[cisco-voip] Restarting NTP on CUCM 6.1.3 subscriber?

Discussion:

Erick Bergquist

2009-05-20 20:49:24 UTC

The publisher is pointing to a NTP server which is accessible and
working, but the subscriber server which uses the publisher server for
NTP lists it as not accessible on the NTP settings page. I can ping
the publisher by name and IP listed on the NTP Page from the
subscriber server fine.

I looked under services on the web page and SSH console and don't see
a service I can restart relating to NTP or time. Is there anything I
can do short of rebooting the server?

Thanks, Erick

Jason Burns

2009-05-20 21:00:00 UTC

Permalink

Check NTP on the subscriber by using

utils ntp config

utils ntp status

send us the output if it doesn't make immediate sense.

If ntp shows as stopped for some reason you can use

utils ntp start

I think cluster manager may sync over the NTP info, but I'm not sure. You
could try restarting that, and if still no luck, restarting the server.

Post by Erick Bergquist
The publisher is pointing to a NTP server which is accessible and
working, but the subscriber server which uses the publisher server for
NTP lists it as not accessible on the NTP settings page. I can ping
the publisher by name and IP listed on the NTP Page from the
subscriber server fine.
I looked under services on the web page and SSH console and don't see
a service I can restart relating to NTP or time. Is there anything I
can do short of rebooting the server?
Thanks, Erick
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Erick Bergquist

2009-05-20 21:36:30 UTC

Permalink

Cool, thanks.

Those commands show different then whats in the web page. The pub has
not synced on CLI but web page has synced.

The other odd thing is when I restarted NTP it just sat there. I also
deleted the NTP server via GUI and re-added it and no change.

I think the issue is what another person posted recently about using a
Win2003 server so going to follow what was done for that which was
using pool.ntp.org.

Post by Jason Burns
Check NTP on the subscriber by using
utils ntp config
utils ntp status
send us the output if it doesn't make immediate sense.
If ntp shows as stopped for some reason you can use
utils ntp start
I think cluster manager may sync over the NTP info, but I'm not sure. You
could try restarting that, and if still no luck, restarting the server.

Jason Burns

2009-05-20 22:51:27 UTC

Permalink

If the NTP client can't sync to the external source it may mark itself as
synced to the local clock. It may cause the discrepancy you're seeing in the
CCM web page.

Syncing to a reliable external source is extremely important. I've seen
instances where a CCM server was synced to two different sources with
varying times (and one marked as stratum 1), and it caused critical service
crashes as the clock was constantly resetting on the CCM server.

pool.ntp.org, or the local equivalent for your area is something I would
deem reliable.

http://support.ntp.org/bin/view/Servers/WebHome

If you want to really geek out and learn more about NTP follow the previous
link.

Post by Erick Bergquist
Cool, thanks.
Those commands show different then whats in the web page. The pub has
not synced on CLI but web page has synced.
The other odd thing is when I restarted NTP it just sat there. I also
deleted the NTP server via GUI and re-added it and no change.
I think the issue is what another person posted recently about using a
Win2003 server so going to follow what was done for that which was
using pool.ntp.org.

Adam Frankel

2009-10-07 01:35:50 UTC

Permalink

You could try activating the "Cisco CallManager" service on the Subscriber.

Adam

-------- Original Message --------
Subject: [cisco-voip] adding subscriber in the CUCM cluster
From: Scott Kee <***@cmsstl.com>
To: cisco-voip mailinglist <cisco-***@puck.nether.net>
Date: 10/6/09 12:48 PM

I am trying to setup a test CUCM cluster in my test lab. I’ve setup
CUCM Publisher and Subscriber using VMware v2.

I tweaked MAC Addresses so both Publisher and Subscriber has MAC address
as production server.

I installed License keys so CUCM has 2 server and devices licenses. So
I think I am good as far as licenses concern.

I installed Publisher and works fine however I installed Subscriber but
it is not showing up in the CUCM Group.

It only shows Publisher. I configured subscriber in the System->Server
and System->Cisco Unified UM before I installed Subscriber.

Do I need to change anything after the installation?

------------------------------------------------------------------------

Scott Kee

2009-10-07 13:12:46 UTC

Permalink

Yep that was the issue.

Thanks for the help.

scott

-----Original Message-----
From: Adam Frankel [mailto:***@cisco.com]
Sent: Tuesday, October 06, 2009 8:36 PM
To: Scott Kee
Cc: cisco-voip mailinglist
Subject: Re: [cisco-voip] adding subscriber in the CUCM cluster

You could try activating the "Cisco CallManager" service on the Subscriber.

Adam

-------- Original Message --------
Subject: [cisco-voip] adding subscriber in the CUCM cluster
From: Scott Kee <***@cmsstl.com>
To: cisco-voip mailinglist <cisco-***@puck.nether.net>
Date: 10/6/09 12:48 PM

I am trying to setup a test CUCM cluster in my test lab. I've setup
CUCM Publisher and Subscriber using VMware v2.

I tweaked MAC Addresses so both Publisher and Subscriber has MAC address
as production server.

I installed License keys so CUCM has 2 server and devices licenses. So
I think I am good as far as licenses concern.

I installed Publisher and works fine however I installed Subscriber but
it is not showing up in the CUCM Group.

It only shows Publisher. I configured subscriber in the System->Server
and System->Cisco Unified UM before I installed Subscriber.

Do I need to change anything after the installation?

------------------------------------------------------------------------