System Domain Name Changes on 11.5. Should we perform "Prepare Cluster for Rollback to pre 8.0" Feature?

[sharon1shaw]

We will be changing our server domain names on our CUCM 11.5 cluster (inc IM&P). The host and ip address will remain the same, just the FQDN will change.

In the process documents for 10.x or >, there doesn't seem to be the need to perform the  "Prepare Cluster for Rollback to pre 8.0" Feature?"

We use non-secure cluster security, with our phones using ITL certs. 

Wanted to know if anyone performed operating system DNS changes >10.x and found to have ITL certs issues post change, without using the pre 8.0 feature, or should we just use that feature anyway as a precaution?

Many thanks in advance.

Sharon

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/install/10_0_1/ipchange/CUCM_BK_C3782AAB_00_change-ipaddress-hostname-100/CUCM_BK_C3782AAB_00_change-ipaddress-hostname-100_chapter_0100.html#CUCM_TK_RBE7D7DC_00

[Jaime Valencia]

As long as you don't go and change them one right after the other, or try to do them all at the same time, there should be no problems

Read here:

http://www.cisco.com/c/en/us/support/docs/voice-unified-communications/unified-communications-manager-callmanager/116232-technote-sbd-00.html#anc16

[sharon1shaw]

Thanks for the confirmation Jaime, much appreciated.