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Beginner

Time Synchronization issue on CUCM with NTP Server (Cisco Router)

Hello Experts,

We need your suggestion to configure Cisco 3800 Router as NTP Server and Syn with Cisco Call Manager to show correct time order on Cisco IP Phones.

There was a NTP Server before which is remove now but IP Phones are showing 30 min off from the Actual time.

We did Cisco 3800 as NTP server and added in CUCM as NTP Server but still time is showing different on Cisco IP Phones.

Please assist.

Thanks,

30 REPLIES 30
Highlighted
Contributor

Can you please share output of "utils ntp status"

Thanks

Manish

Highlighted
Advisor

Hi Amin,

Can u share the output of command from Publisher ?

utils  ntp status

Secondly,after u added new NTP reference in call manager, did u restart using command utils ntp restart.

regds,

aman

Highlighted

Hello Experts,

Here is output of the command:

SUB

ntpd (pid 19311 19005) is running...

     remote           refid      st t when poll reach   delay   offset  jitter

==============================================================================

*127.127.1.0     127.127.1.0     10 l   34   64  377    0.000    0.000   0.015

synchronised to local net at stratum 11

   time correct to within 11 ms

   polling server every 64 s

Current time in UTC is : Sun Dec  1 06:46:13 UTC 2013

Current time in Mideast/Riyadh89 is : Sun Dec  1 09:53:17 zzz 2013

PUBLISHER

admin:utils ntp status

ntpd (pid 15948 15947 15623) is running...

     remote           refid      st t when poll reach   delay   offset  jitter

==============================================================================

127.127.1.0     127.127.1.0     10 l   30   64  377    0.000    0.000   0.008

*172.16.7.2      127.127.1.0     11 u   11   64  377    0.191    0.086   0.011

synchronised to NTP server (172.16.7.2) at stratum 12

   time correct to within 21 ms

   polling server every 64 s

Current time in UTC is : Sun Dec  1 06:44:40 UTC 2013

Current time in Mideast/Riyadh88 is : Sun Dec  1 09:51:44 zzz 2013

Thanks,

Highlighted

Any phone ntp references in date/time group ?

Thanks

Manish

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Hello Manish,

Can you calrify This point ? "Any phone ntp references in date/time group ?

Thanks

Highlighted

System - Phone NTP References.

System - Date/Time Groups - xx_DTGrp - Phone NTP References.

Highlighted

Hi Amin,

I was just refering the line from  SRND which says

Cisco highly recommends configuring the publisher to point to a Stratum-1, Stratum-2, or Stratum-3 NTP server to ensure that the cluster time is synchronized with an external time source.

can u run the command in Publisher

utils diagnose module ntp_stratum  and share the output.

utils diagnose test

regds,

aman

Highlighted

Hello Aman,

Here is the output:

admin:utils ntp restart

Restarting NTP

admin:utils ntp status

ntpd (pid 26616) is running...

     remote           refid      st t when poll reach   delay   offset  jitter

==============================================================================

127.127.1.0     127.127.1.0     10 l   14   64    3    0.000    0.000   0.008

*172.16.7.2      127.127.1.0     11 u   53   64    1    0.206    0.001   0.015

synchronised to NTP server (172.16.7.2) at stratum 12

   time correct to within 22 ms

   polling server every 16 s

Current time in UTC is : Mon Dec  2 05:07:27 UTC 2013

Current time in Mideast/Riyadh88 is : Mon Dec  2 08:14:31 zzz 2013

admin:

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

admin:utils diagnose module ntp_straum

Log file: /var/log/active/platform/log/diag1.log

Starting diagnostic test(s)

===========================

Diagnostics Completed

admin:utils diagnose test

Log file: /var/log/active/platform/log/diag2.log

Starting diagnostic test(s)

===========================

test - disk_space          : Passed (available: 2324 MB, used: 10845 MB)

skip - disk_files          : This module must be run directly and off hours

test - service_manager     : Passed

test - tomcat              : Passed

test - validate_network    : Passed

test - system_info         : Passed (Collected system information in diagnostic log)

test - ntp_reachability    : Passed

test - ntp_clock_drift     : Passed

test - ntp_stratum         : Failed

The reference NTP server is a stratum 12 clock.

NTP servers with startum 5 or worse clocks are deemed unreliable.

Please consider using an NTP server with better startum level.

Please use OS Admin GUI to add/delete NTP servers.

Diagnostics Completed

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How is the poll duration 16 Seconds is different from the polling server value of 64 Seconds ?

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Hello Experts,

Time on CUCM is correct but its not forward to IP Phone..there is 6 mins difference on IP Phones.

Thanks,

Highlighted

Hi Amin,

Which version of CUCM you using ?

Are all  phones are getting date/time  by cucm or you are using some ntp reference in date/time group of that device pool ?

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Hi,

This is CM 6 and before we were using NTP Server but after removing the NTP Server the differene POP UP.

I will send the output in short while.

Thanks,

Highlighted

Hi Amin,

As asked by Prasad,please mention CUCM version and the model of IP phones which are facing the timing problem.

Did u ever try to reset Date/time group ?

regds,

aman

Highlighted

Hi Amin,

Just refer the link

After deleting, modifying, or adding NTP server, you must restart all the other nodes in the cluster for the changes to take affect.

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/cucos/6_0_1/cucos/iptpch4.html#wp1042131

regds,

aman