[cisco-voip] CUCM 10.5 cluster migration

[Schlotterer, Tommy]

They will register and work, but no SSL functions will work, eg secure Extension mobility or the  corporate directory.

Tommy


Tommy Schlotterer | Systems Engineer - Collaboration
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From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Mike O
Sent: Thursday, August 03, 2017 1:52 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] CUCM 10.5 cluster migration


Hi All, I need to move about a 100 phones to a new cluster, and then add an additional 200+ phones. My problem is I want to use the "Prepare Cluster for Rollback to pre-8.0" parameter, but I can't change the option 150 in the DHCP server until the next day. My question is once I set this parameter  and I reset the phones they will register with an empty ITL file, but will the phones still function? If I can reset the phones to clear the existing ITL and have them work the following day I can then change the option 150 to the new cluster and then reset the existing phones and add new phones in.  I know I can lab this up, but wanted to make sure there were no gotchas associated with this method.



Thanks,

Mike




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