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.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.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 >>>>> > ~157.26.1.100 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 >>>>> >>>> >>>> >>>> _______________________________________________ >>>> 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
