IP Address change process and Impact

[Amit23]

Hi,

I am planning to perform below steps and need your expertise to confirm if going in right way and will wokr as it is mentioned below. if need changes please advice me:

below all uc applications version 9.1.X.12XXX-XX

1> cucm sub ip change in cluster of 3 server

2> cuc pub ip change

3> imp pub ip change

as per cisco, if change ip of these server, we need to rehost the licens ein ELM server.

correct me if i am wrong.

please advise me if need to check nd perform any other step before and during this task..

Thanks

[Flo.Matalis]

You may refer to this document: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/install/9_0_1/ipchange/CUCM_BK_C936116C_00_changing-ipaddress-hostname-cucm-90.html

No need to re-host license in version 9.X to up.

[Amit23]

Thanks for your help, Let me go through it to follwo for my task..
would be any issue as need to chnage subscriber ip only not the publisher for cucm, cuc nd imp.

[Flo.Matalis]

Just make sure you have the forward and reverse DNS configured prior changing the IP address/hostname and all applications that are referring to the old IP (ex.Option 150, SIP Trunk, or others) are changed as well after the change.