Change CUCM8.5 Server HostName to IP address

[Georgios Sotiropoulos (OLD)]

Hello Community,

How safe it is to change the Hostname field of a CUCM Publisher from Name to IP address?

I am thinking to do this change on the Server/ Server Configuration tab, but i want to make sure that i want miss the functionality of the Call Manager.

I need to point out is that i will not change the IP address, i am thinking to denote it in the server field instead of the name.

Thanks in advance for any response.

G

[Chris Deren]

I have done this many times without causing any issues.

HTH,

Chris

[Aaron Harrison]

Hi

Yes, generally in the 'servers' page you are better of with IP addresses set.

Other things to note when you change the hostname of the publisher:

- You must update the subscribers with the new publisher hostname in the OS admin pages or CLI

- If you have issued certificates to the tomcat server on the publisher, you'll need to re issue those

- Similarly you'll have to update DNS and any references to services such as EM that might point at the publisher

Regards

Aaron Harrison

Principal Engineer at Logicalis UK

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[Aaron Harrison]

Hmm.. I went off on one there.. just realised you don't want to change the hostname, just the reference in the servers page.

So yes - that will be fine!

Aaron

[Georgios Sotiropoulos (OLD)]

Thanks Aaron,

Actually i am thinking to replace the hostname (CUCM) with the actual IP address of  the Call Manager to avoid DNS issues:

Do you think that this may cause issues?

[Aaron Harrison · Accepted solution]

Hi

Yes, it's fine to change it there... THis basically just changes the references in the TFTP config files from name to IP.

Regards

Aaron

[Georgios Sotiropoulos (OLD)]

Thanks for your prompt reply.

This is what i think as well, it is just that i want to make sure that this change wont affect the operation of the CUCM, since it is a live server.

Ideally, since the IP address remains the same then this change wont affect anything,

kind regards,

george