Database synchronization between CCMs

Unanswered Question
May 28th, 2008

We are moving a CCM 4.1.3 cluster to a cluster over wan deployment.

As there will be much more synchronization issues when doing over IP Wan. Is there any way we can check and ensure the database replicated from the publisher is error free?

I have this problem too.
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thisisshanky Wed, 05/28/2008 - 06:57

As long as you can ensure the 40ms RTT restriction you should be good. You can probably look at DBL logs to see if replication happened successfully.

Tim Smith Wed, 05/28/2008 - 07:01


As long as you follow the guidelines from the SRND you should be fine.

Ensure appropriate bandwidth is available, and all the CallManager signalling traffic has the appropriate QoS... be careful of bandwidth, latency, jitter and packet loss as per usual.

It is not just synchronisation on the DB to worry about, but actually inter-callmanager signalling to setup calls etc. This messaging is essential for normal operations.

Check your event logs and be on the look out for SDL errors.

Cisco Unified Operations manager keeps a good eye on the DB syncing though. It can also do good things like synthetic tests, to test calls, registration, tftp and dial tone..

Otherwise you can do manual checks of syncing, by using SQL enterprise manager and Query Analyser..

Enterprise manager will tell you the health of the subscriptions...

EM and Query Analyser can be used to manually check items created in the publisher have been replicated to the various subs...

Also look up DBLHelper

Remember, there is no substitute for good quality links and bandwidth! :)




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