Changins Subnet Mask and Gateway for CUCM & CUC 8.6

Answered Question
Nov 19th, 2013
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Hi,


Am planning for cutting down the Subnet of Telecom Servers IP Range. Once i do this, all CUCM & CUC servers Subnet mask and Gateway has to be changed, but IP Address remains the same.


Changing the Subnet mask and Gateway will impact anything or any precautionary measures or any procedures to be followed ??


Pls suggest.


Regards

Jagadish G                  

Correct Answer by Aman Soi about 3 years 9 months ago

Hi Jagadish,


I was just referring the DOC which I have attached which says


Initial Trust List and Certificate Regeneration

If you change the IP address or the hostname of a server in a Cisco Unified Communications Manager release 8.0 or later cluster, the Initial Trust List (ITL) file and the certificates in the ITL are regenerated. The regenerated files do not match the files stored on the phones.


regds,

aman

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Jaime Valencia Tue, 11/19/2013 - 23:02
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Not if youre using MCS, otherwise, youll need to rehost the licenses as it affects the license MAC

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Jagsuvce G Tue, 11/19/2013 - 23:10
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Yes we are using Cisco MCS 7800 series servers. How will the mac gets affected ??

Jaime Valencia Tue, 11/19/2013 - 23:17
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It wont, that only affects if you are running over ESXi

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Jagsuvce G Tue, 11/19/2013 - 23:26
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So i can go a head and change the subnet mask and default gateway without any measures right ??

Jagsuvce G Tue, 11/19/2013 - 23:53
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Hi,


Will the ITL files gets changed/regenerated after changing only the Subnet Mask & Gateway ??.

Correct Answer
Aman Soi Wed, 11/20/2013 - 00:11
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Hi Jagadish,


I was just referring the DOC which I have attached which says


Initial Trust List and Certificate Regeneration

If you change the IP address or the hostname of a server in a Cisco Unified Communications Manager release 8.0 or later cluster, the Initial Trust List (ITL) file and the certificates in the ITL are regenerated. The regenerated files do not match the files stored on the phones.


regds,

aman

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