Configuration validaton with Publisher failed

[J_Vansen_S]

Hi all

I am trying to install a subscriber to my existing publisher. But im getting configuration validation failed with the publisher. I have on the publisher configured the intended subscriber IP address

My publisher is not configured with any dns hostname/client. Under Server configuration --> ip address

1. Is it a must for my publisher to be assigned a dns resolvable hostname in order for subscriber to be installed and paired with it
2. What will happen to my publisher if I were to change Under Server configuration --> from ip address to hostname BUT WITHOUT a VALID DNS SERVER ENTRY? By doing this Will I bring down the whole production CUCM?
3. Is there any other walkaround solution to install the subscriber?

[Venkatesh Perumal]

Hi,

whats your cucm version? just make sure the security password is exactly same while configuring the subscriber.

we also have a defect on the version 8.6: https://tools.cisco.com/bugsearch/bug/CSCub14050

how would you describe a publisher while installing the subscriber without an IP address, its a must  and The System->Server field in the CCMAdmin web page is a very important setting.  It can have one of three values, IP address, Hostname or the FQDN.

regards,

-Do rate helpful posts.

[Aman Soi]

In addition to what Venperum has asked, need to know the exact CUCM version .If u are using 8.6, do u have enough Node licenses just guessing.

the security password should be same while adding node in cluster.

regds,

aman

[J_Vansen_S]

Hi Venperum

Thanks

im on CUCM 10.5, security password is accurate

Yes of course, it must have either an IP Address/Hostname.

Currently it is configured with an IP Address, my question is: what if i give it a hostname but it is not resolvable by the DNS server. Will i get locked out of the CUCM?

Fyi there is no DNS server currently in the network(Not ready)

[Aman Soi]

Hi Vansen,

refer the discussion if it helps

https://supportforums.cisco.com/discussion/12451881/cucm-105-fresh-install-suscribers-fails

regds,

aman

[J_Vansen_S]

Looks like i got this sorted.

By key-ing in the secret key again, and also make sure NTP server/time is up

DNS did not quite matter in my case