04-16-2019 11:03 AM
How can I find a CUCM Failover event in the console logs on 8851 and 8865 phones? What are some key words to search?
I want to find out if a certain group of phones fail over from a primary CUCM subscriber to the secondary subscriber.
I have seen the "Registration state change: SIP_REG_STATE_UNKNOWN" message, but it isn't consistent.
I am getting "NumberOfRegisteredPhonesDropped" messages in the Syslog, but I can't tell which phones are re-registering. This is probably caused by a circuit flapping, and if I knew which phones were re-registering, then I could isolate the problem.
Thanks, Randy
Solved! Go to Solution.
04-18-2019 01:45 AM
04-16-2019 07:24 PM
Logs on switches would be where I might look depending on how big your environment, easy enough to see.
On phone status messages you should see tcp connection time out and then the secondary cucm server in group become active.
i am sure logging on sip messages on cucm could be turned on and you see the re register process that way as well.
04-17-2019 10:26 AM
This is a large, complex LAN/WAN environment and I don't have access to the switches.
I am tracking thousands of phones, and the CUCM log files are huge.
This is why I am looking for specific key words to search on.
There are a few hundred phones in the same building as the problem data center. If I can show that those are failing over, then it's likely a core switch or vSwitch problem, not a WAN problem.
Thanks, Randy
04-18-2019 01:45 AM
04-18-2019 04:59 PM
The Event Viewer logs had what I was looking for. I used Notepad++ to count the phones in a given subnet that were re-registering. All of the problem phones were in one CallManager Group, except the phones that were in the same campus as the primary Subscriber. So it looks like a WAN link issue.
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