CUCM 10.5.2 SU3 CLUSTER "SPLIT BRAIN" PROBLEM

[kirkedwards]

All,   We recently upgraded a three server CUCM cluster to 10.5.2 SU3. Since then we noticed that a phone will be listed as registered on only one of the two subs, and listed as "none" or unregistered on the other sub. As a phone can talk with only one sub at a time.  Connectivity between both servers in the cluster is fine. All services are up. Everything worked before the upgrade.  Any ideas???

Thanks....

[james.buchanan1 · Accepted solution]

You can sometimes fix this by rebooting the RIS DB service on all three servers (non-service impacting) but usually a full cluster reboot is required to fix this.

[kirkedwards]

James,

        I restarted the RIS DB on all three servers via the Serviceability GUI and it fixed the problem!

        Thanks and have a great Cisco day.

                           Kirk E.