[cisco-voip] NTP Problem Cucm ver 8.6.2

[Nathan Reeves]

I recently saw something similar on a 2 node cluster.  NTP would initially
sync but then fall out of sync.  Logs were showing a greater than 'x' time
difference and it was restarting NTP.  As a final step I rebooted both
nodes and it NTP would resync.

When you did a 'utils ntp status' on the boxes it would show that the
reference source was LOCL which appears to be the hardware clock.  Hardware
clock is used when NTP fails to sync.

Not ever had to reset ITL / CTL files though.




On Sun, Jul 7, 2013 at 9:51 PM, Bryant Onojeta <onojetathekid at gmail.com>wrote:

> If, it's only some phones having the problem…then we assume the that ntp
> with the cucm is accurate…the pub will be the master and the subs will get
> ntp from the pub.
>
> I guess more info is needed, but the itl file deletion was recommended
> from cisco on OUR particular issue.
>
> -Bryant
>
> From: Ed Leatherman <ealeatherman at gmail.com>
> Date: Sun, 7 Jul 2013 09:48:43 -0400
> To: James Dust <james.dust at charles-stanley.co.uk>
> Cc: Bryant Onojeta <onojetathekid at gmail.com>, Kenneth Hayes <
> kennethwhayes at gmail.com>, "cisco-voip at puck.nether.net" <
> cisco-voip at puck.nether.net>
>
> Subject: Re: [cisco-voip] NTP Problem Cucm ver 8.6.2
>
> I wonder if Call Manager is looking for a particular maximum stratum for
> it's NTP source before it will use that time, and maybe your 6500 is now
> sending with a worse stratum? See these two:
>
> http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a0080b2cd0e.shtml
> https://supportforums.cisco.com/thread/2044292
>
> what does the 'utils ntp status' command show?
>
> Would be really strange if you had to clear ITL out to fix time display.
>
> On Sun, Jul 7, 2013 at 3:49 AM, James Dust <
> james.dust at charles-stanley.co.uk> wrote:
>
>> Morning,
>>
>>
>>
>> Yes the switch is back up and has been for some time.
>>
>>
>>
>> Is there a way of doing this procedure remotely?
>>
>>
>>
>> Kind Regards
>>
>>
>>
>> James
>>
>>
>>
>>
>> --
> Ed Leatherman
>
> _______________________________________________
> cisco-voip mailing list
> cisco-voip at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/cisco-voip/attachments/20130707/a7ac49d0/attachment.html>