So my customer now wants to use DNS on their CUCM as they use Microsoft Voicemail and the new version of that requires DNS resolution. I know that will change the license mac once I do it and will immediately make the CUCM un-useable as the license will now not be valid.
Is there a way around this and if not, what is the fastest way to get the license file rehosted?
You actually get a 30 day grace period where the old license will continue to work which should be plenty of time to re-host the license;
When you change any of the parameters that create the license MAC, the license that you obtained with it becomes invalid. You must request a rehosting of the license to obtain a valid license. The old license continues to work for a 30-day grace period.
To rehost your licenses, you must open a case with the licensing team. Contact the licensing team firstname.lastname@example.org.
During the grace period, you can change the settings back to the licensed values to make your original license valid again. If you need more than 30 days of grace period, change your settings back to the licensed values, then change them back to the new values that you want to use. You will get another 30- day grace period.
Yes, this is true for CUCM 8.x versions on "virtual" builds as well :) The doc I linked is for 8.0 where this grace period was first introduced.
You won't need to worry about this change on a MCS box as the license is based solely on the physical MAC of the Publisher.
Great answer from my buddy Rob as usual :) (+5 Rob).
To answer to the rehost license query, with new licensing portal www.cisco.com/go/license you can easily rehost licenses just from there if licenses were registered through your CCO.
From that portal, list all your licenses.
Select the license you want to rehost and click to rehost.
For re-hosting the license do I have to provide old license file to TAC ? We don't have old license file . Can we download it from ELM 9.1 ?
To rehost license, you should browse www.cisco.com/go/license.
Login with your CCO (if license were registered with your account)
Search for previously registered license, click on it and select reshost on the tail menu that appears.
On elm generate request and paste on Licensing portal page when requested.
how about this one... I did a p2v on my 8.6 cluster got new license files for my virtual host applied them.
my migration has been paused for two weeks I have sites on both virtual and physical servers.
when will my MCSs stop working?