[cisco-voip] CUCM call set up issue after migration

[Riley, Sean]

So far it seems the reboot resolved this problem.  Thanks for all the replies with guidance and help.

From: Kent Roberts <kent at fredf.org>
Sent: Tuesday, January 12, 2021 4:42 PM
To: Riley, Sean <SRiley at robinsonbradshaw.com>
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] CUCM call set up issue after migration

Ah split brains. Gotta love it.   Did you restart the ones that did not move?    I have seen this when things go stupid. The sync usually isn’t the problem it’s the real-time communication between the nodes that’s all messed up.     Usually can fix with a node reboot or restarting the cucm and cti services.   Course their maybe more to it but if things are in sync  should not be hard to fix

Kent


On Jan 12, 2021, at 14:06, Riley, Sean <SRiley at robinsonbradshaw.com<mailto:SRiley at robinsonbradshaw.com>> wrote:

This past weekend we migrated 2 CUCM servers to a new datacenter.  This involved changing the IP address on these 2 CUCM nodes.  These 2 nodes consist of the Publisher and 1 Subscriber.  We have another Sub at a remote datacenter that was not touched this past weekend.

Node configuration:

DC A
CM1: Pub which was re-ip’d
CM2: Sub which was re-ip’d

DC B:
CM3: Sub at remote site that was not changed

Phones are at many sites, but issue is independent of the phone type, phone location or subnet.  Also, Expressway phones have the same issue.

The issue is any phone that is registered to CM3 cannot call phones registered to CM1 or CM2 and vice versa.  The phones do not see the call coming in.  If SNR is configured, the call will ring to the remote destination. Phones registered to CM3 can make outbound PSTN calls without issue, but not receive inbound from PSTN (probably because the gateway is handing off to CM1 or CM2).  While the gateways are not unique to the issue, they are running H323.

If the phones are both registered to CM3, they can call each other, but not phones registered to CM1 or CM2.

I have had my network team verify there is not anything they can see in the network causing this behavior. Database replication checks out OK and I can ping from/to each node.

Anyone able to point me in the right direction to figure this out?

Thanks.
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