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hankej
Beginner

Good Public NTP server for Callmanager and Unity?

I have been having many, many issues with my callmanager and Unity servers becoming unsynchronized with the NTP server.  I have a TAC case open and they said "

If this is also happening for CUCM cluster, I suggest changing the NTP server. Cisco recommends using a Linux based NTP server since it is more stable. A NTP server unsync could bring serious issues like a replication problem which can extremely affect the production."

 

I currently am pointing my CUCM and Unity Publisher servers to Google.  I'm not sure if they are Linux based or not.  Is there a good, Linux based NTP server that you use?  I am in North America.


Thanks

1 ACCEPTED SOLUTION

Accepted Solutions
Vaijanath Sonvane
VIP Advocate

Hi,

I used NIST NTP public servers. These are reliable and has stratum 1 or 2. Choose the one closer to your area.

https://tf.nist.gov/tf-cgi/servers.cgi

 

 

 

Please rate helpful posts and if applicable mark "Accept as a Solution".
Thanks, Vaijanath S.

View solution in original post

2 REPLIES 2
Vaijanath Sonvane
VIP Advocate

Hi,

I used NIST NTP public servers. These are reliable and has stratum 1 or 2. Choose the one closer to your area.

https://tf.nist.gov/tf-cgi/servers.cgi

 

 

 

Please rate helpful posts and if applicable mark "Accept as a Solution".
Thanks, Vaijanath S.

View solution in original post

Nithin Eluvathingal
VIP Advisor

I always sync my core switch  with time.google.com and use core as ntp for CUCM and unity. No where I faced issues.

 

 



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