We have a new expressway funness.   Edge side of the cluster all reboot at one 
time.. every x number of days….

Take the easy ones!

> On Jan 12, 2021, at 10:41 PM, Hunter Fuller via cisco-voip 
> <[email protected]> wrote:
> 
> Whoever said that has clearly never administered Expressway. 
> 
> On Tue, Jan 12, 2021 at 23:25 Anthony Holloway 
> <[email protected] <mailto:avholloway%[email protected]>> 
> wrote:
> Nice! That was easy.  This email chain goes into my folder called: When 
> Someone Says Only Windows Servers Need Reboots.
> 
> On Tue, Jan 12, 2021 at 7:40 PM Riley, Sean <[email protected] 
> <mailto:[email protected]>> wrote:
> So far it seems the reboot resolved this problem.  Thanks for all the replies 
> with guidance and help.
> 
>  
> 
> From: Kent Roberts <[email protected] <mailto:[email protected]>> 
> Sent: Tuesday, January 12, 2021 4:42 PM
> To: Riley, Sean <[email protected] 
> <mailto:[email protected]>>
> Cc: [email protected] <mailto:[email protected]>
> 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 <[email protected] 
> <mailto:[email protected]>> 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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> -- 
> 
> --
> Hunter Fuller (they)
> Router Jockey
> VBH Annex B-5
> +1 256 824 5331
> 
> Office of Information Technology
> The University of Alabama in Huntsville
> Network Engineering
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