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Cisco Bug: CSCtc93863 - NTP Watchdog fails for subs on IPv6 due to ntpdate incompatibility.

Last Modified

Nov 03, 2012

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases


Description (partial)


One of the following 2 symptoms applies:

   1) The syslog/messages file on a subscriber node shows "ntpdate[#####]: no server suitable for synchronization found".


   2) The subscriber installation fails during initial subscriber-to-publisher NTP time synchronization and InstallWiz blocks or abends Install with a message relating to NTP failure.


Both conditions below must apply:

   1) IPv6 MUST ALREADY HAVE BEEN enabled on the publisher (e.g., via CLI 'set network ipv6 enable').
   2) The subscriber node is having problems synchronizing NTP with the publisher.
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