text/plain; charset=us-ascii So I believe your on the right track with your QOS config but there are a few things that need to be modified. 1. I see an issue with your requirements. Have the priority-queue enabled but then also give queue 1 30% bandwidth. If priority-queue out is enabled then this over-rides the bandwidth command for that queue. I know you had some other questions as well specifically about how to drop certain traffic if a queue were 80% full. My suggestion to you would be to review Vik Mahlis QOS blog on the IPEXPERT website. Go to blog.ipexpert.com and select the voice blog on the left. Then look for the QOS section. I think this will clear up most of your questions and get you on your way. Thanks, Justin McIntyre This email and any files transmitted with it are confidential and are intended for the sole use of the individual to whom they are addressed. Black Box Corporation reserves the right to scan all e-mail traffic for restricted content and to monitor all e-mail in general. If you are not the intended recipient or you have received this email in error, any use, dissemination or forwarding of this email is strictly prohibited. If you have received this email in error, please notify the sender by replying to this email. -- Message: 2 Date: Sun, 5 Aug 2012 10:14:44 -0300 From: Bruno Nonogaki brun...@gmail.com To: Krishna vinayak_...@yahoo.com Cc: Online Study ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Message-ID: CAP_RLdVVgHfN=fGytf6w7K5n5-nS6g3JnRiZfM5=tgsxozp...@mail.gmail.com Content-Type: text/plain; charset=iso-8859-1 Hello Krishna, Yes, you are right. ntp master is not required. If you do ntp master, it may synchronize with its internal clock. It is a big mistake a lot of people do, including me before the OWLE Bootcamp, which I really recommend. Regards, Bruno On Sun, Aug 5, 2012 at 2:37 AM, Krishna vinayak_...@yahoo.com wrote: hi folks, i see some guys posts on ntp master command on the hq router ... i was wondering why one would be needing ntp master command when it is already being synchronized with external ntp server ntp master will infact mess up the time if not configured correctly since ntp master takes the stratum from the hardware(device) and be careful when putting the command ntp master .. if it is required
Re: [OSL | CCIE_Voice] ntp master- is it necessary
Thanks Dan. I'm not trying to make it work yes it works fine without the command, but instead I'm trying to replicate what Cisco might be looking for on the lab. Frankly I don't know what they are looking for in these types of scenarios but don't want to take the chance of losing points because they think the command should be there. Just cause it works doesn't mean you will get the points. Michael Sears -Original Message- From: Dan Quinlan (daquinla) [mailto:daqui...@cisco.com] Sent: Sunday, August 05, 2012 11:27 AM To: Sears, Michael (msears) Cc: ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Michael, all, You do NOT need the NTP master command on a router whenever that router is synchronizing with an external source, even if other devices are to synchronize with that router. Michael - in your config, you can remove the NTP master command and everything will synchronize with the HQ router just fine. Ntp master should really only be used when there is no external clock. DQ d...@cisco.com Sent from my iPhone On Aug 5, 2012, at 12:38 PM, michael.se...@compucom.com michael.se...@compucom.com wrote: The only situation in which I use the ntp master command is in a situation where for example HQ is providing clock for Servers and HQ clock is synchronizing with an external reliable source. In my lab I synchronize my PSTN with the Boulder Atomic Clock and synchronize my HQ router with the PSTN. HQ loopback provides clock for Servers, Switch, CUE and other branches. The following is what I use to accomplish this. Other than this scenario I do not use the ntp master command. ntp server 10.1.1.1 ntp source loopback0 ntp master Michael Sears -Original Message- From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of ccie_voice-requ...@onlinestudylist.com Sent: Sunday, August 05, 2012 10:00 AM To: ccie_voice@onlinestudylist.com Subject: CCIE_Voice Digest, Vol 78, Issue 14 Send CCIE_Voice mailing list submissions to ccie_voice@onlinestudylist.com To subscribe or unsubscribe via the World Wide Web, visit http://onlinestudylist.com/mailman/listinfo/ccie_voice or, via email, send a message with subject or body 'help' to ccie_voice-requ...@onlinestudylist.com You can reach the person managing the list at ccie_voice-ow...@onlinestudylist.com When replying, please edit your Subject line so it is more specific than Re: Contents of CCIE_Voice digest... Today's Topics: 1. Re: Switch QOS query (Justin McIntyre) 2. Re: ntp master- is it necessary (Bruno Nonogaki) 3. Re: Switch QOS query (Bruno Nonogaki) 4. Re: ntp master- is it necessary (Justin McIntyre) -- Message: 1 Date: Sun, 5 Aug 2012 09:10:00 -0400 From: Justin McIntyre justin.mcint...@blackbox.com To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] Switch QOS query Message-ID: 0aed4c84-05d7-4f60-b91f-eeca67495...@blackbox.com Content-Type: text/plain; charset=us-ascii So I believe your on the right track with your QOS config but there are a few things that need to be modified. 1. I see an issue with your requirements. Have the priority-queue enabled but then also give queue 1 30% bandwidth. If priority-queue out is enabled then this over-rides the bandwidth command for that queue. I know you had some other questions as well specifically about how to drop certain traffic if a queue were 80% full. My suggestion to you would be to review Vik Mahlis QOS blog on the IPEXPERT website. Go to blog.ipexpert.com and select the voice blog on the left. Then look for the QOS section. I think this will clear up most of your questions and get you on your way. Thanks, Justin McIntyre This email and any files transmitted with it are confidential and are intended for the sole use of the individual to whom they are addressed. Black Box Corporation reserves the right to scan all e-mail traffic for restricted content and to monitor all e-mail in general. If you are not the intended recipient or you have received this email in error, any use, dissemination or forwarding of this email is strictly prohibited. If you have received this email in error, please notify the sender by replying to this email. -- Message: 2 Date: Sun, 5 Aug 2012 10:14:44 -0300 From: Bruno Nonogaki brun...@gmail.com To: Krishna vinayak_...@yahoo.com Cc: Online Study ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary Message-ID: CAP_RLdVVgHfN=fGytf6w7K5n5-nS6g3JnRiZfM5=tgsxozp...@mail.gmail.com Content-Type: text/plain; charset=iso-8859-1 Hello Krishna, Yes, you are right. ntp master is not required. If you do ntp master, it may
Re: [OSL | CCIE_Voice] ntp master- is it necessary
hi folks, i see some guys posts on ntp master command on the hq router ... i was wondering why one would be needing ntp master command when it is already being synchronized with external ntp server ntp master will infact mess up the time if not configured correctly since ntp master takes the stratum from the hardware(device) and be careful when putting the command ntp master .. if it is required then it is advised to keep the stratum number high compared to the extrenal ntp server... please correct me guys if i m wrong precisely, i felt that ntp master command is not required if that device is synchronized with external ntp server.. any comments on my advice is much appreciated... thank you krishna.___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] NTP Master Dilemma
Hi Experts I am due for my next Lab attempt in 5 days time. I so far have never been able to get marks for NTP section. So I ask this question to the forum that if someone has ever scored 100% in the Infra Section (without breaking the NDA of course) , can they lend some light on this innocuous looking command, ntp master. Here are some finding from my POD: [10.10.100.1 = PSTN RTR 10.10.110.1=HQ RTR] 1. With NTP Master Command R1: ntp source Loopback0 ntp master 10 ntp server 10.10.100.1 source Loopback0 ! clock timezone PST -8 clock summer-time PDT recurring R2: ntp server 10.10.110.1 Show commands: R1: HQ-R1#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 250.0008 Hz, precision is 2**24 reference time is D37C1C18.AAB00668 (23:37:12.666 PDT Thu Jun 7 2012) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.03145 s/s system poll interval is 64, last update was 384 sec ago. HQ-R1# HQ-R1# HQ-R1#sh ntp ass HQ-R1#sh ntp associations address ref clock st when poll reach delay offset disp x~127.127.1.1 .LOCL. 9 16 16 377 0.000 0.000 0.240 x~10.10.100.1.LOCL. 1 50 64 377 0.000 13194.1 3.293 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured R2: BR1-R2#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 249.9990 Hz, precision is 2**24 reference time is . (16:00:00.000 PST Wed Dec 31 1899) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.03885 s/s system poll interval is 64, never updated. BR1-R2# BR1-R2#sh ntp ass address ref clock st when poll reach delay offset disp ~10.10.110.173.78.73.84 16 55 64 300 0.000 1325166 944.35 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured CUCM: admin:utils ntp status ntpd (pid 6322) is running... remote refid st t when poll reach delay offset jitter == *127.127.1.0 LOCAL(0)10 l 63 64 3770.0000.000 0.001 10.10.110.1.INIT. 16 u 64 128 3701.897 -2.990 1087693 synchronised to local net at stratum 11 time correct to within 12 ms polling server every 512 s Current time in UTC is : Fri Jun 8 06:22:22 UTC 2012 Current time in America/Los_Angeles is : Thu Jun 7 23:22:22 PDT 2012 -- Scenario 2: Without NTP Master Command. -- R1: ntp source Loopback0 ntp server 10.10.100.1 source Loopback0 ! clock timezone PST -8 clock summer-time PDT recurring R2: BR1-R2#r | s ntp ntp server 10.10.110.1 Show Commands: HQ-R1#sh ntp status Clock is synchronized, stratum 2, reference is 10.10.100.1 nominal freq is 250. Hz, actual freq is 250.0008 Hz, precision is 2**24 reference time is D37C21AB.D80D6753 (00:00:59.843 PDT Fri Jun 8 2012) clock offset is -0.0078 msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.03182 s/s system poll interval is 64, last update was 264 sec ago. HQ-R1# HQ-R1#sh ntp ass address ref clock st when poll reach delay offset disp *~10.10.100.1.LOCL. 1 11 64 377 0.000 -7.866 2.813 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured HQ-R1#sh ntp ass d 10.10.100.1 configured, our_master, sane, valid, stratum 1 ref ID .LOCL., time D37C229E.73B36D17 (00:05:02.451 PDT Fri Jun 8 2012) our mode client, peer mode server, our poll intvl 64, peer poll intvl 64 root delay 0.00 msec, root disp 0.47, reach 377, sync dist 0.00 delay 0.00 msec, offset -7.8662 msec, dispersion 2.81 precision 2**24, version 4 org time D37C22AE.D47DF91B (00:05:18.830 PDT Fri Jun 8 2012) rec time D37C22AE.D7653258 (00:05:18.841 PDT Fri Jun 8 2012) xmt time D37C22AE.D6E2248F (00:05:18.839 PDT Fri Jun 8 2012) filtdelay = 0.000.000.000.000.000.000.000.00 filtoffset = -0.01 -0.00 -0.00 -0.00 -0.00 -0.00 -0.00 -0.00 filterror = 0.000.000.000.000.000.000.000.00 minpoll = 6, maxpoll = 10 BR1-R2#sh ntp s Clock is synchronized, stratum 3, reference is 10.10.110.1 nominal freq is 250. Hz, actual freq is 249.9990 Hz, precision is 2**24 reference time is D37C2310.A8751D42 (00:06:56.658 PDT Fri Jun 8 2012) clock offset is 0.0034 msec, root delay is 0.00 msec root dispersion
Re: [OSL | CCIE_Voice] NTP Master Dilemma
You don¹t want to use both an ³ntp master² (my clock is the master) and an ntp server (this is the ntp server I want to sync with) command together. Cisco IOS will respond to ntp requests if a) it is the ntp master (ntp master command) or b) it is synced to an ntp source (ntp server command). So, for example, let¹s say that you want to sync R1 to a backbone ntp server, and have R2 and R3 sync to R1. You would do: R1: ntp server backbone ntp server¹s ip address ! You¹re telling R1 to use ntp to sync to the backbone server ntp source interface name ! Optional - You¹re telling R1 to use a specific interface for sourcing all of its NTP traffic R2 R3: ntp server R1¹s ip address use the address of the interface you set in the ³ntp source² command on R1 if you set one In the above scenario, R1 will respond to ntp requests, R2 will respond to ntp requests, and R3 will respond to ntp requests. No need for an ³ntp master² command. Scenario 2: You want R1 to provide ntp to R2 and R3, but are not using another ntp server: R1: ntp master stratum number ! You¹re telling R1 to respond to NTP requests and say he¹s a certain stratum clock. ntp source interface name ! Optional - You¹re telling R1 to use a specific interface for sourcing all of its NTP traffic R2 R3: ntp server R1¹s ip address use the address of the interface you set in the ³ntp source² command on R1 if you set one HTH, DQ On 6/8/12 1:19 PM, Mann Chaddha mann.chad...@gmail.com wrote: Hi Experts I am due for my next Lab attempt in 5 days time. I so far have never been able to get marks for NTP section. So I ask this question to the forum that if someone has ever scored 100% in the Infra Section (without breaking the NDA of course) , can they lend some light on this innocuous looking command, ntp master. Here are some finding from my POD: [10.10.100.1 = PSTN RTR 10.10.110.1=HQ RTR] 1. With NTP Master Command R1: ntp source Loopback0 ntp master 10 ntp server 10.10.100.1 source Loopback0 ! clock timezone PST -8 clock summer-time PDT recurring R2: ntp server 10.10.110.1 Show commands: R1: HQ-R1#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 250.0008 Hz, precision is 2**24 reference time is D37C1C18.AAB00668 (23:37:12.666 PDT Thu Jun 7 2012) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.03145 s/s system poll interval is 64, last update was 384 sec ago. HQ-R1# HQ-R1# HQ-R1#sh ntp ass HQ-R1#sh ntp associations address ref clock st when poll reach delay offset disp x~127.127.1.1 .LOCL. 9 16 16 377 0.000 0.000 0.240 x~10.10.100.1 .LOCL. 1 50 64 377 0.000 13194.1 3.293 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured R2: BR1-R2#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 249.9990 Hz, precision is 2**24 reference time is . (16:00:00.000 PST Wed Dec 31 1899) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.03885 s/s system poll interval is 64, never updated. BR1-R2# BR1-R2#sh ntp ass address ref clock st when poll reach delay offset disp ~10.10.110.1 73.78.73.84 16 55 64 300 0.000 1325166 944.35 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured CUCM: admin:utils ntp status ntpd (pid 6322) is running... remote refid st t when poll reach delay offset jitter == *127.127.1.0 LOCAL(0) 10 l 63 64 377 0.000 0.000 0.001 10.10.110.1 .INIT. 16 u 64 128 370 1.897 -2.990 1087693 synchronised to local net at stratum 11 time correct to within 12 ms polling server every 512 s Current time in UTC is : Fri Jun 8 06:22:22 UTC 2012 Current time in America/Los_Angeles is : Thu Jun 7 23:22:22 PDT 2012 -- Scenario 2: Without NTP Master Command. -- R1: ntp source Loopback0 ntp server 10.10.100.1 source Loopback0 ! clock timezone PST -8 clock summer-time PDT recurring R2: BR1-R2#r | s ntp ntp server 10.10.110.1 Show Commands: HQ-R1#sh ntp status Clock is synchronized, stratum 2, reference is 10.10.100.1 nominal freq is 250. Hz, actual freq is 250.0008 Hz, precision is 2**24 reference time is D37C21AB.D80D6753 (00:00:59.843
Re: [OSL | CCIE_Voice] NTP Master Dilemma
I've never taken the lab. I can give you my opinion. I suspect Cisco may vary the Stratum of their NTP server on purpose by day/week, etc. Throwing students who think they know the answer off. So the answer would depend on what Stratum you getting. Generally I don't think you won't need the master command unless they are giving you a bad stratum =10 which CallManager won't like. Verify your hardware is close to current time via show clock. Show ntp association detail --is your master sane or insane, if not why? sc#show ntp assoc detail 172.10.64.254 configured, our_master, sane, valid, stratum 7 ref ID 172.100.64.10 , time D37CCC06.0A26BD47 (03:07:50.039 HKT Sat Jun 9 2012) our mode client, peer mode server, our poll intvl 64, peer poll intvl 64 root delay 0.00 msec, root disp 37.17, reach 377, sync dist 0.04 debug ntp to your buffer in background From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of Mann Chaddha Sent: Friday, June 08, 2012 1:19 PM To: ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] NTP Master Dilemma Hi Experts I am due for my next Lab attempt in 5 days time. I so far have never been able to get marks for NTP section. So I ask this question to the forum that if someone has ever scored 100% in the Infra Section (without breaking the NDA of course) , can they lend some light on this innocuous looking command, ntp master. Here are some finding from my POD: [10.10.100.1 = PSTN RTR 10.10.110.1=HQ RTR] 1. With NTP Master Command R1: ntp source Loopback0 ntp master 10 ntp server 10.10.100.1 source Loopback0 ! clock timezone PST -8 clock summer-time PDT recurring R2: ntp server 10.10.110.1 Show commands: R1: HQ-R1#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 250.0008 Hz, precision is 2**24 reference time is D37C1C18.AAB00668 (23:37:12.666 PDT Thu Jun 7 2012) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.03145 s/s system poll interval is 64, last update was 384 sec ago. HQ-R1# HQ-R1# HQ-R1#sh ntp ass HQ-R1#sh ntp associations address ref clock st when poll reach delay offset disp x~127.127.1.1 .LOCL. 9 16 16 377 0.000 0.000 0.240 x~10.10.100.1.LOCL. 1 50 64 377 0.000 13194.1 3.293 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured R2: BR1-R2#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 249.9990 Hz, precision is 2**24 reference time is . (16:00:00.000 PST Wed Dec 31 1899) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.03885 s/s system poll interval is 64, never updated. BR1-R2# BR1-R2#sh ntp ass address ref clock st when poll reach delay offset disp ~10.10.110.173.78.73.84 16 55 64 300 0.000 1325166 944.35 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured CUCM: admin:utils ntp status ntpd (pid 6322) is running... remote refid st t when poll reach delay offset jitter == *127.127.1.0 LOCAL(0)10 l 63 64 3770.0000.000 0.001 10.10.110.1.INIT. 16 u 64 128 3701.897 -2.990 1087693 synchronised to local net at stratum 11 time correct to within 12 ms polling server every 512 s Current time in UTC is : Fri Jun 8 06:22:22 UTC 2012 Current time in America/Los_Angeles is : Thu Jun 7 23:22:22 PDT 2012 -- Scenario 2: Without NTP Master Command. -- R1: ntp source Loopback0 ntp server 10.10.100.1 source Loopback0 ! clock timezone PST -8 clock summer-time PDT recurring R2: BR1-R2#r | s ntp ntp server 10.10.110.1 Show Commands: HQ-R1#sh ntp status Clock is synchronized, stratum 2, reference is 10.10.100.1 nominal freq is 250. Hz, actual freq is 250.0008 Hz, precision is 2**24 reference time is D37C21AB.D80D6753 (00:00:59.843 PDT Fri Jun 8 2012) clock offset is -0.0078 msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.03182 s/s system poll interval is 64, last update was 264 sec ago. HQ-R1# HQ-R1#sh ntp ass address ref clock st when poll reach delay offset disp *~10.10.100.1.LOCL. 1 11 64 377 0.000 -7.866 2.813 * sys.peer, # selected, + candidate
Re: [OSL | CCIE_Voice] NTP Master Dilemma
Do not use ntp master on any of your routers. The only command that is needed is the ntp server command. Even if you want one of your routers to be the NTP server you dont need the ntp master command. Jason - Original Message - From: Mann Chaddha Sent: 06/08/12 12:19 PM To: ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] NTP Master Dilemma Hi Experts I am due for my next Lab attempt in 5 days time. I so far have never been able to get marks for NTP section. So I ask this question to the forum that if someone has ever scored 100% in the Infra Section (without breaking the NDA of course) , can they lend some light on this innocuous looking command, ntp master. Here are some finding from my POD: [10.10.100.1 = PSTN RTR 10.10.110.1=HQ RTR] 1. With NTP Master Command R1: ntp source Loopback0 ntp master 10 ntp server 10.10.100.1 source Loopback0 ! clock timezone PST -8 clock summer-time PDT recurring R2: ntp server 10.10.110.1 Show commands: R1: HQ-R1#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 250.0008 Hz, precision is 2**24 reference time is D37C1C18.AAB00668 (23:37:12.666 PDT Thu Jun 7 2012) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.03145 s/s system poll interval is 64, last update was 384 sec ago. HQ-R1# HQ-R1# HQ-R1#sh ntp ass HQ-R1#sh ntp associations address ref clock st when poll reach delay offset disp x~127.127.1.1 .LOCL. 9 16 16 377 0.000 0.000 0.240 x~10.10.100.1 .LOCL. 1 50 64 377 0.000 13194.1 3.293 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured R2: BR1-R2#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 249.9990 Hz, precision is 2**24 reference time is . (16:00:00.000 PST Wed Dec 31 1899) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.03885 s/s system poll interval is 64, never updated. BR1-R2# BR1-R2#sh ntp ass address ref clock st when poll reach delay offset disp ~10.10.110.1 73.78.73.84 16 55 64 300 0.000 1325166 944.35 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured CUCM: admin:utils ntp status ntpd (pid 6322) is running... remote refid st t when poll reach delay offset jitter == *127.127.1.0 LOCAL(0) 10 l 63 64 377 0.000 0.000 0.001 10.10.110.1 .INIT. 16 u 64 128 370 1.897 -2.990 1087693 synchronised to local net at stratum 11 time correct to within 12 ms polling server every 512 s Current time in UTC is : Fri Jun 8 06:22:22 UTC 2012 Current time in America/Los_Angeles is : Thu Jun 7 23:22:22 PDT 2012 -- Scenario 2: Without NTP Master Command. -- R1: ntp source Loopback0 ntp server 10.10.100.1 source Loopback0 ! clock timezone PST -8 clock summer-time PDT recurring R2: BR1-R2#r | s ntp ntp server 10.10.110.1 Show Commands: HQ-R1#sh ntp status Clock is synchronized, stratum 2, reference is 10.10.100.1 nominal freq is 250. Hz, actual freq is 250.0008 Hz, precision is 2**24 reference time is D37C21AB.D80D6753 (00:00:59.843 PDT Fri Jun 8 2012) clock offset is -0.0078 msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.03182 s/s system poll interval is 64, last update was 264 sec ago. HQ-R1# HQ-R1#sh ntp ass address ref clock st when poll reach delay offset disp *~10.10.100.1 .LOCL. 1 11 64 377 0.000 -7.866 2.813 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured HQ-R1#sh ntp ass d 10.10.100.1 configured, our_master, sane, valid, stratum 1 ref ID .LOCL., time D37C229E.73B36D17 (00:05:02.451 PDT Fri Jun 8 2012) our mode client, peer mode server, our poll intvl 64, peer poll intvl 64 root delay 0.00 msec, root disp 0.47, reach 377, sync dist 0.00 delay 0.00 msec, offset -7.8662 msec, dispersion 2.81 precision 2**24, version 4 org time D37C22AE.D47DF91B (00:05:18.830 PDT Fri Jun 8 2012) rec time D37C22AE.D7653258 (00:05:18.841 PDT Fri Jun 8 2012) xmt time D37C22AE.D6E2248F (00:05:18.839 PDT Fri Jun 8 2012) filtdelay = 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 filtoffset = -0.01 -0.00 -0.00 -0.00 -0.00 -0.00 -0.00 -0.00 filterror = 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 minpoll = 6, maxpoll = 10 BR1-R2#sh ntp s Clock is synchronized, stratum 3, reference is 10.10.110.1 nominal freq is 250. Hz, actual freq
Re: [OSL | CCIE_Voice] NTP Master Dilemma
Based on my testing in the home lab, I suggest to not use 'ntp master' and ntp server at the same time. To sync to an external source, all you need is 'ntp server' command. Also, I could not find a cli command to setup ntp in CUCM, only way to do it is via GUI. Good luck!!! Hth, Tapan From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of Mann Chaddha Sent: Friday, June 08, 2012 12:19 PM To: ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] NTP Master Dilemma Hi Experts I am due for my next Lab attempt in 5 days time. I so far have never been able to get marks for NTP section. So I ask this question to the forum that if someone has ever scored 100% in the Infra Section (without breaking the NDA of course) , can they lend some light on this innocuous looking command, ntp master. Here are some finding from my POD: [10.10.100.1 = PSTN RTR 10.10.110.1=HQ RTR] 1. With NTP Master Command R1: ntp source Loopback0 ntp master 10 ntp server 10.10.100.1 source Loopback0 ! clock timezone PST -8 clock summer-time PDT recurring R2: ntp server 10.10.110.1 Show commands: R1: HQ-R1#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 250.0008 Hz, precision is 2**24 reference time is D37C1C18.AAB00668 (23:37:12.666 PDT Thu Jun 7 2012) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.03145 s/s system poll interval is 64, last update was 384 sec ago. HQ-R1# HQ-R1# HQ-R1#sh ntp ass HQ-R1#sh ntp associations address ref clock st when poll reach delay offset disp x~127.127.1.1 .LOCL. 9 16 16 377 0.000 0.000 0.240 x~10.10.100.1.LOCL. 1 50 64 377 0.000 13194.1 3.293 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured R2: BR1-R2#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 249.9990 Hz, precision is 2**24 reference time is . (16:00:00.000 PST Wed Dec 31 1899) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.03885 s/s system poll interval is 64, never updated. BR1-R2# BR1-R2#sh ntp ass address ref clock st when poll reach delay offset disp ~10.10.110.173.78.73.84 16 55 64 300 0.000 1325166 944.35 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured CUCM: admin:utils ntp status ntpd (pid 6322) is running... remote refid st t when poll reach delay offset jitter == *127.127.1.0 LOCAL(0)10 l 63 64 3770.0000.000 0.001 10.10.110.1.INIT. 16 u 64 128 3701.897 -2.990 1087693 synchronised to local net at stratum 11 time correct to within 12 ms polling server every 512 s Current time in UTC is : Fri Jun 8 06:22:22 UTC 2012 Current time in America/Los_Angeles is : Thu Jun 7 23:22:22 PDT 2012 -- Scenario 2: Without NTP Master Command. -- R1: ntp source Loopback0 ntp server 10.10.100.1 source Loopback0 ! clock timezone PST -8 clock summer-time PDT recurring R2: BR1-R2#r | s ntp ntp server 10.10.110.1 Show Commands: HQ-R1#sh ntp status Clock is synchronized, stratum 2, reference is 10.10.100.1 nominal freq is 250. Hz, actual freq is 250.0008 Hz, precision is 2**24 reference time is D37C21AB.D80D6753 (00:00:59.843 PDT Fri Jun 8 2012) clock offset is -0.0078 msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.03182 s/s system poll interval is 64, last update was 264 sec ago. HQ-R1# HQ-R1#sh ntp ass address ref clock st when poll reach delay offset disp *~10.10.100.1.LOCL. 1 11 64 377 0.000 -7.866 2.813 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured HQ-R1#sh ntp ass d 10.10.100.1 configured, our_master, sane, valid, stratum 1 ref ID .LOCL., time D37C229E.73B36D17 (00:05:02.451 PDT Fri Jun 8 2012) our mode client, peer mode server, our poll intvl 64, peer poll intvl 64 root delay 0.00 msec, root disp 0.47, reach 377, sync dist 0.00 delay 0.00 msec, offset -7.8662 msec, dispersion 2.81 precision 2**24, version 4 org time D37C22AE.D47DF91B (00:05:18.830 PDT Fri Jun 8 2012) rec time D37C22AE.D7653258 (00:05:18.841 PDT Fri Jun 8 2012) xmt time D37C22AE.D6E2248F (00:05:18.839 PDT Fri Jun 8 2012
Re: [OSL | CCIE_Voice] NTP Master Dilemm
Let us say they want the local router to be ntp server or back up Then y Bill On Jun 8, 2012, at 2:56 PM, Jason Murray murr...@usa.com wrote: Do not use ntp master on any of your routers. The only command that is needed is the ntp server command. Even if you want one of your routers to be the NTP server you dont need the ntp master command. Jason - Original Message - From: Mann Chaddha Sent: 06/08/12 12:19 PM To: ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] NTP Master Dilemma Hi Experts I am due for my next Lab attempt in 5 days time. I so far have never been able to get marks for NTP section. So I ask this question to the forum that if someone has ever scored 100% in the Infra Section (without breaking the NDA of course) , can they lend some light on this innocuous looking command, ntp master. Here are some finding from my POD: [10.10.100.1 = PSTN RTR 10.10.110.1=HQ RTR] 1. With NTP Master Command R1: ntp source Loopback0 ntp master 10 ntp server 10.10.100.1 source Loopback0 ! clock timezone PST -8 clock summer-time PDT recurring R2: ntp server 10.10.110.1 Show commands: R1: HQ-R1#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 250.0008 Hz, precision is 2**24 reference time is D37C1C18.AAB00668 (23:37:12.666 PDT Thu Jun 7 2012) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.03145 s/s system poll interval is 64, last update was 384 sec ago. HQ-R1# HQ-R1# HQ-R1#sh ntp ass HQ-R1#sh ntp associations address ref clock st when poll reach delay offset disp x~127.127.1.1 .LOCL. 9 16 16 377 0.000 0.000 0.240 x~10.10.100.1.LOCL. 1 50 64 377 0.000 13194.1 3.293 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured R2: BR1-R2#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 249.9990 Hz, precision is 2**24 reference time is . (16:00:00.000 PST Wed Dec 31 1899) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.03885 s/s system poll interval is 64, never updated. BR1-R2# BR1-R2#sh ntp ass address ref clock st when poll reach delay offset disp ~10.10.110.173.78.73.84 16 55 64 300 0.000 1325166 944.35 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured CUCM: admin:utils ntp status ntpd (pid 6322) is running... remote refid st t when poll reach delay offset jitter == *127.127.1.0 LOCAL(0)10 l 63 64 3770.0000.000 0.001 10.10.110.1.INIT. 16 u 64 128 3701.897 -2.990 1087693 synchronised to local net at stratum 11 time correct to within 12 ms polling server every 512 s Current time in UTC is : Fri Jun 8 06:22:22 UTC 2012 Current time in America/Los_Angeles is : Thu Jun 7 23:22:22 PDT 2012 -- Scenario 2: Without NTP Master Command. -- R1: ntp source Loopback0 ntp server 10.10.100.1 source Loopback0 ! clock timezone PST -8 clock summer-time PDT recurring R2: BR1-R2#r | s ntp ntp server 10.10.110.1 Show Commands: HQ-R1#sh ntp status Clock is synchronized, stratum 2, reference is 10.10.100.1 nominal freq is 250. Hz, actual freq is 250.0008 Hz, precision is 2**24 reference time is D37C21AB.D80D6753 (00:00:59.843 PDT Fri Jun 8 2012) clock offset is -0.0078 msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.03182 s/s system poll interval is 64, last update was 264 sec ago. HQ-R1# HQ-R1#sh ntp ass address ref clock st when poll reach delay offset disp *~10.10.100.1.LOCL. 1 11 64 377 0.000 -7.866 2.813 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured HQ-R1#sh ntp ass d 10.10.100.1 configured, our_master, sane, valid, stratum 1 ref ID .LOCL., time D37C229E.73B36D17 (00:05:02.451 PDT Fri Jun 8 2012) our mode client, peer mode server, our poll intvl 64, peer poll intvl 64 root delay 0.00 msec, root disp 0.47, reach 377, sync dist 0.00 delay 0.00 msec, offset -7.8662 msec, dispersion 2.81 precision 2**24, version 4 org time D37C22AE.D47DF91B (00:05:18.830 PDT Fri
Re: [OSL | CCIE_Voice] NTP Master Dilemm
You still only need the ntp server command. Lets say the requirement was to sync the HQ router with the PSTN router and then all other devices sync NTP with the HQ router. On the HQ rtr the only command needed is ntp server 10.10.100.2. The rest would point to the HQ rtr ip ntp server 10.10.200.3 Jason - Original Message - From: Bill Sent: 06/08/12 04:17 PM To: Jason Murray Subject: Re: [OSL | CCIE_Voice] NTP Master Dilemm Let us say they want the local router to be ntp server or back up Then y Bill On Jun 8, 2012, at 2:56 PM, Jason Murray murr...@usa.com wrote: Do not use ntp master on any of your routers. The only command that is needed is the ntp server command. Even if you want one of your routers to be the NTP server you dont need the ntp master command. Jason - Original Message - From: Mann Chaddha Sent: 06/08/12 12:19 PM To: ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] NTP Master Dilemma Hi Experts I am due for my next Lab attempt in 5 days time. I so far have never been able to get marks for NTP section. So I ask this question to the forum that if someone has ever scored 100% in the Infra Section (without breaking the NDA of course) , can they lend some light on this innocuous looking command, ntp master. Here are some finding from my POD: [10.10.100.1 = PSTN RTR 10.10.110.1=HQ RTR] 1. With NTP Master Command R1: ntp source Loopback0 ntp master 10 ntp server 10.10.100.1 source Loopback0 ! clock timezone PST -8 clock summer-time PDT recurring R2: ntp server 10.10.110.1 Show commands: R1: HQ-R1#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 250.0008 Hz, precision is 2**24 reference time is D37C1C18.AAB00668 (23:37:12.666 PDT Thu Jun 7 2012) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.03145 s/s system poll interval is 64, last update was 384 sec ago. HQ-R1# HQ-R1# HQ-R1#sh ntp ass HQ-R1#sh ntp associations address ref clock st when poll reach delay offset disp x~127.127.1.1 .LOCL. 9 16 16 377 0.000 0.000 0.240 x~10.10.100.1 .LOCL. 1 50 64 377 0.000 13194.1 3.293 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured R2: BR1-R2#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 249.9990 Hz, precision is 2**24 reference time is . (16:00:00.000 PST Wed Dec 31 1899) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.03885 s/s system poll interval is 64, never updated. BR1-R2# BR1-R2#sh ntp ass address ref clock st when poll reach delay offset disp ~10.10.110.1 73.78.73.84 16 55 64 300 0.000 1325166 944.35 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured CUCM: admin:utils ntp status ntpd (pid 6322) is running... remote refid st t when poll reach delay offset jitter == *127.127.1.0 LOCAL(0) 10 l 63 64 377 0.000 0.000 0.001 10.10.110.1 .INIT. 16 u 64 128 370 1.897 -2.990 1087693 synchronised to local net at stratum 11 time correct to within 12 ms polling server every 512 s Current time in UTC is : Fri Jun 8 06:22:22 UTC 2012 Current time in America/Los_Angeles is : Thu Jun 7 23:22:22 PDT 2012 -- Scenario 2: Without NTP Master Command. -- R1: ntp source Loopback0 ntp server 10.10.100.1 source Loopback0 ! clock timezone PST -8 clock summer-time PDT recurring R2: BR1-R2#r | s ntp ntp server 10.10.110.1 Show Commands: HQ-R1#sh ntp status Clock is synchronized, stratum 2, reference is 10.10.100.1 nominal freq is 250. Hz, actual freq is 250.0008 Hz, precision is 2**24 reference time is D37C21AB.D80D6753 (00:00:59.843 PDT Fri Jun 8 2012) clock offset is -0.0078 msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.03182 s/s system poll interval is 64, last update was 264 sec ago. HQ-R1# HQ-R1#sh ntp ass address ref clock st when poll reach delay offset disp *~10.10.100.1 .LOCL. 1 11 64 377 0.000 -7.866 2.813 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured HQ-R1#sh ntp ass d 10.10.100.1 configured, our_master, sane, valid, stratum 1 ref ID .LOCL., time D37C229E.73B36D17 (00:05:02.451 PDT Fri Jun 8 2012) our mode client, peer mode server, our poll intvl 64, peer poll intvl 64 root delay 0.00 msec, root disp 0.47, reach 377, sync dist
Re: [OSL | CCIE_Voice] NTP Master Dilemm
Sorry got called away Where I was going is they could test you on the ability to sync with external and set your router to a higher stratum number as backup in case primary fails. If the external is not available then your entering ntp server will not work because it can not sync time with the ntp server as it is not available but if you do the below it could work. This requires you to sync with external ntp, then update the routers internal clock, and finally set ntp master with stratum. This config is not reliable so I doubt they are testing it but they could as it is in scope Sample is I set the following Ntp server 10.10.100.2. Running show ntp stat shows synced with it at stratum 5 Then I sync the internal calendar Clock update-calendar Now try ntp master 10 (CUCM won't sync time with lower stratum) Now the problem I have seen is that sometimes it will sync locally even when external ntp is working Bill On Jun 8, 2012, at 7:00 PM, Jason Murray murr...@usa.com wrote: You still only need the ntp server command. Lets say the requirement was to sync the HQ router with the PSTN router and then all other devices sync NTP with the HQ router. On the HQ rtr the only command needed is ntp server 10.10.100.2.The rest would point to the HQ rtr ip ntp server 10.10.200.3 Jason - Original Message - From: Bill Sent: 06/08/12 04:17 PM To: Jason Murray Subject: Re: [OSL | CCIE_Voice] NTP Master Dilemm Let us say they want the local router to be ntp server or back up Then y Bill On Jun 8, 2012, at 2:56 PM, Jason Murray murr...@usa.com wrote: Do not use ntp master on any of your routers. The only command that is needed is the ntp server command. Even if you want one of your routers to be the NTP server you dont need the ntp master command. Jason - Original Message - From: Mann Chaddha Sent: 06/08/12 12:19 PM To: ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] NTP Master Dilemma Hi Experts I am due for my next Lab attempt in 5 days time. I so far have never been able to get marks for NTP section. So I ask this question to the forum that if someone has ever scored 100% in the Infra Section (without breaking the NDA of course) , can they lend some light on this innocuous looking command, ntp master. Here are some finding from my POD: [10.10.100.1 = PSTN RTR 10.10.110.1=HQ RTR] 1. With NTP Master Command R1: ntp source Loopback0 ntp master 10 ntp server 10.10.100.1 source Loopback0 ! clock timezone PST -8 clock summer-time PDT recurring R2: ntp server 10.10.110.1 Show commands: R1: HQ-R1#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 250.0008 Hz, precision is 2**24 reference time is D37C1C18.AAB00668 (23:37:12.666 PDT Thu Jun 7 2012) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.03145 s/s system poll interval is 64, last update was 384 sec ago. HQ-R1# HQ-R1# HQ-R1#sh ntp ass HQ-R1#sh ntp associations address ref clock st when poll reach delay offset disp x~127.127.1.1 .LOCL. 9 16 16 377 0.000 0.000 0.240 x~10.10.100.1.LOCL. 1 50 64 377 0.000 13194.1 3.293 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured R2: BR1-R2#sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250. Hz, actual freq is 249.9990 Hz, precision is 2**24 reference time is . (16:00:00.000 PST Wed Dec 31 1899) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.03885 s/s system poll interval is 64, never updated. BR1-R2# BR1-R2#sh ntp ass address ref clock st when poll reach delay offset disp ~10.10.110.173.78.73.84 16 55 64 300 0.000 1325166 944.35 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured CUCM: admin:utils ntp status ntpd (pid 6322) is running... remote refid st t when poll reach delay offset jitter == *127.127.1.0 LOCAL(0)10 l 63 64 3770.0000.000 0.001 10.10.110.1.INIT. 16 u 64 128 3701.897 -2.990 1087693 synchronised to local net at stratum 11 time correct to within 12 ms polling server every 512 s Current time in UTC is : Fri Jun 8 06:22:22 UTC 2012 Current time in America/Los_Angeles is : Thu Jun 7 23:22:22 PDT 2012
Re: [OSL | CCIE_Voice] NTP Set up lab 1A
Hi, Are you sure it is not the other way around. Setting up your CUCM Publisher to synchronize with PSTN-WAN? Julien 2012/4/25 Krishna vinayak_...@yahoo.com Can anyone advise me where the IP address 10.10.200.2 came from??? the question is to configure the PSTN-WAN router to synchronize with cucm. I am little bit confused, can anyone help me in this matter.. thanks in advance. Regards, Krishna. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP Set up lab 1A
10.10.100.2 is the f0/0 interface of the PSTN-WAN router. I've yet to see a lab from IPE that doesn't have you synch the Publisher clock to the PSTN-WAN router. -Bryan On Apr 29, 2012, at 1:01 PM, Julien Krieger wrote: Hi, Are you sure it is not the other way around. Setting up your CUCM Publisher to synchronize with PSTN-WAN? Julien 2012/4/25 Krishna vinayak_...@yahoo.com Can anyone advise me where the IP address 10.10.200.2 came from??? the question is to configure the PSTN-WAN router to synchronize with cucm. I am little bit confused, can anyone help me in this matter.. thanks in advance. Regards, Krishna. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP Set up lab 1A
Can anyone advise me where the IP address 10.10.200.2 came from??? the question is to configure the PSTN-WAN router to synchronize with cucm. I am little bit confused, can anyone help me in this matter.. thanks in advance. Regards, Krishna.___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP Server for Presence
I believe that you need to make sure that all servers are synced with same NTP. Usually, I sync my CUCM with external NTP and all other nodes to CUCM. In the exam it depends on the requirement. Regards, Mohammed Al Baqari From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of Ken Wyan Sent: Wednesday, April 18, 2012 11:48 AM To: ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] NTP Server for Presence For CUPS server , is there a recommendation to use CUCM Publisher as NTP server? Otherwise is it ok to use an external ntp server? Ken ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] NTP for UCCX
Hello, Do we need to set the NTP Server for UCCX Win Server? Or the NTP settings during the Initial Setup is enough? Well, at least for the exam. I cannot set the NTP Server for Win2003 (UCCX Server) - net time command does not work, as it is looking for Win Server NTP, and is not conencting to IOS NTP. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP for UCCX
The initial setup is enough, datucha! Enviado via iPad Em 12/02/2012, às 09:51, datucha123 datucha123 datucha...@gmail.com escreveu: Hello, Do we need to set the NTP Server for UCCX Win Server? Or the NTP settings during the Initial Setup is enough? Well, at least for the exam. I cannot set the NTP Server for Win2003 (UCCX Server) - net time command does not work, as it is looking for Win Server NTP, and is not conencting to IOS NTP. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] NTP
Please correct me if I am wrong: When the CUCM is synchornized with NTP, it synchronizes its UTC time with NTP, and then we can set the Timezone for the Platform, which will effect only OS (setting the Timezone in OS does not effect the Time on IP Phones). But when we are configuring the Date/Time Group, and setting the Timezone, it is based on the NTP synchornized UTC Time of the OS (Not the Time that is received by the Timezone in OS). The same goes for the Routers - they synchronize time through NTP, and they basically synchronize their UCT Time, and setting the Timezone on the Router will not effect the Telephony-service time. When configuring the TimeZone in Telephony-Service for IP Phones, the TimeZone is based on the Routers UTC time and not based on the Routers TimeZone corrected time. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP
For CUCM Phones , timezone of the date/time group applies. We can define an NTP server for a specific date-time group (independant of CUCM time) For CME Phones time-zone configured under telephony-service applies. But CME phones have to take time from Router only. (Router can sync to an external NTP Server) I haven't decoded NTP messages to know whether it contain time in UTC or does it contains NTP server's time it's time offset from UTC. On Tue, Jan 3, 2012 at 2:51 PM, datucha123 datucha123 datucha...@gmail.comwrote: Please correct me if I am wrong: When the CUCM is synchornized with NTP, it synchronizes its UTC time with NTP, and then we can set the Timezone for the Platform, which will effect only OS (setting the Timezone in OS does not effect the Time on IP Phones). But when we are configuring the Date/Time Group, and setting the Timezone, it is based on the NTP synchornized UTC Time of the OS (Not the Time that is received by the Timezone in OS). The same goes for the Routers - they synchronize time through NTP, and they basically synchronize their UCT Time, and setting the Timezone on the Router will not effect the Telephony-service time. When configuring the TimeZone in Telephony-Service for IP Phones, the TimeZone is based on the Routers UTC time and not based on the Routers TimeZone corrected time. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://www.platinumplacement.com/ ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP
Well, CUCM IP Phones does not take time from NTP, the NTP Reference is only for SIP Phones. As well as the SIP Phones on CME can also get time from NTP - ntp-server command in voice register global. I have made a very simple test, to prove that the UCM Platform TimeZone, and even the Routers Timezone does not have any impact on IP Phones time: Well I have changed the UCM Platform Timezone, but the IP Phones still showed up the older time. So the Platform Timezone does not have any effect on IP Phones time. The same was done on the Router - changed the IOS Timezone, and the IP Phones were still showing up the older time. So the IOS Timezone does not effect the IP phones Time. On Tue, Jan 3, 2012 at 7:14 PM, Ken Wyan kew...@gmail.com wrote: For CUCM Phones , timezone of the date/time group applies. We can define an NTP server for a specific date-time group (independant of CUCM time) For CME Phones time-zone configured under telephony-service applies. But CME phones have to take time from Router only. (Router can sync to an external NTP Server) I haven't decoded NTP messages to know whether it contain time in UTC or does it contains NTP server's time it's time offset from UTC. On Tue, Jan 3, 2012 at 2:51 PM, datucha123 datucha123 datucha...@gmail.com wrote: Please correct me if I am wrong: When the CUCM is synchornized with NTP, it synchronizes its UTC time with NTP, and then we can set the Timezone for the Platform, which will effect only OS (setting the Timezone in OS does not effect the Time on IP Phones). But when we are configuring the Date/Time Group, and setting the Timezone, it is based on the NTP synchornized UTC Time of the OS (Not the Time that is received by the Timezone in OS). The same goes for the Routers - they synchronize time through NTP, and they basically synchronize their UCT Time, and setting the Timezone on the Router will not effect the Telephony-service time. When configuring the TimeZone in Telephony-Service for IP Phones, the TimeZone is based on the Routers UTC time and not based on the Routers TimeZone corrected time. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://www.platinumplacement.com/ ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP
Thanks for sharing On Tue, Jan 3, 2012 at 9:10 PM, datucha123 datucha123 datucha...@gmail.comwrote: Well, CUCM IP Phones does not take time from NTP, the NTP Reference is only for SIP Phones. As well as the SIP Phones on CME can also get time from NTP - ntp-server command in voice register global. I have made a very simple test, to prove that the UCM Platform TimeZone, and even the Routers Timezone does not have any impact on IP Phones time: Well I have changed the UCM Platform Timezone, but the IP Phones still showed up the older time. So the Platform Timezone does not have any effect on IP Phones time. The same was done on the Router - changed the IOS Timezone, and the IP Phones were still showing up the older time. So the IOS Timezone does not effect the IP phones Time. On Tue, Jan 3, 2012 at 7:14 PM, Ken Wyan kew...@gmail.com wrote: For CUCM Phones , timezone of the date/time group applies. We can define an NTP server for a specific date-time group (independant of CUCM time) For CME Phones time-zone configured under telephony-service applies. But CME phones have to take time from Router only. (Router can sync to an external NTP Server) I haven't decoded NTP messages to know whether it contain time in UTC or does it contains NTP server's time it's time offset from UTC. On Tue, Jan 3, 2012 at 2:51 PM, datucha123 datucha123 datucha...@gmail.com wrote: Please correct me if I am wrong: When the CUCM is synchornized with NTP, it synchronizes its UTC time with NTP, and then we can set the Timezone for the Platform, which will effect only OS (setting the Timezone in OS does not effect the Time on IP Phones). But when we are configuring the Date/Time Group, and setting the Timezone, it is based on the NTP synchornized UTC Time of the OS (Not the Time that is received by the Timezone in OS). The same goes for the Routers - they synchronize time through NTP, and they basically synchronize their UCT Time, and setting the Timezone on the Router will not effect the Telephony-service time. When configuring the TimeZone in Telephony-Service for IP Phones, the TimeZone is based on the Routers UTC time and not based on the Routers TimeZone corrected time. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://www.platinumplacement.com/ ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP Falseticker
Hi Mohammed, Unfortunately I got the same result with the ntp peer. If you get a chance, try it out next time you jump on a proctorlab session and let me know what your findings are Thanks! Romain On Thu, Dec 15, 2011 at 5:59 PM, Mohd Baqari baqari.voic...@gmail.comwrote: On RTR B: 1. Instead of ntp server you need to use ntp peer 2. You need to enable ntp access-group peer. Do this and lets see the output. Regards, Mohammed Al Baqari Sent from my iPhone On Dec 16, 2011, at 12:48 AM, romain mullier romain.mull...@gmail.com wrote: Hi, Can anyone explain which are the circumstances that make your NTP flagged as falseticker? The requirement is this: Router A is NTP server. Router B synchronizes its clock with router A. If router A is unavailable then Router B uses its own internal clock. So basically Router B can synchronize well with router A. But when the 'ntp master' command is added on B, then after a few minutes, Router B will flag both sources as falsetickers. On router B: ntp master 11 ntp server 10.10.110.1 this is the IP address of A clock timezone PST -8 Output on B: address ref clock st when poll reach delay offset disp x~127.127.1.1 .LOCL. 10 5 16 377 0.000 0.000 0.254 x~10.10.110.1 10.10.100.2 7 17 64 377 0.000 -525.41 3.920 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured Thanks for your input Romain ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP Falseticker
I think you want router B's time to be close to or the same as router A's, I believe that you could drop the NTP master on B as this causes confusion in NTP and just use the NTP master, to ensure the clock is closest to router A on newer routers use the update calendar or manually set time on older ones. This is not the perfect solution you want but on 2800 series it will set the time very well. By the way using the ntp server ip command allows your router to be ntp server to anyone else but just at a lower stratum. The ntp master is from my understanding if you have to supply NTP without an external server being used. On Mon, Dec 19, 2011 at 8:00 AM, romain mullier romain.mull...@gmail.comwrote: Hi Mohammed, Unfortunately I got the same result with the ntp peer. If you get a chance, try it out next time you jump on a proctorlab session and let me know what your findings are Thanks! Romain On Thu, Dec 15, 2011 at 5:59 PM, Mohd Baqari baqari.voic...@gmail.comwrote: On RTR B: 1. Instead of ntp server you need to use ntp peer 2. You need to enable ntp access-group peer. Do this and lets see the output. Regards, Mohammed Al Baqari Sent from my iPhone On Dec 16, 2011, at 12:48 AM, romain mullier romain.mull...@gmail.com wrote: Hi, Can anyone explain which are the circumstances that make your NTP flagged as falseticker? The requirement is this: Router A is NTP server. Router B synchronizes its clock with router A. If router A is unavailable then Router B uses its own internal clock. So basically Router B can synchronize well with router A. But when the 'ntp master' command is added on B, then after a few minutes, Router B will flag both sources as falsetickers. On router B: ntp master 11 ntp server 10.10.110.1 this is the IP address of A clock timezone PST -8 Output on B: address ref clock st when poll reach delay offset disp x~127.127.1.1 .LOCL. 10 5 16 377 0.000 0.000 0.254 x~10.10.110.1 10.10.100.2 7 17 64 377 0.000 -525.41 3.920 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured Thanks for your input Romain ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP Falseticker
Sorry meant I believe that you could drop the NTP master on B as this causes confusion in NTP and just use the *NTP server*, On Mon, Dec 19, 2011 at 8:31 AM, Bill Lake whl...@gmail.com wrote: I think you want router B's time to be close to or the same as router A's, I believe that you could drop the NTP master on B as this causes confusion in NTP and just use the NTP master, to ensure the clock is closest to router A on newer routers use the update calendar or manually set time on older ones. This is not the perfect solution you want but on 2800 series it will set the time very well. By the way using the ntp server ip command allows your router to be ntp server to anyone else but just at a lower stratum. The ntp master is from my understanding if you have to supply NTP without an external server being used. On Mon, Dec 19, 2011 at 8:00 AM, romain mullier romain.mull...@gmail.comwrote: Hi Mohammed, Unfortunately I got the same result with the ntp peer. If you get a chance, try it out next time you jump on a proctorlab session and let me know what your findings are Thanks! Romain On Thu, Dec 15, 2011 at 5:59 PM, Mohd Baqari baqari.voic...@gmail.comwrote: On RTR B: 1. Instead of ntp server you need to use ntp peer 2. You need to enable ntp access-group peer. Do this and lets see the output. Regards, Mohammed Al Baqari Sent from my iPhone On Dec 16, 2011, at 12:48 AM, romain mullier romain.mull...@gmail.com wrote: Hi, Can anyone explain which are the circumstances that make your NTP flagged as falseticker? The requirement is this: Router A is NTP server. Router B synchronizes its clock with router A. If router A is unavailable then Router B uses its own internal clock. So basically Router B can synchronize well with router A. But when the 'ntp master' command is added on B, then after a few minutes, Router B will flag both sources as falsetickers. On router B: ntp master 11 ntp server 10.10.110.1 this is the IP address of A clock timezone PST -8 Output on B: address ref clock st when poll reach delay offset disp x~127.127.1.1 .LOCL. 10 5 16 377 0.000 0.000 0.254 x~10.10.110.1 10.10.100.2 7 17 64 377 0.000 -525.41 3.920 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured Thanks for your input Romain ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] NTP Falseticker
Hi, Can anyone explain which are the circumstances that make your NTP flagged as falseticker? The requirement is this: Router A is NTP server. Router B synchronizes its clock with router A. If router A is unavailable then Router B uses its own internal clock. So basically Router B can synchronize well with router A. But when the 'ntp master' command is added on B, then after a few minutes, Router B will flag both sources as falsetickers. On router B: ntp master 11 ntp server 10.10.110.1 this is the IP address of A clock timezone PST -8 Output on B: address ref clock st when poll reach delay offset disp x~127.127.1.1 .LOCL. 10 5 16 377 0.000 0.000 0.254 x~10.10.110.1 10.10.100.2 7 17 64 377 0.000 -525.41 3.920 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured Thanks for your input Romain ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP Falseticker
On RTR B: 1. Instead of ntp server you need to use ntp peer 2. You need to enable ntp access-group peer. Do this and lets see the output. Regards, Mohammed Al Baqari Sent from my iPhone On Dec 16, 2011, at 12:48 AM, romain mullier romain.mull...@gmail.com wrote: Hi, Can anyone explain which are the circumstances that make your NTP flagged as falseticker? The requirement is this: Router A is NTP server. Router B synchronizes its clock with router A. If router A is unavailable then Router B uses its own internal clock. So basically Router B can synchronize well with router A. But when the 'ntp master' command is added on B, then after a few minutes, Router B will flag both sources as falsetickers. On router B: ntp master 11 ntp server 10.10.110.1 this is the IP address of A clock timezone PST -8 Output on B: address ref clock st when poll reach delay offset disp x~127.127.1.1 .LOCL. 10 5 16 377 0.000 0.000 0.254 x~10.10.110.1 10.10.100.2 7 17 64 377 0.000 -525.41 3.920 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured Thanks for your input Romain ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
Ntp is not slow when i put the ntp master command on HQ router and the cucm syn right the way. i took off the ntp master from the hq and only have ntp server and ntp source lo0. and reboot the cucm and the hq. and let it set for 4hrs to 5hrs and the cucm would not syn, but the moment i put the ntp master it syns within 2 mins... you can try it in you lab and let me know.. make sure you reboot the cucm and the hq router... From: Justin Barksdale jus...@barksdale.net To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Sent: Sunday, September 18, 2011 9:14 PM Subject: Re: [OSL | CCIE_Voice] ntp NTP is by nature slow. An earlier post pointed out the correct method. If the question wants you to sync hq with the pstn and then ccm with hq then the ntp master command will break this requirement. All that is required on the HQ router is ntp server x.x.x.x This is also mentioned in Vic's class class as well as Cisco documentation. The important key here is that the ntp master command can cause you to override a valid external time source and thus can be very dangerous. As long as the ntp server command points to a valid and reachable ntp source then the hq router will sync and you WILL be able to sync ucm without the ntp master command. Justin Barksdale CCIE# 29866 Voice Sent from my iPhone 4. Please excuse any typos. On Sep 18, 2011, at 7:39 PM, ccie_voice-requ...@onlinestudylist.com wrote: Re: [OSL | CCIE_Voice] ntp ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
If this is the case then the address you are pointing to at the pstn is incorrect. If you add the ntp server to the router and do show ntp status the router MUST be syncing with an external source or UCM will not sync. Furthermore a reboot is not required on UCM or ther router. Simply add the address to UCM and do utils ntp restart from cli. The key is that the ntp source the router is syncing with must be valid. Sent from my iPhone 4. On Sep 19, 2011, at 1:12 AM, Ray jonha...@yahoo.com wrote: Ntp is not slow when i put the ntp master command on HQ router and the cucm syn right the way. i took off the ntp master from the hq and only have ntp server and ntp source lo0. and reboot the cucm and the hq. and let it set for 4hrs to 5hrs and the cucm would not syn, but the moment i put the ntp master it syns within 2 mins... you can try it in you lab and let me know.. make sure you reboot the cucm and the hq router... From: Justin Barksdale jus...@barksdale.net To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Sent: Sunday, September 18, 2011 9:14 PM Subject: Re: [OSL | CCIE_Voice] ntp NTP is by nature slow. An earlier post pointed out the correct method. If the question wants you to sync hq with the pstn and then ccm with hq then the ntp master command will break this requirement. All that is required on the HQ router is ntp server x.x.x.x This is also mentioned in Vic's class class as well as Cisco documentation. The important key here is that the ntp master command can cause you to override a valid external time source and thus can be very dangerous. As long as the ntp server command points to a valid and reachable ntp source then the hq router will sync and you WILL be able to sync ucm without the ntp master command. Justin Barksdale CCIE# 29866 Voice Sent from my iPhone 4. Please excuse any typos. On Sep 18, 2011, at 7:39 PM, ccie_voice-requ...@onlinestudylist.com wrote: Re: [OSL | CCIE_Voice] ntp ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
Ray, I have never put the NTP master command on my routers and I have not had an issue with the CUCM sync to the (HQ) router. I use mainly the VRACKs from proctor, and in my little lab at home it's the same. As long as I have set the time I want in the PSTN router for the HQ router to sync off I have not had an issue. EJF From: Ray jonha...@yahoo.com To: Justin Barksdale jus...@barksdale.net; ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Sent: Monday, September 19, 2011 1:12 AM Subject: Re: [OSL | CCIE_Voice] ntp Ntp is not slow when i put the ntp master command on HQ router and the cucm syn right the way. i took off the ntp master from the hq and only have ntp server and ntp source lo0. and reboot the cucm and the hq. and let it set for 4hrs to 5hrs and the cucm would not syn, but the moment i put the ntp master it syns within 2 mins... you can try it in you lab and let me know.. make sure you reboot the cucm and the hq router... From: Justin Barksdale jus...@barksdale.net To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Sent: Sunday, September 18, 2011 9:14 PM Subject: Re: [OSL | CCIE_Voice] ntp NTP is by nature slow. An earlier post pointed out the correct method. If the question wants you to sync hq with the pstn and then ccm with hq then the ntp master command will break this requirement. All that is required on the HQ router is ntp server x.x.x.x This is also mentioned in Vic's class class as well as Cisco documentation. The important key here is that the ntp master command can cause you to override a valid external time source and thus can be very dangerous. As long as the ntp server command points to a valid and reachable ntp source then the hq router will sync and you WILL be able to sync ucm without the ntp master command. Justin Barksdale CCIE# 29866 Voice Sent from my iPhone 4. Please excuse any typos. On Sep 18, 2011, at 7:39 PM, ccie_voice-requ...@onlinestudylist.com wrote: Re: [OSL | CCIE_Voice] ntp ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
Hello All , i have review the NTP principle again with my Colleagues and with Amit who did lab for this ( Thanks ALOT) and we have done some show commands on the CCM and the IOS in regard of this issue what we found is that the the lowest stratum is the Best and stratum -0 is the lowest value we have in Cisco world, what Justin and the other stated is correct , we will not need Master command to sync the other internal network components to the HQ router , its enough to sync HQ with the UTC based server and then the other routers should take the time correctly from the HQ on UTC based as well the CCM pub is stratum 11 by default and the SUB is 12 , do utils ntp status before you sync them , so based on the above , to sync the CCM with the HQ ntp please make sure that you have Stratum lower than 11 at your HQ and you should be good to go , Justain , Amit , everyone , thank you for sharing / discussing this issue , this is very helpful and add new info for me and i hope the same happened for another people Best Regards Ash On Sun, Sep 18, 2011 at 11:11 PM, Justin Barksdale jus...@barksdale.net wrote: If this is the case then the address you are pointing to at the pstn is incorrect. If you add the ntp server to the router and do show ntp status the router MUST be syncing with an external source or UCM will not sync. Furthermore a reboot is not required on UCM or ther router. Simply add the address to UCM and do utils ntp restart from cli. The key is that the ntp source the router is syncing with must be valid. Sent from my iPhone 4. On Sep 19, 2011, at 1:12 AM, Ray jonha...@yahoo.com wrote: Ntp is not slow when i put the ntp master command on HQ router and the cucm syn right the way. i took off the ntp master from the hq and only have ntp server and ntp source lo0. and reboot the cucm and the hq. and let it set for 4hrs to 5hrs and the cucm would not syn, but the moment i put the ntp master it syns within 2 mins... you can try it in you lab and let me know.. make sure you reboot the cucm and the hq router... From: Justin Barksdale jus...@barksdale.net To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Sent: Sunday, September 18, 2011 9:14 PM Subject: Re: [OSL | CCIE_Voice] ntp NTP is by nature slow. An earlier post pointed out the correct method. If the question wants you to sync hq with the pstn and then ccm with hq then the ntp master command will break this requirement. All that is required on the HQ router is ntp server x.x.x.x This is also mentioned in Vic's class class as well as Cisco documentation. The important key here is that the ntp master command can cause you to override a valid external time source and thus can be very dangerous. As long as the ntp server command points to a valid and reachable ntp source then the hq router will sync and you WILL be able to sync ucm without the ntp master command. Justin Barksdale CCIE# 29866 Voice Sent from my iPhone 4. Please excuse any typos. On Sep 18, 2011, at 7:39 PM, ccie_voice-requ...@onlinestudylist.com wrote: Re: [OSL | CCIE_Voice] ntp ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
yes you lower the stratum at HQ with the ntp master command, but the issue is the UTC server has the higest stratum... so if you put any stratum on HQ it will only syn to itself and not the UTC server higher stratum will syn from lower stratum that is how it works.. I am going to put only ntp server and ntp source on hq and set the ntp on cucm to be hq loopback and let it set for hours and see it can syn again... if it doesnt syn i will put the ntp master and reboot and see if it syns.. From: Ashraf Ayyash ash.ayy...@gmail.com To: Justin Barksdale jus...@barksdale.net Cc: Ray jonha...@yahoo.com; ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Sent: Monday, September 19, 2011 8:51 AM Subject: Re: [OSL | CCIE_Voice] ntp Hello All , i have review the NTP principle again with my Colleagues and with Amit who did lab for this ( Thanks ALOT) and we have done some show commands on the CCM and the IOS in regard of this issue what we found is that the the lowest stratum is the Best and stratum -0 is the lowest value we have in Cisco world, what Justin and the other stated is correct , we will not need Master command to sync the other internal network components to the HQ router , its enough to sync HQ with the UTC based server and then the other routers should take the time correctly from the HQ on UTC based as well the CCM pub is stratum 11 by default and the SUB is 12 , do utils ntp status before you sync them , so based on the above , to sync the CCM with the HQ ntp please make sure that you have Stratum lower than 11 at your HQ and you should be good to go , Justain , Amit , everyone , thank you for sharing / discussing this issue , this is very helpful and add new info for me and i hope the same happened for another people Best Regards Ash On Sun, Sep 18, 2011 at 11:11 PM, Justin Barksdale jus...@barksdale.net wrote: If this is the case then the address you are pointing to at the pstn is incorrect. If you add the ntp server to the router and do show ntp status the router MUST be syncing with an external source or UCM will not sync. Furthermore a reboot is not required on UCM or ther router. Simply add the address to UCM and do utils ntp restart from cli. The key is that the ntp source the router is syncing with must be valid. Sent from my iPhone 4. On Sep 19, 2011, at 1:12 AM, Ray jonha...@yahoo.com wrote: Ntp is not slow when i put the ntp master command on HQ router and the cucm syn right the way. i took off the ntp master from the hq and only have ntp server and ntp source lo0. and reboot the cucm and the hq. and let it set for 4hrs to 5hrs and the cucm would not syn, but the moment i put the ntp master it syns within 2 mins... you can try it in you lab and let me know.. make sure you reboot the cucm and the hq router... From: Justin Barksdale jus...@barksdale.net To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Sent: Sunday, September 18, 2011 9:14 PM Subject: Re: [OSL | CCIE_Voice] ntp NTP is by nature slow. An earlier post pointed out the correct method. If the question wants you to sync hq with the pstn and then ccm with hq then the ntp master command will break this requirement. All that is required on the HQ router is ntp server x.x.x.x This is also mentioned in Vic's class class as well as Cisco documentation. The important key here is that the ntp master command can cause you to override a valid external time source and thus can be very dangerous. As long as the ntp server command points to a valid and reachable ntp source then the hq router will sync and you WILL be able to sync ucm without the ntp master command. Justin Barksdale CCIE# 29866 Voice Sent from my iPhone 4. Please excuse any typos. On Sep 18, 2011, at 7:39 PM, ccie_voice-requ...@onlinestudylist.com wrote: Re: [OSL | CCIE_Voice] ntp ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
or NTP server is configured, the router can synchronize fine with the defined time source. Workaround: If configuring only ntp master or ntp server, the router will synchronize http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetailsbugId=CSCsw30737from=summary On Mon, Sep 19, 2011 at 9:53 AM, Ray jonha...@yahoo.com wrote: yes you lower the stratum at HQ with the ntp master command, but the issue is the UTC server has the higest stratum... so if you put any stratum on HQ it will only syn to itself and not the UTC server higher stratum will syn from lower stratum that is how it works.. I am going to put only ntp server and ntp source on hq and set the ntp on cucm to be hq loopback and let it set for hours and see it can syn again... if it doesnt syn i will put the ntp master and reboot and see if it syns.. From: Ashraf Ayyash ash.ayy...@gmail.com To: Justin Barksdale jus...@barksdale.net Cc: Ray jonha...@yahoo.com; ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Sent: Monday, September 19, 2011 8:51 AM Subject: Re: [OSL | CCIE_Voice] ntp Hello All , i have review the NTP principle again with my Colleagues and with Amit who did lab for this ( Thanks ALOT) and we have done some show commands on the CCM and the IOS in regard of this issue what we found is that the the lowest stratum is the Best and stratum -0 is the lowest value we have in Cisco world, what Justin and the other stated is correct , we will not need Master command to sync the other internal network components to the HQ router , its enough to sync HQ with the UTC based server and then the other routers should take the time correctly from the HQ on UTC based as well the CCM pub is stratum 11 by default and the SUB is 12 , do utils ntp status before you sync them , so based on the above , to sync the CCM with the HQ ntp please make sure that you have Stratum lower than 11 at your HQ and you should be good to go , Justain , Amit , everyone , thank you for sharing / discussing this issue , this is very helpful and add new info for me and i hope the same happened for another people Best Regards Ash On Sun, Sep 18, 2011 at 11:11 PM, Justin Barksdale jus...@barksdale.net wrote: If this is the case then the address you are pointing to at the pstn is incorrect. If you add the ntp server to the router and do show ntp status the router MUST be syncing with an external source or UCM will not sync. Furthermore a reboot is not required on UCM or ther router. Simply add the address to UCM and do utils ntp restart from cli. The key is that the ntp source the router is syncing with must be valid. Sent from my iPhone 4. On Sep 19, 2011, at 1:12 AM, Ray jonha...@yahoo.com wrote: Ntp is not slow when i put the ntp master command on HQ router and the cucm syn right the way. i took off the ntp master from the hq and only have ntp server and ntp source lo0. and reboot the cucm and the hq. and let it set for 4hrs to 5hrs and the cucm would not syn, but the moment i put the ntp master it syns within 2 mins... you can try it in you lab and let me know.. make sure you reboot the cucm and the hq router... From: Justin Barksdale jus...@barksdale.net To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Sent: Sunday, September 18, 2011 9:14 PM Subject: Re: [OSL | CCIE_Voice] ntp NTP is by nature slow. An earlier post pointed out the correct method. If the question wants you to sync hq with the pstn and then ccm with hq then the ntp master command will break this requirement. All that is required on the HQ router is ntp server x.x.x.x This is also mentioned in Vic's class class as well as Cisco documentation. The important key here is that the ntp master command can cause you to override a valid external time source and thus can be very dangerous. As long as the ntp server command points to a valid and reachable ntp source then the hq router will sync and you WILL be able to sync ucm without the ntp master command. Justin Barksdale CCIE# 29866 Voice Sent from my iPhone 4. Please excuse any typos. On Sep 18, 2011, at 7:39 PM, ccie_voice-requ...@onlinestudylist.com wrote: Re: [OSL | CCIE_Voice] ntp ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking
Re: [OSL | CCIE_Voice] ntp
i found the issue , i took out the ntp master and then shut down/ no shut my f0/0 connecting to the UTC server, and the clock was syncing as below.. good hq#sh ntp ass address ref clock st when poll reach delay offset disp*~157.26.1.100 127.127.1.1 15 63 64 377 0.000 2901006 3.641 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho run | s ntpntp source Loopback0ntp server 157.26.1.100 --- On Sat, 9/17/11, Marko Milivojevic mar...@ipexpert.com wrote: From: Marko Milivojevic mar...@ipexpert.com Subject: Re: [OSL | CCIE_Voice] ntp To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Date: Saturday, September 17, 2011, 11:44 PM Why did you configure your router to be NTP master? When you did that, on which stratum did your router operate? If it was less than 15, will it sync to a server on stratum 15? Answer these questions and you'll know the answer to yours :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: mar...@ipexpert.com Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Sat, Sep 17, 2011 at 18:14, Ray jonha...@yahoo.com wrote: looking at the sho ntp ass below and the config below. I could not make the Hq router syn its time from 1567.26.1.100. this question troubled me when i took the exams. any idea!!!.. the UTC server at 157.26.1.100 was set to stratum 15 i think... so how can u make HQ syn time from the UTC server... I was confused here.. ntp source Loopback0 ntp master ntp server 157.26.1.100 hq#sho ntp ass address ref clock st when poll reach delay offset disp *~127.127.1.1 .LOCL. 7 12 16 377 0.000 0.000 0.238 ~157.26.1.100 78.85.76.76 16 34 64 376 0.000 2901016 2.591 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
Hi all , if we took off the master command we will not be able to sync our internal network entities to the HQ router , please feel free to correct me if i am wrong , the output you gave Ray for the first email and the config say that you have added the master command before you synced with the external ntp and so your internal router got the highest level , to get rid of this you can configure the ntp server and then make sure that you are synced and then use the master command with lower *stratum level and this should do the trick for you , below the link : http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1004877 Ash * On Sat, Sep 17, 2011 at 11:35 PM, Ray jonha...@yahoo.com wrote: i found the issue , i took out the ntp master and then shut down/ no shut my f0/0 connecting to the UTC server, and the clock was syncing as below.. good hq#sh ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100127.127.1.1 15 63 64 377 0.000 2901006 3.641 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho run | s ntp ntp source Loopback0 ntp server 157.26.1.100 --- On *Sat, 9/17/11, Marko Milivojevic mar...@ipexpert.com* wrote: From: Marko Milivojevic mar...@ipexpert.com Subject: Re: [OSL | CCIE_Voice] ntp To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Date: Saturday, September 17, 2011, 11:44 PM Why did you configure your router to be NTP master? When you did that, on which stratum did your router operate? If it was less than 15, will it sync to a server on stratum 15? Answer these questions and you'll know the answer to yours :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: mar...@ipexpert.com http://mc/compose?to=mar...@ipexpert.com Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Sat, Sep 17, 2011 at 18:14, Ray jonha...@yahoo.comhttp://mc/compose?to=jonha...@yahoo.com wrote: looking at the sho ntp ass below and the config below. I could not make the Hq router syn its time from 1567.26.1.100. this question troubled me when i took the exams. any idea!!!.. the UTC server at 157.26.1.100 was set to stratum 15 i think... so how can u make HQ syn time from the UTC server... I was confused here.. ntp source Loopback0 ntp master ntp server 157.26.1.100 hq#sho ntp ass address ref clock st when poll reach delay offset disp *~127.127.1.1 .LOCL. 7 12 16 377 0.000 0.000 0.238 ~157.26.1.10078.85.76.76 16 34 64 376 0.000 2901016 2.591 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
you are able to sync with out the master command to the HQ router ? can you get show ntp status assoc please ? On Sun, Sep 18, 2011 at 6:21 AM, Mini Me cciev.min...@gmail.com wrote: Hi Ashraf, You will still be able to sync time without the master command. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 02:28:12 -0700 To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp Hi all , if we took off the master command we will not be able to sync our internal network entities to the HQ router , please feel free to correct me if i am wrong , the output you gave Ray for the first email and the config say that you have added the master command before you synced with the external ntp and so your internal router got the highest level , to get rid of this you can configure the ntp server and then make sure that you are synced and then use the master command with lower *stratum level and this should do the trick for you , below the link : http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1004877 Ash * On Sat, Sep 17, 2011 at 11:35 PM, Ray jonha...@yahoo.com wrote: i found the issue , i took out the ntp master and then shut down/ no shut my f0/0 connecting to the UTC server, and the clock was syncing as below.. good hq#sh ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100127.127.1.1 15 63 64 377 0.000 2901006 3.641 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho run | s ntp ntp source Loopback0 ntp server 157.26.1.100 --- On *Sat, 9/17/11, Marko Milivojevic mar...@ipexpert.com* wrote: From: Marko Milivojevic mar...@ipexpert.com Subject: Re: [OSL | CCIE_Voice] ntp To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Date: Saturday, September 17, 2011, 11:44 PM Why did you configure your router to be NTP master? When you did that, on which stratum did your router operate? If it was less than 15, will it sync to a server on stratum 15? Answer these questions and you'll know the answer to yours :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: mar...@ipexpert.com http://mc/compose?to=mar...@ipexpert.com Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Sat, Sep 17, 2011 at 18:14, Ray jonha...@yahoo.comhttp://mc/compose?to=jonha...@yahoo.com wrote: looking at the sho ntp ass below and the config below. I could not make the Hq router syn its time from 1567.26.1.100. this question troubled me when i took the exams. any idea!!!.. the UTC server at 157.26.1.100 was set to stratum 15 i think... so how can u make HQ syn time from the UTC server... I was confused here.. ntp source Loopback0 ntp master ntp server 157.26.1.100 hq#sho ntp ass address ref clock st when poll reach delay offset disp *~127.127.1.1 .LOCL. 7 12 16 377 0.000 0.000 0.238 ~157.26.1.10078.85.76.76 16 34 64 376 0.000 2901016 2.591 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
Yes I did when I was studying and it works.Make sure the HQ router syncs with external NTP . I passed and no longer have a lab to send you output. Sorry about that. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 06:24:06 -0700 To: Prashant Patel cciev.min...@gmail.com Cc: Ray jonha...@yahoo.com, ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp you are able to sync with out the master command to the HQ router ? can you get show ntp status assoc please ? On Sun, Sep 18, 2011 at 6:21 AM, Mini Me cciev.min...@gmail.com wrote: Hi Ashraf, You will still be able to sync time without the master command. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 02:28:12 -0700 To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp Hi all , if we took off the master command we will not be able to sync our internal network entities to the HQ router , please feel free to correct me if i am wrong , the output you gave Ray for the first email and the config say that you have added the master command before you synced with the external ntp and so your internal router got the highest level , to get rid of this you can configure the ntp server and then make sure that you are synced and then use the master command with lower stratum level and this should do the trick for you , below the link : http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303. html#wp1004877 Ash On Sat, Sep 17, 2011 at 11:35 PM, Ray jonha...@yahoo.com wrote: i found the issue , i took out the ntp master and then shut down/ no shut my f0/0 connecting to the UTC server, and the clock was syncing as below.. good hq#sh ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100127.127.1.1 15 63 64 377 0.000 2901006 3.641 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho run | s ntp ntp source Loopback0 ntp server 157.26.1.100 --- On Sat, 9/17/11, Marko Milivojevic mar...@ipexpert.com wrote: From: Marko Milivojevic mar...@ipexpert.com Subject: Re: [OSL | CCIE_Voice] ntp To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Date: Saturday, September 17, 2011, 11:44 PM Why did you configure your router to be NTP master? When you did that, on which stratum did your router operate? If it was less than 15, will it sync to a server on stratum 15? Answer these questions and you'll know the answer to yours :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: mar...@ipexpert.com http://mc/compose?to=mar...@ipexpert.com Telephone: +1.810.326.1444 tel:%2B1.810.326.1444 Web: http://www.ipexpert.com/ On Sat, Sep 17, 2011 at 18:14, Ray jonha...@yahoo.com http://mc/compose?to=jonha...@yahoo.com wrote: looking at the sho ntp ass below and the config below. I could not make the Hq router syn its time from 1567.26.1.100. this question troubled me when i took the exams. any idea!!!.. the UTC server at 157.26.1.100 was set to stratum 15 i think... so how can u make HQ syn time from the UTC server... I was confused here.. ntp source Loopback0 ntp master ntp server 157.26.1.100 hq#sho ntp ass address ref clock st when poll reach delay offset disp *~127.127.1.1 .LOCL. 7 12 16 377 0.000 0.000 0.238 ~157.26.1.10078.85.76.76 16 34 64 376 0.000 2901016 2.591 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com http://www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com http://www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com http://www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
okay thanks for the clarification but can you please explain the principle or the logic behind that ? if the router is not master it cannot provide clocking how its working then ? please clarify Ash On Sun, Sep 18, 2011 at 6:27 AM, Mini Me cciev.min...@gmail.com wrote: Yes I did when I was studying and it works.Make sure the HQ router syncs with external NTP . I passed and no longer have a lab to send you output. Sorry about that. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 06:24:06 -0700 To: Prashant Patel cciev.min...@gmail.com Cc: Ray jonha...@yahoo.com, ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp you are able to sync with out the master command to the HQ router ? can you get show ntp status assoc please ? On Sun, Sep 18, 2011 at 6:21 AM, Mini Me cciev.min...@gmail.com wrote: Hi Ashraf, You will still be able to sync time without the master command. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 02:28:12 -0700 To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp Hi all , if we took off the master command we will not be able to sync our internal network entities to the HQ router , please feel free to correct me if i am wrong , the output you gave Ray for the first email and the config say that you have added the master command before you synced with the external ntp and so your internal router got the highest level , to get rid of this you can configure the ntp server and then make sure that you are synced and then use the master command with lower *stratum level and this should do the trick for you , below the link : http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1004877 Ash * On Sat, Sep 17, 2011 at 11:35 PM, Ray jonha...@yahoo.com wrote: i found the issue , i took out the ntp master and then shut down/ no shut my f0/0 connecting to the UTC server, and the clock was syncing as below.. good hq#sh ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100127.127.1.1 15 63 64 377 0.000 2901006 3.641 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho run | s ntp ntp source Loopback0 ntp server 157.26.1.100 --- On *Sat, 9/17/11, Marko Milivojevic mar...@ipexpert.com* wrote: From: Marko Milivojevic mar...@ipexpert.com Subject: Re: [OSL | CCIE_Voice] ntp To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Date: Saturday, September 17, 2011, 11:44 PM Why did you configure your router to be NTP master? When you did that, on which stratum did your router operate? If it was less than 15, will it sync to a server on stratum 15? Answer these questions and you'll know the answer to yours :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: mar...@ipexpert.com http://mc/compose?to=mar...@ipexpert.com Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Sat, Sep 17, 2011 at 18:14, Ray jonha...@yahoo.comhttp://mc/compose?to=jonha...@yahoo.com wrote: looking at the sho ntp ass below and the config below. I could not make the Hq router syn its time from 1567.26.1.100. this question troubled me when i took the exams. any idea!!!.. the UTC server at 157.26.1.100 was set to stratum 15 i think... so how can u make HQ syn time from the UTC server... I was confused here.. ntp source Loopback0 ntp master ntp server 157.26.1.100 hq#sho ntp ass address ref clock st when poll reach delay offset disp *~127.127.1.1 .LOCL. 7 12 16 377 0.000 0.000 0.238 ~157.26.1.10078.85.76.76 16 34 64 376 0.000 2901016 2.591 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
It will work as an ntp source as long as it is synced with an ntp server. The master command only changes the stratum of the ntp source. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 06:31:51 -0700 To: Prashant Patel cciev.min...@gmail.com Cc: Ray jonha...@yahoo.com, ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp okay thanks for the clarification but can you please explain the principle or the logic behind that ? if the router is not master it cannot provide clocking how its working then ? please clarify Ash On Sun, Sep 18, 2011 at 6:27 AM, Mini Me cciev.min...@gmail.com wrote: Yes I did when I was studying and it works.Make sure the HQ router syncs with external NTP . I passed and no longer have a lab to send you output. Sorry about that. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 06:24:06 -0700 To: Prashant Patel cciev.min...@gmail.com Cc: Ray jonha...@yahoo.com, ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp you are able to sync with out the master command to the HQ router ? can you get show ntp status assoc please ? On Sun, Sep 18, 2011 at 6:21 AM, Mini Me cciev.min...@gmail.com wrote: Hi Ashraf, You will still be able to sync time without the master command. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 02:28:12 -0700 To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp Hi all , if we took off the master command we will not be able to sync our internal network entities to the HQ router , please feel free to correct me if i am wrong , the output you gave Ray for the first email and the config say that you have added the master command before you synced with the external ntp and so your internal router got the highest level , to get rid of this you can configure the ntp server and then make sure that you are synced and then use the master command with lower stratum level and this should do the trick for you , below the link : http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303 .html#wp1004877 Ash On Sat, Sep 17, 2011 at 11:35 PM, Ray jonha...@yahoo.com wrote: i found the issue , i took out the ntp master and then shut down/ no shut my f0/0 connecting to the UTC server, and the clock was syncing as below.. good hq#sh ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100127.127.1.1 15 63 64 377 0.000 2901006 3.641 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho run | s ntp ntp source Loopback0 ntp server 157.26.1.100 --- On Sat, 9/17/11, Marko Milivojevic mar...@ipexpert.com wrote: From: Marko Milivojevic mar...@ipexpert.com Subject: Re: [OSL | CCIE_Voice] ntp To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Date: Saturday, September 17, 2011, 11:44 PM Why did you configure your router to be NTP master? When you did that, on which stratum did your router operate? If it was less than 15, will it sync to a server on stratum 15? Answer these questions and you'll know the answer to yours :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: mar...@ipexpert.com http://mc/compose?to=mar...@ipexpert.com Telephone: +1.810.326.1444 tel:%2B1.810.326.1444 Web: http://www.ipexpert.com/ On Sat, Sep 17, 2011 at 18:14, Ray jonha...@yahoo.com http://mc/compose?to=jonha...@yahoo.com wrote: looking at the sho ntp ass below and the config below. I could not make the Hq router syn its time from 1567.26.1.100. this question troubled me when i took the exams. any idea!!!.. the UTC server at 157.26.1.100 was set to stratum 15 i think... so how can u make HQ syn time from the UTC server... I was confused here.. ntp source Loopback0 ntp master ntp server 157.26.1.100 hq#sho ntp ass address ref clock st when poll reach delay offset disp *~127.127.1.1 .LOCL. 7 12 16 377 0.000 0.000 0.238 ~157.26.1.10078.85.76.76 16 34 64 376 0.000 2901016 2.591 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com http://www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com http://www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
thats intersting info , can you please let me know if this is docmented anywhere at Cisco DOC's ? Ash On Sun, Sep 18, 2011 at 6:35 AM, Mini Me cciev.min...@gmail.com wrote: It will work as an ntp source as long as it is synced with an ntp server. The master command only changes the stratum of the ntp source. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 06:31:51 -0700 To: Prashant Patel cciev.min...@gmail.com Cc: Ray jonha...@yahoo.com, ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp okay thanks for the clarification but can you please explain the principle or the logic behind that ? if the router is not master it cannot provide clocking how its working then ? please clarify Ash On Sun, Sep 18, 2011 at 6:27 AM, Mini Me cciev.min...@gmail.com wrote: Yes I did when I was studying and it works.Make sure the HQ router syncs with external NTP . I passed and no longer have a lab to send you output. Sorry about that. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 06:24:06 -0700 To: Prashant Patel cciev.min...@gmail.com Cc: Ray jonha...@yahoo.com, ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp you are able to sync with out the master command to the HQ router ? can you get show ntp status assoc please ? On Sun, Sep 18, 2011 at 6:21 AM, Mini Me cciev.min...@gmail.com wrote: Hi Ashraf, You will still be able to sync time without the master command. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 02:28:12 -0700 To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp Hi all , if we took off the master command we will not be able to sync our internal network entities to the HQ router , please feel free to correct me if i am wrong , the output you gave Ray for the first email and the config say that you have added the master command before you synced with the external ntp and so your internal router got the highest level , to get rid of this you can configure the ntp server and then make sure that you are synced and then use the master command with lower *stratum level and this should do the trick for you , below the link : http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1004877 Ash * On Sat, Sep 17, 2011 at 11:35 PM, Ray jonha...@yahoo.com wrote: i found the issue , i took out the ntp master and then shut down/ no shut my f0/0 connecting to the UTC server, and the clock was syncing as below.. good hq#sh ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100127.127.1.1 15 63 64 377 0.000 2901006 3.641 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho run | s ntp ntp source Loopback0 ntp server 157.26.1.100 --- On *Sat, 9/17/11, Marko Milivojevic mar...@ipexpert.com* wrote: From: Marko Milivojevic mar...@ipexpert.com Subject: Re: [OSL | CCIE_Voice] ntp To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Date: Saturday, September 17, 2011, 11:44 PM Why did you configure your router to be NTP master? When you did that, on which stratum did your router operate? If it was less than 15, will it sync to a server on stratum 15? Answer these questions and you'll know the answer to yours :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: mar...@ipexpert.com http://mc/compose?to=mar...@ipexpert.com Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Sat, Sep 17, 2011 at 18:14, Ray jonha...@yahoo.comhttp://mc/compose?to=jonha...@yahoo.com wrote: looking at the sho ntp ass below and the config below. I could not make the Hq router syn its time from 1567.26.1.100. this question troubled me when i took the exams. any idea!!!.. the UTC server at 157.26.1.100 was set to stratum 15 i think... so how can u make HQ syn time from the UTC server... I was confused here.. ntp source Loopback0 ntp master ntp server 157.26.1.100 hq#sho ntp ass address ref clock st when poll reach delay offset disp *~127.127.1.1 .LOCL. 7 12 16 377 0.000 0.000 0.238 ~157.26.1.10078.85.76.76 16 34 64 376 0.000 2901016 2.591 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE
Re: [OSL | CCIE_Voice] ntp
the question was asked to sny hq with UTC server at 157.26.1.100 , and then syn cucm from hq router. when i did this command below: ntp master ntp source lo0 ntp server 157.26.1.100 i found out that UTC was set at stratum 16. so there was no way for me to set hq at a higer statum than the stratum at UTC server. so i was confused on wat to do here because hq router has to be an ntp master in order to provide clocking, but when i put the NTP master comand it will make Hq router syn the clock from itself; and it will never syn with the UTC server.. I new that for a router to provide clocking it has to be a master.. but this question through me off.. i was confused alot here that is why i brought this up. even thought without the NTp master command the Hq router can syn the clock from the UTC server, but It is not providing the clock to the cucm because it is not a master.. I guest the question was said wrong.. I didnt know if i should have raise a flag or not.. so at the moment Hq is only syning the clock from the UTC server but not providing the clock to UTC. Some one may run into this issue too.. It really killed some of my time. i was total upset about this. From: Ashraf Ayyash ash.ayy...@gmail.com To: Mini Me cciev.min...@gmail.com Cc: Ray jonha...@yahoo.com; ccie voice ccie_voice@onlinestudylist.com Sent: Sunday, September 18, 2011 8:31 AM Subject: Re: [OSL | CCIE_Voice] ntp okay thanks for the clarification but can you please explain the principle or the logic behind that ? if the router is not master it cannot provide clocking how its working then ? please clarify Ash On Sun, Sep 18, 2011 at 6:27 AM, Mini Me cciev.min...@gmail.com wrote: Yes I did when I was studying and it works.Make sure the HQ router syncs with external NTP . I passed and no longer have a lab to send you output. Sorry about that. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 06:24:06 -0700 To: Prashant Patel cciev.min...@gmail.com Cc: Ray jonha...@yahoo.com, ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp you are able to sync with out the master command to the HQ router ? can you get show ntp status assoc please ? On Sun, Sep 18, 2011 at 6:21 AM, Mini Me cciev.min...@gmail.com wrote: Hi Ashraf, You will still be able to sync time without the master command. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 02:28:12 -0700 To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp Hi all , if we took off the master command we will not be able to sync our internal network entities to the HQ router , please feel free to correct me if i am wrong , the output you gave Ray for the first email and the config say that you have added the master command before you synced with the external ntp and so your internal router got the highest level , to get rid of this you can configure the ntp server and then make sure that you are synced and then use the master command with lower stratum level and this should do the trick for you , below the link : http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1004877 Ash On Sat, Sep 17, 2011 at 11:35 PM, Ray jonha...@yahoo.com wrote: i found the issue , i took out the ntp master and then shut down/ no shut my f0/0 connecting to the UTC server, and the clock was syncing as below.. good hq#sh ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100 127.127.1.1 15 63 64 377 0.000 2901006 3.641 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho run | s ntp ntp source Loopback0 ntp server 157.26.1.100 --- On Sat, 9/17/11, Marko Milivojevic mar...@ipexpert.comwrote: From: Marko Milivojevic mar...@ipexpert.com Subject: Re: [OSL | CCIE_Voice] ntp To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Date: Saturday, September 17, 2011, 11:44 PM Why did you configure your router to be NTP master? When you did that, on which stratum did your router operate? If it was less than 15, will it sync to a server on stratum 15? Answer these questions and you'll know the answer to yours :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: mar...@ipexpert.com Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Sat, Sep 17, 2011 at 18:14, Ray jonha...@yahoo.com wrote: looking at the sho ntp ass below and the config below. I could not make the Hq router syn its time from 1567.26.1.100. this question troubled me when i took the exams. any idea!!!.. the UTC server at 157.26.1.100 was set to stratum 15 i think... so how can u make HQ syn time from the UTC server... I was confused here.. ntp source Loopback0 ntp master ntp server
Re: [OSL | CCIE_Voice] ntp
hqen hq#sho ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100 127.127.1.1 15 54 64 377 0.000 -4.488 4.467 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq# hq# hq# hq# hq#sho ntp clo hq#sho ntp st hq#sho ntp status Clock is synchronized, stratum 16, reference is 157.26.1.100 nominal freq is 250. Hz, actual freq is 250.0005 Hz, precision is 2**24 reference time is D2207921.9594D724 (23:05:21.584 SDT Sun Sep 18 2011) clock offset is -0.0045 msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.01989 s/s system poll interval is 64, last update was 1 sec ago. hq# From: Mini Me cciev.min...@gmail.com To: Ashraf Ayyash ash.ayy...@gmail.com Cc: Ray jonha...@yahoo.com; ccie voice ccie_voice@onlinestudylist.com Sent: Sunday, September 18, 2011 8:35 AM Subject: Re: [OSL | CCIE_Voice] ntp It will work as an ntp source as long as it is synced with an ntp server. The master command only changes the stratum of the ntp source. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 06:31:51 -0700 To: Prashant Patel cciev.min...@gmail.com Cc: Ray jonha...@yahoo.com, ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp okay thanks for the clarification but can you please explain the principle or the logic behind that ? if the router is not master it cannot provide clocking how its working then ? please clarify Ash On Sun, Sep 18, 2011 at 6:27 AM, Mini Me cciev.min...@gmail.com wrote: Yes I did when I was studying and it works.Make sure the HQ router syncs with external NTP . I passed and no longer have a lab to send you output. Sorry about that. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 06:24:06 -0700 To: Prashant Patel cciev.min...@gmail.com Cc: Ray jonha...@yahoo.com, ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp you are able to sync with out the master command to the HQ router ? can you get show ntp status assoc please ? On Sun, Sep 18, 2011 at 6:21 AM, Mini Me cciev.min...@gmail.com wrote: Hi Ashraf, You will still be able to sync time without the master command. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 02:28:12 -0700 To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp Hi all , if we took off the master command we will not be able to sync our internal network entities to the HQ router , please feel free to correct me if i am wrong , the output you gave Ray for the first email and the config say that you have added the master command before you synced with the external ntp and so your internal router got the highest level , to get rid of this you can configure the ntp server and then make sure that you are synced and then use the master command with lower stratum level and this should do the trick for you , below the link : http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1004877 Ash On Sat, Sep 17, 2011 at 11:35 PM, Ray jonha...@yahoo.com wrote: i found the issue , i took out the ntp master and then shut down/ no shut my f0/0 connecting to the UTC server, and the clock was syncing as below.. good hq#sh ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100 127.127.1.1 15 63 64 377 0.000 2901006 3.641 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho run | s ntp ntp source Loopback0 ntp server 157.26.1.100 --- On Sat, 9/17/11, Marko Milivojevic mar...@ipexpert.comwrote: From: Marko Milivojevic mar...@ipexpert.com Subject: Re: [OSL | CCIE_Voice] ntp To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Date: Saturday, September 17, 2011, 11:44 PM Why did you configure your router to be NTP master? When you did that, on which stratum did your router operate? If it was less than 15, will it sync to a server on stratum 15? Answer these questions and you'll know the answer to yours :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: mar...@ipexpert.com Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Sat, Sep 17, 2011 at 18:14, Ray jonha...@yahoo.com wrote: looking at the sho ntp ass below and the config below. I could not make the Hq router syn its time from 1567.26.1.100. this question troubled me when i took the exams. any idea!!!.. the UTC server at 157.26.1.100 was set to stratum 15 i think... so how can u make HQ syn time from the UTC server... I was confused here.. ntp source Loopback0 ntp master ntp server 157.26.1.100 hq#sho ntp ass address
Re: [OSL | CCIE_Voice] ntp
oh my god.. i think the trick is the do ntp server 157.26.1.100 first.. and wait for it to syn. then you add ntp master 6(or any stratum).. it work see the output below. but i will reboot the router and see it it still works when i comes back on... see the out put below. this is terrific.. oh my god.. ccsrv#clear line 34 [confirm] [OK] accsrv#r2 Translating r2...domain server (4.2.2.2) Trying R2 (1.1.1.1, 2034)... Open hqen hq#sho ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100 127.127.1.1 15 54 64 377 0.000 -4.488 4.467 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq# hq# hq# hq# hq#sho ntp clo hq#sho ntp st hq#sho ntp status Clock is synchronized, stratum 16, reference is 157.26.1.100 nominal freq is 250. Hz, actual freq is 250.0005 Hz, precision is 2**24 reference time is D2207921.9594D724 (23:05:21.584 SDT Sun Sep 18 2011) clock offset is -0.0045 msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.01989 s/s system poll interval is 64, last update was 1 sec ago. hq# hq# hq# hq#conf t Enter configuration commands, one per line. End with CNTL/Z. hq(config)#ntp mas hq(config)#ntp master 6 hq(config)#end hq# Sep 18 14:06:27.005: %SYS-5-CONFIG_I: Configured from console by console hq# hq# hq#sho ntp status Clock is synchronized, stratum 16, reference is 157.26.1.100 nominal freq is 250. Hz, actual freq is 250.0005 Hz, precision is 2**24 reference time is D2207921.9594D724 (23:05:21.584 SDT Sun Sep 18 2011) clock offset is -0.0045 msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.01989 s/s system poll interval is 64, last update was 73 sec ago. hq#sho ntp ass hq#sho ntp associations address ref clock st when poll reach delay offset disp ~127.127.1.1 .LOCL. 5 - 16 0 0.000 0.000 16000. *~157.26.1.100 127.127.1.1 15 21 64 377 0.000 -4.524 3.551 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#conf t Enter configuration commands, one per line. End with CNTL/Z. hq(config)#inter f0/0 hq(config-if)#shut hq(config-if)# Sep 18 14:07:02.465: %OSPF-5-ADJCHG: Process 1, Nbr 10.11.11.70 on FastEthernet0/0.1 from FULL to DOWN, Neighbor Down: Interface down or detached Sep 18 14:07:02.465: %OSPF-5-ADJCHG: Process 1, Nbr 67.246.98.116 on FastEthernet0/0.1 from FULL to DOWN, Neighbor Down: Interface down or detached Sep 18 14:07:04.457: %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to administratively down Sep 18 14:07:05.457: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to down hq(config-if)# hq(config-if)#no shut hq(config-if)#end hq# Sep 18 14:07:11.725: %SYS-5-CONFIG_I: Configured from console by console hq# hq# Sep 18 14:07:12.025: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up Sep 18 14:07:13.025: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up hq#sho ntp associations address ref clock st when poll reach delay offset disp ~127.127.1.1 .LOCL. 5 6 16 3 0.000 0.000 3937.5 *~157.26.1.100 127.127.1.1 15 59 64 377 0.000 -4.524 3.551 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho ntp status Clock is synchronized, stratum 16, reference is 157.26.1.100 nominal freq is 250. Hz, actual freq is 250.0005 Hz, precision is 2**24 reference time is D2207921.9594D724 (23:05:21.584 SDT Sun Sep 18 2011) clock offset is -0.0045 msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.01989 s/s system poll interval is 64, last update was 132 sec ago. hq#sho ntp associations address ref clock st when poll reach delay offset disp ~127.127.1.1 .LOCL. 5 2 16 7 0.000 0.000 1937.6 *~157.26.1.100 127.127.1.1 15 72 64 376 0.000 -4.524 3.551 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq# Sep 18 14:07:55.769: %OSPF-5-ADJCHG: Process 1, Nbr 10.11.11.70 on FastEthernet0/0.1 from LOADING to FULL, Loading Done Sep 18 14:07:55.773: %OSPF-5-ADJCHG: Process 1, Nbr 67.246.98.116 on FastEthernet0/0.1 from LOADING to FULL, Loading Done From: Ashraf Ayyash ash.ayy...@gmail.com To: Mini Me cciev.min...@gmail.com Cc: Ray jonha...@yahoo.com; ccie voice ccie_voice@onlinestudylist.com Sent: Sunday, September 18, 2011 8:55 AM Subject: Re: [OSL | CCIE_Voice] ntp thats intersting info , can you please let me know if this is docmented anywhere
Re: [OSL | CCIE_Voice] ntp
yeah , this is correct, thats what ive been talking about :) sorry for what happened in your lab , as this is a CCIE level exam i don't believe personally that any Book in the world can give or provide the exam Questions no matter how come the people who wrote the book got the Questions from , i think they can give the way of the Questions in the exam but we really need to have deep understand of how things working in order to avoid/fix just like the one you faced or shared Ash On Sun, Sep 18, 2011 at 6:59 AM, Ray jonha...@yahoo.com wrote: hqen hq#sho ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100127.127.1.1 15 54 64 377 0.000 -4.488 4.467 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq# hq# hq# hq# hq#sho ntp clo hq#sho ntp st hq#sho ntp status Clock is synchronized, stratum 16, reference is 157.26.1.100 nominal freq is 250. Hz, actual freq is 250.0005 Hz, precision is 2**24 reference time is D2207921.9594D724 (23:05:21.584 SDT Sun Sep 18 2011) clock offset is -0.0045 msec, root delay is 0.00 msec root dispersion is 0.00 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.01989 s/s system poll interval is 64, last update was 1 sec ago. hq# -- *From:* Mini Me cciev.min...@gmail.com *To:* Ashraf Ayyash ash.ayy...@gmail.com *Cc:* Ray jonha...@yahoo.com; ccie voice ccie_voice@onlinestudylist.com *Sent:* Sunday, September 18, 2011 8:35 AM *Subject:* Re: [OSL | CCIE_Voice] ntp It will work as an ntp source as long as it is synced with an ntp server. The master command only changes the stratum of the ntp source. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 06:31:51 -0700 To: Prashant Patel cciev.min...@gmail.com Cc: Ray jonha...@yahoo.com, ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp okay thanks for the clarification but can you please explain the principle or the logic behind that ? if the router is not master it cannot provide clocking how its working then ? please clarify Ash On Sun, Sep 18, 2011 at 6:27 AM, Mini Me cciev.min...@gmail.com wrote: Yes I did when I was studying and it works.Make sure the HQ router syncs with external NTP . I passed and no longer have a lab to send you output. Sorry about that. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 06:24:06 -0700 To: Prashant Patel cciev.min...@gmail.com Cc: Ray jonha...@yahoo.com, ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp you are able to sync with out the master command to the HQ router ? can you get show ntp status assoc please ? On Sun, Sep 18, 2011 at 6:21 AM, Mini Me cciev.min...@gmail.com wrote: Hi Ashraf, You will still be able to sync time without the master command. HTH From: Ashraf Ayyash ash.ayy...@gmail.com Date: Sun, 18 Sep 2011 02:28:12 -0700 To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] ntp Hi all , if we took off the master command we will not be able to sync our internal network entities to the HQ router , please feel free to correct me if i am wrong , the output you gave Ray for the first email and the config say that you have added the master command before you synced with the external ntp and so your internal router got the highest level , to get rid of this you can configure the ntp server and then make sure that you are synced and then use the master command with lower *stratum level and this should do the trick for you , below the link : http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1004877 Ash * On Sat, Sep 17, 2011 at 11:35 PM, Ray jonha...@yahoo.com wrote: i found the issue , i took out the ntp master and then shut down/ no shut my f0/0 connecting to the UTC server, and the clock was syncing as below.. good hq#sh ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100127.127.1.1 15 63 64 377 0.000 2901006 3.641 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho run | s ntp ntp source Loopback0 ntp server 157.26.1.100 --- On *Sat, 9/17/11, Marko Milivojevic mar...@ipexpert.com* wrote: From: Marko Milivojevic mar...@ipexpert.com Subject: Re: [OSL | CCIE_Voice] ntp To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Date: Saturday, September 17, 2011, 11:44 PM Why did you configure your router to be NTP master? When you did that, on which stratum did your router operate? If it was less than 15, will it sync to a server on stratum 15? Answer these questions and you'll know the answer to yours :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert
Re: [OSL | CCIE_Voice] ntp
i have read this note but it didn't stated that the router can provide clock without master command , in here we have one ntp source in our network which is the HQ (from all the network entities ) and HQ is getting clock from external NTP , Ray , can you please try what guys suggest here ? Ash On Sun, Sep 18, 2011 at 8:11 AM, Michael Luo hout...@gmail.com wrote: We should not use ntp master on HQ router. This command is only needed if the router cannot reach any NTP source. Since the HQ router can reach the backbone (PSTN) router, it does not require ntp master. If you look at the link, you'll notice this note: === Use this command with extreme caution. It is very easy to override valid time sources using this command, especially if a low stratum number is configured. Configuring multiple machines in the same network with the *ntp master* command can cause instability in timekeeping if the machines do not agree on the time. === Michael On Sun, Sep 18, 2011 at 4:28 AM, Ashraf Ayyash ash.ayy...@gmail.comwrote: Hi all , if we took off the master command we will not be able to sync our internal network entities to the HQ router , please feel free to correct me if i am wrong , the output you gave Ray for the first email and the config say that you have added the master command before you synced with the external ntp and so your internal router got the highest level , to get rid of this you can configure the ntp server and then make sure that you are synced and then use the master command with lower *stratum level and this should do the trick for you , below the link : http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1004877 Ash * On Sat, Sep 17, 2011 at 11:35 PM, Ray jonha...@yahoo.com wrote: i found the issue , i took out the ntp master and then shut down/ no shut my f0/0 connecting to the UTC server, and the clock was syncing as below.. good hq#sh ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100127.127.1.1 15 63 64 377 0.000 2901006 3.641 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho run | s ntp ntp source Loopback0 ntp server 157.26.1.100 --- On *Sat, 9/17/11, Marko Milivojevic mar...@ipexpert.com* wrote: From: Marko Milivojevic mar...@ipexpert.com Subject: Re: [OSL | CCIE_Voice] ntp To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Date: Saturday, September 17, 2011, 11:44 PM Why did you configure your router to be NTP master? When you did that, on which stratum did your router operate? If it was less than 15, will it sync to a server on stratum 15? Answer these questions and you'll know the answer to yours :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: mar...@ipexpert.com http://mc/compose?to=mar...@ipexpert.com Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Sat, Sep 17, 2011 at 18:14, Ray jonha...@yahoo.comhttp://mc/compose?to=jonha...@yahoo.com wrote: looking at the sho ntp ass below and the config below. I could not make the Hq router syn its time from 1567.26.1.100. this question troubled me when i took the exams. any idea!!!.. the UTC server at 157.26.1.100 was set to stratum 15 i think... so how can u make HQ syn time from the UTC server... I was confused here.. ntp source Loopback0 ntp master ntp server 157.26.1.100 hq#sho ntp ass address ref clock st when poll reach delay offset disp *~127.127.1.1 .LOCL. 7 12 16 377 0.000 0.000 0.238 ~157.26.1.10078.85.76.76 16 34 64 376 0.000 2901016 2.591 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
Take a look at this link: http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1001926 The two examples explain when you'll need ntp master. Hope this helps! Michael On Sun, Sep 18, 2011 at 10:14 AM, Ashraf Ayyash ash.ayy...@gmail.comwrote: i have read this note but it didn't stated that the router can provide clock without master command , in here we have one ntp source in our network which is the HQ (from all the network entities ) and HQ is getting clock from external NTP , Ray , can you please try what guys suggest here ? Ash On Sun, Sep 18, 2011 at 8:11 AM, Michael Luo hout...@gmail.com wrote: We should not use ntp master on HQ router. This command is only needed if the router cannot reach any NTP source. Since the HQ router can reach the backbone (PSTN) router, it does not require ntp master. If you look at the link, you'll notice this note: === Use this command with extreme caution. It is very easy to override valid time sources using this command, especially if a low stratum number is configured. Configuring multiple machines in the same network with the *ntp master* command can cause instability in timekeeping if the machines do not agree on the time. === Michael On Sun, Sep 18, 2011 at 4:28 AM, Ashraf Ayyash ash.ayy...@gmail.comwrote: Hi all , if we took off the master command we will not be able to sync our internal network entities to the HQ router , please feel free to correct me if i am wrong , the output you gave Ray for the first email and the config say that you have added the master command before you synced with the external ntp and so your internal router got the highest level , to get rid of this you can configure the ntp server and then make sure that you are synced and then use the master command with lower *stratum level and this should do the trick for you , below the link : http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1004877 Ash * On Sat, Sep 17, 2011 at 11:35 PM, Ray jonha...@yahoo.com wrote: i found the issue , i took out the ntp master and then shut down/ no shut my f0/0 connecting to the UTC server, and the clock was syncing as below.. good hq#sh ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100127.127.1.1 15 63 64 377 0.000 2901006 3.641 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho run | s ntp ntp source Loopback0 ntp server 157.26.1.100 --- On *Sat, 9/17/11, Marko Milivojevic mar...@ipexpert.com* wrote: From: Marko Milivojevic mar...@ipexpert.com Subject: Re: [OSL | CCIE_Voice] ntp To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Date: Saturday, September 17, 2011, 11:44 PM Why did you configure your router to be NTP master? When you did that, on which stratum did your router operate? If it was less than 15, will it sync to a server on stratum 15? Answer these questions and you'll know the answer to yours :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: mar...@ipexpert.com http://mc/compose?to=mar...@ipexpert.com Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Sat, Sep 17, 2011 at 18:14, Ray jonha...@yahoo.comhttp://mc/compose?to=jonha...@yahoo.com wrote: looking at the sho ntp ass below and the config below. I could not make the Hq router syn its time from 1567.26.1.100. this question troubled me when i took the exams. any idea!!!.. the UTC server at 157.26.1.100 was set to stratum 15 i think... so how can u make HQ syn time from the UTC server... I was confused here.. ntp source Loopback0 ntp master ntp server 157.26.1.100 hq#sho ntp ass address ref clock st when poll reach delay offset disp *~127.127.1.1 .LOCL. 7 12 16 377 0.000 0.000 0.238 ~157.26.1.10078.85.76.76 16 34 64 376 0.000 2901016 2.591 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more
Re: [OSL | CCIE_Voice] ntp
Thank you Michael , lets wait for Ray to check the lab results for this Ash On Sun, Sep 18, 2011 at 8:19 AM, Michael Luo hout...@gmail.com wrote: Take a look at this link: http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1001926 The two examples explain when you'll need ntp master. Hope this helps! Michael On Sun, Sep 18, 2011 at 10:14 AM, Ashraf Ayyash ash.ayy...@gmail.comwrote: i have read this note but it didn't stated that the router can provide clock without master command , in here we have one ntp source in our network which is the HQ (from all the network entities ) and HQ is getting clock from external NTP , Ray , can you please try what guys suggest here ? Ash On Sun, Sep 18, 2011 at 8:11 AM, Michael Luo hout...@gmail.com wrote: We should not use ntp master on HQ router. This command is only needed if the router cannot reach any NTP source. Since the HQ router can reach the backbone (PSTN) router, it does not require ntp master. If you look at the link, you'll notice this note: === Use this command with extreme caution. It is very easy to override valid time sources using this command, especially if a low stratum number is configured. Configuring multiple machines in the same network with the *ntp master* command can cause instability in timekeeping if the machines do not agree on the time. === Michael On Sun, Sep 18, 2011 at 4:28 AM, Ashraf Ayyash ash.ayy...@gmail.comwrote: Hi all , if we took off the master command we will not be able to sync our internal network entities to the HQ router , please feel free to correct me if i am wrong , the output you gave Ray for the first email and the config say that you have added the master command before you synced with the external ntp and so your internal router got the highest level , to get rid of this you can configure the ntp server and then make sure that you are synced and then use the master command with lower *stratum level and this should do the trick for you , below the link : http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1004877 Ash * On Sat, Sep 17, 2011 at 11:35 PM, Ray jonha...@yahoo.com wrote: i found the issue , i took out the ntp master and then shut down/ no shut my f0/0 connecting to the UTC server, and the clock was syncing as below.. good hq#sh ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100127.127.1.1 15 63 64 377 0.000 2901006 3.641 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho run | s ntp ntp source Loopback0 ntp server 157.26.1.100 --- On *Sat, 9/17/11, Marko Milivojevic mar...@ipexpert.com* wrote: From: Marko Milivojevic mar...@ipexpert.com Subject: Re: [OSL | CCIE_Voice] ntp To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Date: Saturday, September 17, 2011, 11:44 PM Why did you configure your router to be NTP master? When you did that, on which stratum did your router operate? If it was less than 15, will it sync to a server on stratum 15? Answer these questions and you'll know the answer to yours :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: mar...@ipexpert.com http://mc/compose?to=mar...@ipexpert.com Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Sat, Sep 17, 2011 at 18:14, Ray jonha...@yahoo.comhttp://mc/compose?to=jonha...@yahoo.com wrote: looking at the sho ntp ass below and the config below. I could not make the Hq router syn its time from 1567.26.1.100. this question troubled me when i took the exams. any idea!!!.. the UTC server at 157.26.1.100 was set to stratum 15 i think... so how can u make HQ syn time from the UTC server... I was confused here.. ntp source Loopback0 ntp master ntp server 157.26.1.100 hq#sho ntp ass address ref clock st when poll reach delay offset disp *~127.127.1.1 .LOCL. 7 12 16 377 0.000 0.000 0.238 ~157.26.1.10078.85.76.76 16 34 64 376 0.000 2901016 2.591 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit
Re: [OSL | CCIE_Voice] ntp
are synced and then use the master command with lower stratum level and this should do the trick for you , below the link : http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1004877 Ash On Sat, Sep 17, 2011 at 11:35 PM, Ray jonha...@yahoo.com wrote: i found the issue , i took out the ntp master and then shut down/ no shut my f0/0 connecting to the UTC server, and the clock was syncing as below.. good hq#sh ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100127.127.1.1 15 63 64 377 0.000 2901006 3.641 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho run | s ntp ntp source Loopback0 ntp server 157.26.1.100 --- On Sat, 9/17/11, Marko Milivojevic mar...@ipexpert.com wrote: From: Marko Milivojevic mar...@ipexpert.com Subject: Re: [OSL | CCIE_Voice] ntp To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Date: Saturday, September 17, 2011, 11:44 PM Why did you configure your router to be NTP master? When you did that, on which stratum did your router operate? If it was less than 15, will it sync to a server on stratum 15? Answer these questions and you'll know the answer to yours :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: mar...@ipexpert.com Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Sat, Sep 17, 2011 at 18:14, Ray jonha...@yahoo.com wrote: looking at the sho ntp ass below and the config below. I could not make the Hq router syn its time from 1567.26.1.100. this question troubled me when i took the exams. any idea!!!.. the UTC server at 157.26.1.100 was set to stratum 15 i think... so how can u make HQ syn time from the UTC server... I was confused here.. ntp source Loopback0 ntp master ntp server 157.26.1.100 hq#sho ntp ass address ref clock st when poll reach delay offset disp *~127.127.1.1 .LOCL. 7 12 16 377 0.000 0.000 0.238 ~157.26.1.10078.85.76.76 16 34 64 376 0.000 2901016 2.591 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
final conclusion with the NTP issue.. I found out that if there is no ntp master command CUCM will never syn with HQ router.. the moment i added ntp master it syns right the way, but Hq is only getting the clock from itself not from the UTC. some one can try this and lets see. I spend the whole day on this.. I think the question was set wrong. I would raise a red flag if i see this question anywhere. 142.1.64.254 The NTP service not accessible. hq#sho ntp st Clock is synchronized, stratum 16, reference is 157.26.1.100 nominal freq is 250. Hz, actual freq is 250.0007 Hz, precision is 2**24 reference time is D220FBD3.3C663F3F (16:22:59.235 SDT Sun Sep 18 2011) clock offset is -0.0037 msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.02808 s/s system poll interval is 64, last update was 359 sec ago. hq#sho ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100 127.127.1.1 15 48 64 377 0.000 -3.764 3.994 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq# From: Ashraf Ayyash ash.ayy...@gmail.com To: Michael Luo hout...@gmail.com Cc: Ray jonha...@yahoo.com; ccie voice ccie_voice@onlinestudylist.com Sent: Sunday, September 18, 2011 10:21 AM Subject: Re: [OSL | CCIE_Voice] ntp Thank you Michael , lets wait for Ray to check the lab results for this Ash On Sun, Sep 18, 2011 at 8:19 AM, Michael Luo hout...@gmail.com wrote: Take a look at this link: http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1001926 The two examples explain when you'll need ntp master. Hope this helps! Michael On Sun, Sep 18, 2011 at 10:14 AM, Ashraf Ayyash ash.ayy...@gmail.com wrote: i have read this note but it didn't stated that the router can provide clock without master command , in here we have one ntp source in our network which is the HQ (from all the network entities ) and HQ is getting clock from external NTP , Ray , can you please try what guys suggest here ? Ash On Sun, Sep 18, 2011 at 8:11 AM, Michael Luo hout...@gmail.com wrote: We should not use ntp master on HQ router. This command is only needed if the router cannot reach any NTP source. Since the HQ router can reach the backbone (PSTN) router, it does not require ntp master. If you look at the link, you'll notice this note: === Use this command with extreme caution. It is very easy to override valid time sources using this command, especially if a low stratum number is configured. Configuring multiple machines in the same network with the ntp master command can cause instability in timekeeping if the machines do not agree on the time. === Michael On Sun, Sep 18, 2011 at 4:28 AM, Ashraf Ayyash ash.ayy...@gmail.com wrote: Hi all , if we took off the master command we will not be able to sync our internal network entities to the HQ router , please feel free to correct me if i am wrong , the output you gave Ray for the first email and the config say that you have added the master command before you synced with the external ntp and so your internal router got the highest level , to get rid of this you can configure the ntp server and then make sure that you are synced and then use the master command with lower stratum level and this should do the trick for you , below the link : http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1004877 Ash On Sat, Sep 17, 2011 at 11:35 PM, Ray jonha...@yahoo.com wrote: i found the issue , i took out the ntp master and then shut down/ no shut my f0/0 connecting to the UTC server, and the clock was syncing as below.. good hq#sh ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100 127.127.1.1 15 63 64 377 0.000 2901006 3.641 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq#sho run | s ntp ntp source Loopback0 ntp server 157.26.1.100 --- On Sat, 9/17/11, Marko Milivojevic mar...@ipexpert.comwrote: From: Marko Milivojevic mar...@ipexpert.com Subject: Re: [OSL | CCIE_Voice] ntp To: Ray jonha...@yahoo.com Cc: ccie voice ccie_voice@onlinestudylist.com Date: Saturday, September 17, 2011, 11:44 PM Why did you configure your router to be NTP master? When you did that, on which stratum did your router operate? If it was less than 15, will it sync to a server on stratum 15? Answer these questions and you'll know the answer to yours :-) -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert FREE CCIE training: http://bit.ly/vLecture Mailto: mar...@ipexpert.com Telephone: +1.810.326.1444 Web: http://www.ipexpert.com/ On Sat, Sep 17, 2011 at 18:14, Ray jonha...@yahoo.com wrote: looking at the sho ntp ass below and the config
Re: [OSL | CCIE_Voice] ntp
NTP is by nature slow. An earlier post pointed out the correct method. If the question wants you to sync hq with the pstn and then ccm with hq then the ntp master command will break this requirement. All that is required on the HQ router is ntp server x.x.x.x This is also mentioned in Vic's class class as well as Cisco documentation. The important key here is that the ntp master command can cause you to override a valid external time source and thus can be very dangerous. As long as the ntp server command points to a valid and reachable ntp source then the hq router will sync and you WILL be able to sync ucm without the ntp master command. Justin Barksdale CCIE# 29866 Voice Sent from my iPhone 4. Please excuse any typos. On Sep 18, 2011, at 7:39 PM, ccie_voice-requ...@onlinestudylist.com wrote: Re: [OSL | CCIE_Voice] ntp ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
reboot the CUCM and the HQ and see if they still syn again.. let me know.. I had to reboot after each test and see if it can still syn.. From: Bill Lake whl...@gmail.com To: Ray jonha...@yahoo.com Sent: Sunday, September 18, 2011 9:26 PM Subject: Re: [OSL | CCIE_Voice] ntp No trouble getting this CUCM publisher to sync with a router running only the ntp server command. Here is the output of the HQ router that is syncing via the PSTN router with the ntp server 10.10.100.2 command. Then you can see that the CUCM is sycn'd to the HQ router and again that router does not have the ntp master command. HQ-RTR#show ntp status Clock is synchronized, stratum 5, reference is 10.10.100.2 nominal freq is 250. Hz, actual freq is 249.9642 Hz, precision is 2**24 reference time is D2211AD5.E25CC1BA (01:35:17.884 UTC Mon Sep 19 2011) clock offset is 0. msec, root delay is 0.00 msec root dispersion is 0.02 msec, peer dispersion is 0.01 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000143188 s/s system poll interval is 1024, last update was 419 sec ago. HQ-RTR#show run | inc ntp ntp server 10.10.100.2 HQ-RTR# Here is the CUCM getting NTP time from the HQ router on an Ethernet port admin:utils ntp status ntpd (pid 6982) is running... remote refid st t when poll reach delay offset jitter == *192.168.0.90 10.10.100.2 5 u 24 64 1 1.356 -0.254 0.018 synchronised to NTP server (192.168.0.90) at stratum 6 time correct to within 30 ms polling server every 64 s Current time in UTC is : Mon Sep 19 01:41:41 UTC 2011 Current time in America/Chicago is : Sun Sep 18 20:41:41 CDT 2011 admin: So maybe there is something else going on but I have never had any trouble getting my CUCM to sync to a router even when it is only running ntp server. On Sun, Sep 18, 2011 at 6:39 PM, Ray jonha...@yahoo.com wrote: final conclusion with the NTP issue.. I found out that if there is no ntp master command CUCM will never syn with HQ router.. the moment i added ntp master it syns right the way, but Hq is only getting the clock from itself not from the UTC. some one can try this and lets see. I spend the whole day on this.. I think the question was set wrong. I would raise a red flag if i see this question anywhere. 142.1.64.254 The NTP service not accessible. hq#sho ntp st Clock is synchronized, stratum 16, reference is 157.26.1.100 nominal freq is 250. Hz, actual freq is 250.0007 Hz, precision is 2**24 reference time is D220FBD3.3C663F3F (16:22:59.235 SDT Sun Sep 18 2011) clock offset is -0.0037 msec, root delay is 0.00 msec root dispersion is 0.01 msec, peer dispersion is 0.00 msec loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.02808 s/s system poll interval is 64, last update was 359 sec ago. hq#sho ntp ass address ref clock st when poll reach delay offset disp *~157.26.1.100 127.127.1.1 15 48 64 377 0.000 -3.764 3.994 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured hq# From: Ashraf Ayyash ash.ayy...@gmail.com To: Michael Luo hout...@gmail.com Cc: Ray jonha...@yahoo.com; ccie voice ccie_voice@onlinestudylist.com Sent: Sunday, September 18, 2011 10:21 AM Subject: Re: [OSL | CCIE_Voice] ntp Thank you Michael , lets wait for Ray to check the lab results for this Ash On Sun, Sep 18, 2011 at 8:19 AM, Michael Luo hout...@gmail.com wrote: Take a look at this link: http://www.cisco.com/en/US/docs/ios/12_1/configfun/configuration/guide/fcd303.html#wp1001926 The two examples explain when you'll need ntp master. Hope this helps! Michael On Sun, Sep 18, 2011 at 10:14 AM, Ashraf Ayyash ash.ayy...@gmail.com wrote: i have read this note but it didn't stated that the router can provide clock without master command , in here we have one ntp source in our network which is the HQ (from all the network entities ) and HQ is getting clock from external NTP , Ray , can you please try what guys suggest here ? Ash On Sun, Sep 18, 2011 at 8:11 AM, Michael Luo hout...@gmail.com wrote: We should not use ntp master on HQ router. This command is only needed if the router cannot reach any NTP source. Since the HQ router can reach the backbone (PSTN) router, it does not require ntp master. If you look at the link, you'll notice this note: === Use this command with extreme caution. It is very easy to override valid time sources using this command, especially if a low stratum number is configured. Configuring multiple machines in the same network with the ntp master command can cause instability in timekeeping if the machines do not agree on the time. === Michael On Sun, Sep 18, 2011 at 4:28 AM, Ashraf Ayyash ash.ayy...@gmail.com wrote: Hi all , if we took
[OSL | CCIE_Voice] ntp
looking at the sho ntp ass below and the config below. I could not make the Hq router syn its time from 1567.26.1.100. this question troubled me when i took the exams. any idea!!!.. the UTC server at 157.26.1.100 was set to stratum 15 i think... so how can u make HQ syn time from the UTC server... I was confused here.. ntp source Loopback0 ntp master ntp server 157.26.1.100 hq#sho ntp ass address ref clock st when poll reach delay offset disp *~127.127.1.1 .LOCL. 7 12 16 377 0.000 0.000 0.238 ~157.26.1.100 78.85.76.76 16 34 64 376 0.000 2901016 2.591 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP
You might want to refrain from asking exact questions from the real exam. That said your issue is that you used two types of sync, one is to sync to an external source with the ntp server command and the internal clock source with ntp master. Since the internal clock source is local it will sync's faster than to the network source of the remote router and you will never learn the stratum of the network clock source. You could just use the ntp server command and it will allow other devices to sync to it without the ntp master command. Give it a try in your next lab. On Sat, Sep 17, 2011 at 7:55 PM, Ray jonha...@yahoo.com wrote: i had this wierd question in my real exams... they ask me to syn my NTP from the UTC server with the HQ. so i type the following command at the HQ router clock time pst -8 clock summer-time PDT recurring ntp server 157.26.1.253 ntp master then i did the show NTp association command. i found out that the clock was syncing with the HQ router itself not the UTC server. because the UTC server has the highest stratum of 16. so I didn't know how to make it syn the clock from the UTC server. any ideal is welcome. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] ntp
Have you tried removing the following commands no ntp source loopback 0 no ntp master Then set the clock on HQ to as close as you can to the UTC server. On Sat, Sep 17, 2011 at 8:14 PM, Ray jonha...@yahoo.com wrote: looking at the sho ntp ass below and the config below. I could not make the Hq router syn its time from 1567.26.1.100. this question troubled me when i took the exams. any idea!!!.. the UTC server at 157.26.1.100 was set to stratum 15 i think... so how can u make HQ syn time from the UTC server... I was confused here.. ntp source Loopback0 ntp master ntp server 157.26.1.100 hq#sho ntp ass address ref clock st when poll reach delay offset disp *~127.127.1.1 .LOCL. 7 12 16 377 0.000 0.000 0.238 ~157.26.1.10078.85.76.76 16 34 64 376 0.000 2901016 2.591 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP summer time
Thanks for the clarification. -adil On Sun, Jun 19, 2011 at 10:20 AM, Cristobal Priego cristobalpri...@gmail.com wrote: i think is just a label, EST, EDT or it could be whatever you want 2011/6/18 Adil Shaikh adil.sha...@gmail.com Hi All, Question regarding NTP summer time. I configure summertime as per IPexpert material: clock timezone EST -8 clock summer EST recurr However, many places i have seen this to be configured as: clock timezone EST -8 clock summer EDT recurr Which one shoud be done in exam? Any clue? thanks -adil -- .. . . _7___|___|_|_|adil.sha...@gmail.com . . ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com -- .. . . _7___|___|_|_|adil.sha...@gmail.com . . ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] NTP summer time
Hi All, Question regarding NTP summer time. I configure summertime as per IPexpert material: clock timezone EST -8 clock summer EST recurr However, many places i have seen this to be configured as: clock timezone EST -8 clock summer EDT recurr Which one shoud be done in exam? Any clue? thanks -adil -- .. . . _7___|___|_|_|adil.sha...@gmail.com . . ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP summer time
personally i do EST, EDT or PST, PDT 2011/6/18 Cristobal Priego cristobalpri...@gmail.com i think is just a label, EST, EDT or it could be whatever you want 2011/6/18 Adil Shaikh adil.sha...@gmail.com Hi All, Question regarding NTP summer time. I configure summertime as per IPexpert material: clock timezone EST -8 clock summer EST recurr However, many places i have seen this to be configured as: clock timezone EST -8 clock summer EDT recurr Which one shoud be done in exam? Any clue? thanks -adil -- .. . . _7___|___|_|_|adil.sha...@gmail.com . . ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP summer time
Clock timezone PST -8 would set the time to -8 hours from GMT and the PST stands for Pacific Standard Time. clock summer-time PDT recurring would add the hour used for Daylight savings time, in this case Pacific Daylight Time The only issue on this is knowing that they changed the dates this is active so you could be in trouble if your graded and the IOS does not do this properly automatically like it should. So recently in the US the start and end of Daylight Savings Time has changed and I do not believe that is reflected in the IOS used in the lab. Therefore you might want to know how to change dates to the proper ones before taking the exam. So for EST in US clock summer-time EDT recurring 2 SUN Mar 02:00 first SUN Nov 02:00 On Sat, Jun 18, 2011 at 5:56 PM, Adil Shaikh adil.sha...@gmail.com wrote: Hi All, Question regarding NTP summer time. I configure summertime as per IPexpert material: clock timezone EST -8 clock summer EST recurr However, many places i have seen this to be configured as: clock timezone EST -8 clock summer EDT recurr Which one shoud be done in exam? Any clue? thanks -adil -- .. . . _7___|___|_|_|adil.sha...@gmail.com . . ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP summer time
I think it is a typo Sent from my iPhone On Jun 18, 2011, at 3:56 PM, Adil Shaikh adil.sha...@gmail.com wrote: Hi All, Question regarding NTP summer time. I configure summertime as per IPexpert material: clock timezone EST -8 clock summer EST recurr However, many places i have seen this to be configured as: clock timezone EST -8 clock summer EDT recurr Which one shoud be done in exam? Any clue? thanks -adil -- .. . . _7___|___|_|_|adil.sha...@gmail.com . . ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP Concept
Hi , If the question says HQ-RTR should be synchronised with external NTP server. CUCM should be synchronised with HQ-RTR's Loopback0 or VLAN interface. My config on HQ RTR looks like : ntp server x.x.x.x external ntp server ntp source loopback0 clock timezone clock summertime recurring For BR1 RTR there is no mention in the question about wherei should synchronise the NTP, should i synchronise it with external NTP? Lets assume for BR1 i configure NTP as HQ RTR's Loopback 0 interface.Should i configure ntp source loopback 0 ? For BR 2 RTR there is no mention in the question about where i should synchronise the NTP, should i synchronise it with external NTP or can i synchronise it with the HQ RTR loopback IP? Need For NTP master on HQ-RTR is as below: If question says i need to configure NTP as HQ RTR loopback for CUE When i configure HQ-RTR (loopback 0) as the NTP server for CUE module, i would have to configure HQ RTR as an NTP master right? Can i configure CUE NTP as CME IP address, if yes in what instances can i configure it? Please do not print this email unless it is absolutely necessary. The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP Concept
if they don't tell you to configure NTP on Branch 1 is up to you if they're saying to source it from the loopback then issue the command ntp source loopback0 if they don't tell you anything is up to you you can use the CUE as an NTP, indeed is the default you can also use the HQ-RTR as an NTP source, in that case the ntp master command will be needed 2011/6/17 sandeep.ra...@wipro.com Hi , If the question says HQ-RTR should be synchronised with external NTP server. CUCM should be synchronised with HQ-RTR's Loopback0 or VLAN interface. My config on HQ RTR looks like : ntp server x.x.x.x external ntp server ntp source loopback0 clock timezone clock summertime recurring For BR1 RTR there is no mention in the question about wherei should synchronise the NTP, should i synchronise it with external NTP? Lets assume for BR1 i configure NTP as HQ RTR's Loopback 0 interface.Should i configure ntp source loopback 0 ? For BR 2 RTR there is no mention in the question about where i should synchronise the NTP, should i synchronise it with external NTP or can i synchronise it with the HQ RTR loopback IP? Need For NTP master on HQ-RTR is as below: If question says i need to configure NTP as HQ RTR loopback for CUE When i configure HQ-RTR (loopback 0) as the NTP server for CUE module, i would have to configure HQ RTR as an NTP master right? Can i configure CUE NTP as CME IP address, if yes in what instances can i configure it? * Please do not print this email unless it is absolutely necessary. * The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP on the lab
Hi, Any good way to figure out if any timezone has summer time using resources available on the lab? As I live in Europe I really don't know how it looks in Asia for example... -- Regards, Bartosz 2011/6/3 Roig Borrell, Francesc Xavier francesc.ro...@tecnocom.es Hi, For US you need configure HQ Ntp server xx.xx.xx.xx Clock timezone pst -8 Clock summertime pst recurring For Honkong Ntp server xx.xx.xx.xx Clock timezone hkg 8 Do no use recurring, China does not have savelight Verify the time the phones get checking the real time and the timezones http://www.worldtimeserver.com/ Francesc Xavier Roig Borrell Network Senior Consultant Integración de Sistemas y Tecnología C/Santander, 49-51 Barcelona 08020 Tel. Fijo: (+34) 934965108 ext 64697 Tel. Móvil / Fax: (+34) 647 32 21 55 (24697) / (+34) 934965161 email: francesc.ro...@tecnocom.es http://www.tecnocom.es *Por favor, antes de imprimir este mensaje, asegúrate de que es necesario. Ayudemos a cuidar el medio ambiente* *Este mensaje puede contener información confidencial o privilegiada. Si le ha llegado por error, rogamos no haga uso del mismo, avise al remitente y bórrelo. **Consulte **aviso legalhttp://www.tecnocom.es/Paginas/InformacionLegal.aspx * *This message may contain confidential or privileged information. If it has been sent to you in error, please do not use it, notify the sender of the error and delete it. **See **legal noticehttp://www.tecnocom.es/sites/en/Paginas/InformacionLegal.aspx * ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com image001.jpg___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] NTP on the lab
Hi, For US you need configure HQ Ntp server xx.xx.xx.xx Clock timezone pst -8 Clock summertime pst recurring For Honkong Ntp server xx.xx.xx.xx Clock timezone hkg 8 Do no use recurring, China does not have savelight Verify the time the phones get checking the real time and the timezones http://www.worldtimeserver.com/ [cid:image001.jpg@01CC2181.42F82C00] Francesc Xavier Roig Borrell Network Senior Consultant Integración de Sistemas y Tecnología C/Santander, 49-51 Barcelona 08020 Tel. Fijo: (+34) 934965108 ext 64697 Tel. Móvil / Fax: (+34) 647 32 21 55 (24697) / (+34) 934965161 email: francesc.ro...@tecnocom.esmailto:francesc.ro...@tecnocom.es http://www.tecnocom.eshttp://www.tecnocom.es/ Por favor, antes de imprimir este mensaje, asegúrate de que es necesario. Ayudemos a cuidar el medio ambiente Este mensaje puede contener información confidencial o privilegiada. Si le ha llegado por error, rogamos no haga uso del mismo, avise al remitente y bórrelo. Consulte aviso legalhttp://www.tecnocom.es/Paginas/InformacionLegal.aspx This message may contain confidential or privileged information. If it has been sent to you in error, please do not use it, notify the sender of the error and delete it. See legal noticehttp://www.tecnocom.es/sites/en/Paginas/InformacionLegal.aspx inline: image001.jpg___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP on the lab
will it be also valid to use the command ntp source lo0 for example ? or if you use the command above you risk the points ? 2011/6/2 Friderich Claude cfrider...@netcore.lu Check the time-zone they ask for and if this time-zone contains a daylight saving time (compare to the geographical sites), you have to put the clock summertime command as well. If this site doesn’t contain a Daylight Saving Time, not necessary to put this command ….. Normally you gonna find out on which site you have to …. Regards, [image: netcore_signature_4.jpg] *Claude FRIDERICH * PreSales Voice over IP * *** *[image: CCIEVoice_UseLogo]* CCIE Voice #29035 *O*ffice** +352 31 33 80 – 407** *M*obile ** +352 621 303 616** [image: cid:image003.jpg@01CC1F87.400817E0] *F*ax ** +352 31 33 80 412 *E*mail** *cfrider...@netcore.lu x...@netcore.lu*** *From:* ccie_voice-boun...@onlinestudylist.com [mailto: ccie_voice-boun...@onlinestudylist.com] *On Behalf Of *adam compton *Sent:* jeudi 2 juin 2011 02:32 *To:* ccie_voice@onlinestudylist.com *Subject:* [OSL | CCIE_Voice] NTP on the lab When I took the test last time I used the clock timezone command and the ntp server command to setup ntp. I did not get points for this question. If the question on the Lab doesn't say anything about clock summertime, should we throw the command in anyway on the routers? I know clock summertime without any options uses US daylight savings time dates, but not sure if those would apply to other timezones as well. As best I can tell, I've heard of Hong Kong and UK and US as sites. Regards, Adam Compton -- This email was Anti Virus checked. ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com image003.jpgimage004.jpgimage001.jpg___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP on the lab
Does it do anything without filling in the start date and end date? 2011/6/3 Roig Borrell, Francesc Xavier francesc.ro...@tecnocom.es Hi, For US you need configure HQ Ntp server xx.xx.xx.xx Clock timezone pst -8 Clock summertime pst recurring For Honkong Ntp server xx.xx.xx.xx Clock timezone hkg 8 Do no use recurring, China does not have savelight Verify the time the phones get checking the real time and the timezones http://www.worldtimeserver.com/ Francesc Xavier Roig Borrell Network Senior Consultant Integración de Sistemas y Tecnología C/Santander, 49-51 Barcelona 08020 Tel. Fijo: (+34) 934965108 ext 64697 Tel. Móvil / Fax: (+34) 647 32 21 55 (24697) / (+34) 934965161 email: francesc.ro...@tecnocom.es http://www.tecnocom.es *Por favor, antes de imprimir este mensaje, asegúrate de que es necesario. Ayudemos a cuidar el medio ambiente* *Este mensaje puede contener información confidencial o privilegiada. Si le ha llegado por error, rogamos no haga uso del mismo, avise al remitente y bórrelo. **Consulte **aviso legalhttp://www.tecnocom.es/Paginas/InformacionLegal.aspx * *This message may contain confidential or privileged information. If it has been sent to you in error, please do not use it, notify the sender of the error and delete it. **See **legal noticehttp://www.tecnocom.es/sites/en/Paginas/InformacionLegal.aspx * ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com image001.jpg___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
[OSL | CCIE_Voice] NTP on the lab
When I took the test last time I used the clock timezone command and the ntp server command to setup ntp. I did not get points for this question. If the question on the Lab doesn't say anything about clock summertime, should we throw the command in anyway on the routers? I know clock summertime without any options uses US daylight savings time dates, but not sure if those would apply to other timezones as well. As best I can tell, I've heard of Hong Kong and UK and US as sites. Regards, Adam Compton ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP on the lab
On Wed, Jun 1, 2011 at 9:43 PM, adam compton com...@gmail.com wrote: I had bad luck asking the proctor last time around. I told them I interpret wording that SCCP is used for registration and he just blew me off with whatever it says. i watch ipexpert and they say ask the proctor ask the proctor. Unless it's a typo, I don't think you are getting any help from the proctor in understanding a question. At least in RTP On Wed, Jun 1, 2011 at 9:40 PM, Adil Shaikh adil.sha...@gmail.com wrote: did 'show ntp status' showed synchronization? regarding summertime, i think it would be worth asking proctor. -adil On Thu, Jun 2, 2011 at 10:32 AM, adam compton com...@gmail.com wrote: When I took the test last time I used the clock timezone command and the ntp server command to setup ntp. I did not get points for this question. If the question on the Lab doesn't say anything about clock summertime, should we throw the command in anyway on the routers? I know clock summertime without any options uses US daylight savings time dates, but not sure if those would apply to other timezones as well. As best I can tell, I've heard of Hong Kong and UK and US as sites. Regards, Adam Compton ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com -- .. . . _7___|___|_|_|adil.sha...@gmail.com . . ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP on the lab
I haven't taken the lab yet but I would agree and only think the proctor can help if you are having a HW issue, informix Database issue or something like that rc From: adam compton com...@gmail.com To: ccie_voice@onlinestudylist.com ccie_voice@onlinestudylist.com Sent: Wednesday, June 1, 2011 6:43 PM Subject: Re: [OSL | CCIE_Voice] NTP on the lab On Wed, Jun 1, 2011 at 9:43 PM, adam compton com...@gmail.com wrote: I had bad luck asking the proctor last time around. I told them I interpret wording that SCCP is used for registration and he just blew me off with whatever it says. i watch ipexpert and they say ask the proctor ask the proctor. Unless it's a typo, I don't think you are getting any help from the proctor in understanding a question. At least in RTP On Wed, Jun 1, 2011 at 9:40 PM, Adil Shaikh adil.sha...@gmail.com wrote: did 'show ntp status' showed synchronization? regarding summertime, i think it would be worth asking proctor. -adil On Thu, Jun 2, 2011 at 10:32 AM, adam compton com...@gmail.com wrote: When I took the test last time I used the clock timezone command and the ntp server command to setup ntp. I did not get points for this question. If the question on the Lab doesn't say anything about clock summertime, should we throw the command in anyway on the routers? I know clock summertime without any options uses US daylight savings time dates, but not sure if those would apply to other timezones as well. As best I can tell, I've heard of Hong Kong and UK and US as sites. Regards, Adam Compton ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com -- . . . . _7___|___|_|_|adil.sha...@gmail.com . . ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
Re: [OSL | CCIE_Voice] NTP server
You don't need 3 ntp refrences in CCM, in fact a you do not need to configure any ntp reference unless you have SIP phones. In this case one NTP reference pointing to HQ (ntp server) For SCCP phone you need to synchronize the PUB with HQ router, different date time groups will define the offset for the sites Francesc De: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] En nombre de voice boy Enviado el: miércoles, 09 de febrero de 2011 5:47 Para: ccie_voice@onlinestudylist.com Asunto: [OSL | CCIE_Voice] NTP server Hi, - If we have cucm that have 3-sites registered in 3-different countries each have its own time zone,so I made the HQ router as ntp master and the other two as ntp clients On the call manager,I'll create 3-date time groups. Do I need to create 3-ntp references [one for each site] or only one ntp reference with the HQ master ip.add and select this for the 3-date time groups - Then what should be needed as ntp server inthe OS page - Also I found authentication command ntp authentication Why I would need this Thanks ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
[OSL | CCIE_Voice] NTP server
Hi, - If we have cucm that have 3-sites registered in 3-different countries each have its own time zone,so I made the HQ router as ntp master and the other two as ntp clients On the call manager,I'll create 3-date time groups. Do I need to create 3-ntp references [one for each site] or only one ntp reference with the HQ master ip.add and select this for the 3-date time groups - Then what should be needed as ntp server inthe OS page - Also I found authentication command ntp authentication Why I would need this Thanks ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] NTP
A router that has ntp server configured also acts as a server. You don't need ntp master to act as a server. Brian - Reply message - From: cisco voip voip.ccieci...@gmail.com Date: Thu, Jul 8, 2010 10:42 pm Subject: [OSL | CCIE_Voice] NTP To: Mark Holloway m...@markholloway.com Cc: OSL osl ccie_voice@onlinestudylist.com But ntp master command is necessary for the router to be able to be ntp server for anyone else. i agree about stratum chain, but without ntp master command publisher should not be able to get its clock. you can check show ntp associations on the router, after ntp master command only it will show you the local interface. now if you want to use the stratum to be 1 more from whatever the stratum is on actual source, you do not need stratum command, for anything else you need that commnd On Fri, Jul 9, 2010 at 4:42 AM, Mark Holloway m...@markholloway.com wrote: Cool, thanks Graham and Randall. On Jul 8, 2010, at 4:11 PM, Graham Hopkins wrote: Default stratum is 8 so a simple ntp master will work Graham On 8 Jul 2010, at 23:59, Mark Holloway m...@markholloway.com wrote: Yikes, I meant ntp master stratum X not ntp server stratum X On Jul 8, 2010, at 3:57 PM, Mark Holloway wrote: If a router (for example, HQ) is configured with the ntp server x.x.x.x command to sync time from another source, but I want another device (such as PUB) to get its time from the HQ router, do I also need to configure the HQ router with ntp server stratum X or can UCM simply get the time sync from HQ without the stratum command? ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] NTP
To identify the most accurate stratum, think of the stratum as the number of 'hops' from the master time source. ie: your publisher server is sync'd to your internal router; your internal router is sync'd to your Internet router; your Internet router is sync'd to a master time source on the net; that's three stratum 'hops' right there. A lowest 'root' master time source would use stratum 0. ie: Master = stratum 0 internet router = stratum 1 internal router = stratum 2 publisher = stratum 3 At this point, any device syncing to the publisher would use stratum 4. (or higher) Any device syncing to the internal router would use stratum 3 (or higher)etc. (of course, your internet router may or may not sync to a stratum 0 master; it could be a higher stratum which in that case you'd increment your stratum numbers down the line appropriately) greg -Original Message- From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of bkvalent...@gmail.com Sent: Friday, July 09, 2010 7:07 AM To: cisco voip; Mark Holloway Cc: OSL osl Subject: Re: [OSL | CCIE_Voice] NTP A router that has ntp server configured also acts as a server. You don't need ntp master to act as a server. Brian - Reply message - From: cisco voip voip.ccieci...@gmail.com Date: Thu, Jul 8, 2010 10:42 pm Subject: [OSL | CCIE_Voice] NTP To: Mark Holloway m...@markholloway.com Cc: OSL osl ccie_voice@onlinestudylist.com But ntp master command is necessary for the router to be able to be ntp server for anyone else. i agree about stratum chain, but without ntp master command publisher should not be able to get its clock. you can check show ntp associations on the router, after ntp master command only it will show you the local interface. now if you want to use the stratum to be 1 more from whatever the stratum is on actual source, you do not need stratum command, for anything else you need that commnd On Fri, Jul 9, 2010 at 4:42 AM, Mark Holloway m...@markholloway.com wrote: Cool, thanks Graham and Randall. On Jul 8, 2010, at 4:11 PM, Graham Hopkins wrote: Default stratum is 8 so a simple ntp master will work Graham On 8 Jul 2010, at 23:59, Mark Holloway m...@markholloway.com wrote: Yikes, I meant ntp master stratum X not ntp server stratum X On Jul 8, 2010, at 3:57 PM, Mark Holloway wrote: If a router (for example, HQ) is configured with the ntp server x.x.x.x command to sync time from another source, but I want another device (such as PUB) to get its time from the HQ router, do I also need to configure the HQ router with ntp server stratum X or can UCM simply get the time sync from HQ without the stratum command? ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
[OSL | CCIE_Voice] NTP
If a router (for example, HQ) is configured with the ntp server x.x.x.x command to sync time from another source, but I want another device (such as PUB) to get its time from the HQ router, do I also need to configure the HQ router with ntp server stratum X or can UCM simply get the time sync from HQ without the stratum command? ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] NTP
Yikes, I meant ntp master stratum X not ntp server stratum X On Jul 8, 2010, at 3:57 PM, Mark Holloway wrote: If a router (for example, HQ) is configured with the ntp server x.x.x.x command to sync time from another source, but I want another device (such as PUB) to get its time from the HQ router, do I also need to configure the HQ router with ntp server stratum X or can UCM simply get the time sync from HQ without the stratum command? ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] NTP
Default stratum is 8 so a simple ntp master will work Graham On 8 Jul 2010, at 23:59, Mark Holloway m...@markholloway.com wrote: Yikes, I meant ntp master stratum X not ntp server stratum X On Jul 8, 2010, at 3:57 PM, Mark Holloway wrote: If a router (for example, HQ) is configured with the ntp server x.x.x.x command to sync time from another source, but I want another device (such as PUB) to get its time from the HQ router, do I also need to configure the HQ router with ntp server stratum X or can UCM simply get the time sync from HQ without the stratum command? ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] NTP
You don't need to use ntp master on the gateway. The ntp servers work like in a chain and the higher up on the hierarchy, the lower the stratum. So if router synchs to ntp stratum 3, it becomes stratum 4 for the callmanager. The Pub is Stratum 5 for the Subscriber. CUCM won't do ntp with an ntp server that has stratum 10 or higher. On Thu, Jul 8, 2010 at 4:59 PM, Mark Holloway m...@markholloway.com wrote: Yikes, I meant ntp master stratum X not ntp server stratum X On Jul 8, 2010, at 3:57 PM, Mark Holloway wrote: If a router (for example, HQ) is configured with the ntp server x.x.x.x command to sync time from another source, but I want another device (such as PUB) to get its time from the HQ router, do I also need to configure the HQ router with ntp server stratum X or can UCM simply get the time sync from HQ without the stratum command? ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com -- Randall da ill Saborio CCIE Voice Wannabe #10054675811 (Real number coming this July 2010) ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] NTP
Cool, thanks Graham and Randall. On Jul 8, 2010, at 4:11 PM, Graham Hopkins wrote: Default stratum is 8 so a simple ntp master will work Graham On 8 Jul 2010, at 23:59, Mark Holloway m...@markholloway.com wrote: Yikes, I meant ntp master stratum X not ntp server stratum X On Jul 8, 2010, at 3:57 PM, Mark Holloway wrote: If a router (for example, HQ) is configured with the ntp server x.x.x.x command to sync time from another source, but I want another device (such as PUB) to get its time from the HQ router, do I also need to configure the HQ router with ntp server stratum X or can UCM simply get the time sync from HQ without the stratum command? ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] NTP
But ntp master command is necessary for the router to be able to be ntp server for anyone else. i agree about stratum chain, but without ntp master command publisher should not be able to get its clock. you can check show ntp associations on the router, after ntp master command only it will show you the local interface. now if you want to use the stratum to be 1 more from whatever the stratum is on actual source, you do not need stratum command, for anything else you need that commnd On Fri, Jul 9, 2010 at 4:42 AM, Mark Holloway m...@markholloway.com wrote: Cool, thanks Graham and Randall. On Jul 8, 2010, at 4:11 PM, Graham Hopkins wrote: Default stratum is 8 so a simple ntp master will work Graham On 8 Jul 2010, at 23:59, Mark Holloway m...@markholloway.com wrote: Yikes, I meant ntp master stratum X not ntp server stratum X On Jul 8, 2010, at 3:57 PM, Mark Holloway wrote: If a router (for example, HQ) is configured with the ntp server x.x.x.x command to sync time from another source, but I want another device (such as PUB) to get its time from the HQ router, do I also need to configure the HQ router with ntp server stratum X or can UCM simply get the time sync from HQ without the stratum command? ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
[OSL | CCIE_Voice] NTP on UCCX
When configuring NTP on the UCCX server, i see two approaches when asked to configure NTP. Which way would you go ? - Configure NTP on the Windows OS (Using windows registry hack) (More Involved) - Configure NTP on the UCCX app itself during Integration. (Faster Seems to work) (Disadvantage : windows time does not seem to sync up since only app is synced) -- - Pavan ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] NTP on UCCX
Use the IP Address of your CUCM Publisher (as it runs an NTP server). On Fri, Jun 11, 2010 at 6:28 AM, Pavan K pav.c...@gmail.com wrote: When configuring NTP on the UCCX server, i see two approaches when asked to configure NTP. Which way would you go ? - Configure NTP on the Windows OS (Using windows registry hack) (More Involved) - Configure NTP on the UCCX app itself during Integration. (Faster Seems to work) (Disadvantage : windows time does not seem to sync up since only app is synced) -- - Pavan ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com -- Cheers, Tanner Ezell ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
Re: [OSL | CCIE_Voice] NTP on UCCX
you would also need clock timezone and summertime (if asked) On Fri, Jun 11, 2010 at 10:22 AM, Dani Bug daniyal.vo...@gmail.com wrote: go with option 2 NTP UCCX also i just want to confirm in NTP on R1 R2 and R3 which commands we required lab perspective view ... ntp server x.x.x.x wht else command we required to configure Thx Dani On Fri, Jun 11, 2010 at 9:28 AM, Pavan K pav.c...@gmail.com wrote: When configuring NTP on the UCCX server, i see two approaches when asked to configure NTP. Which way would you go ? - Configure NTP on the Windows OS (Using windows registry hack) (More Involved) - Configure NTP on the UCCX app itself during Integration. (Faster Seems to work) (Disadvantage : windows time does not seem to sync up since only app is synced) -- - Pavan ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com -- - Pavan ___ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
