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 +0000
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 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 rece! ived 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
> >> dev! ice 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 attachment was
> > scrubbed...
> > URL:
> > </archives/ccie_voice/attachments/20120805/f5a0f2f7/attachment-0001.ht
> > ml>
> >
> > ------------------------------
> >
> > Message: 3
> > Date: Sun, 5 Aug 2012 10:21:30 -0300
> > From: Bruno Nonogaki <brun...@gmail.com>
> > To: Justin McIntyre <justin.mcint...@blackbox.com>
> > Cc: "ccie_voice@onlinestudylist.com" <ccie_voice@onlinestudylist.com>
> > Subject: Re: [OSL | CCIE_Voice] Switch QOS query
> > Message-ID:
> >
> > <cap_rldxltmb2zgsretwit5xz5aiq7bxgwvooygfg1xvwugh...@mail.gmail.com>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > Hi Vir,
> >
> > I agree with Justin regarding the issue with the requirements.
> >
> > And I also recommend you the Kevin Wallace's video:
> > http://www.youtube.com/watch?v=IA4iOrn2eiU
> >
> > Regards,
> >
> > Bruno
> >
> >
> > On Sun, Aug 5, 2012 at 10:10 AM, Justin McIntyre <
justin.mcint...@blackbox.com> wrote:
> >
> >> 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.
> >> _______________________________________________
> >> 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 attachment was
> > scrubbed...
> > URL:
> > </archives/ccie_voice/attachments/20120805/9a62! 9423/attachment-0001.ht
> > ml>
> >
> > ------------------------------
> >
> > Message: 4
> > Date: Sun, 5 Aug 2012 09:21:54 -0400
> > From: Justin McIntyre <justin.mcint...@blackbox.com>
> > To: "ccie_voice@onlinestudylist.com" <ccie_voice@onlinestudylist.com>
> > Subject: Re: [OSL | CCIE_Voice] ntp master- is it necessary
> > Message-ID: <f8c71ccc-5427-4073-a0cf-fb75be61c...@blackbox.com>
> > Content-Type: text/plain; charset="us-ascii"
> >
> > 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 emai! l in error, please notify the
sender by replying to this
email.
> >
> >
> > ------------------------------
> >
> > _______________________________________________
> > CCIE_Voice mailing list
> > CCIE_Voice@onlinestudylist.com
> >
http://onlinestudylist.com/mailman/listinfo/ccie_voice
> >
> >
> > End of CCIE_Voice Digest, Vol 78, Issue 14
> > ******************************************
> >
> >
> >
> >
> > _______________________________________________
> > 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
