CUCM NTP Synch but Unity Connection is not synching

[anis_cisco]

Hello,

We are in process of installing CUCM 9.1.2.10000-28 & Unity Connection 9.1.2.10000-28 on UCS.

CUCM Installed successfully but Unity connection failed in synchronising NTP.

I am using same NTP Server for Unity Connection which i used for CUCM.

Can any body suggest why NTP for Unity Connection is not successful ?

Regards,

[Nishant Savalia]

Hi,

From where you are taking clock for Unity connection? Hope external NTP is recheable from Unity connection.

Can you please share "utils ntp status" from CUCM and unity connection as well.

Regards,

Nishant Savalia

[Aman Soi]

Hi Anis,

Do check for the stratum level ?

I can see bug for unity connection 8 but same is appearing for version 9 as well.

https://tools.cisco.com/bugsearch/bug/CSCtn42693

Need to update docs with correct acceptable stratum level for NTP source

CSCtn42693

Description

Symptom:
Incorrect information in the document regrading acceptable stratum levels for NTP source.

Cisco Unified Communications Operating System Administration Guide for Cisco Unity Connection Release 8.x
Settings
NTP Servers 

http://www.cisco.com/en/US/docs/voice_ip_comm/connection/8x/os_administration/guide/8xcucosag040.html#wp1053371

------ excerpt ---------
Ensure that external NTP servers are stratum 9 or higher (1-9)
---------------

Conditions:
When verifying the docs for acceptable NTP stratum levels for products running on VOS

Workaround:
This defect is for to update the document with correct information.

The acceptable stratum level are (> 1 and < 6 ) on a primary node and ( > 2 and < 7 ) on a secondary node.

regds,

aman 

[anis_cisco]

Gents,

Thank you so much for your time & reply.

I had external NTP Server (6500 Core Switch acting as NTP Server).

I put CUCM as NTP Server into Unity Connection & it worked.

I can share the output by tomorrow. But i didnt understand why it worked with CUCM as NTP Server ?

Regards,
 

[Manish Gogna]

Hi Anis,

If the stratum value was correct and it was working fine with cucm then most probable cause of NTP issue on Unity connection could be a network connectivity issue between Unity Connection and the NTP server. You can take captures from CUCM Publisher and Unity connection Publisher and compare the NTP packets on both of them to check the difference.

HTH

Manish

[Sreekanth Narayanan · Accepted solution]

Try the following commands:

1. utils network ping x.x.x.x (NTP server)

2. utils ntp reset

3. utils ntp status

Also try to set the CUCM publisher as the NTP server for the CUC and see if that works.

Thanks

Sree