Hello Cisco Community,
via PCD I have migrate CUCM cluster in Version 9 to Version 11.5 with new hostnames / IPs. So lets say we have now 2 Clusters.
Everything is running good so far. The ITL consolidation run smoothy and I can change manually the TFTP information in a phone to bring the phone to the new cluster and back to the old.
Now the problem:
customer wants not to change the option 150 to the new IPs of the TFTP Servers.
I consider to turn off the "old" TFTP Servers (Disconnect from ESXI) and do a IP Adress change of the new TFTP Servers pointing to the old IP Adresses and then reset the Phones from the old CUCM.
But i'm not sure about the Publisher node. Does the old cluster see then the new cluster ???
Thanks for helping out,
Stefan
But I'm not sure If this will working fine.