03-12-2010 10:18 AM - edited 03-15-2019 09:45 PM
I have the following configuration for Call Manager
Centralized Call Manager
-Publisher - MCS7835, CUCM 7.1.2 7 remote site gateways. CUCM 7.1.2
-Subscriber - MCS7825
-Subscriber - MCS7825
I want to get to this:
-Publisher - MCS7835, CUCM 7.1.3 7 remote site gateways. CUCM 7.1.3
-Subscriber - MCS7835
-Subscriber - MCS7835
So I need to replace the 7825's with 7835's and go to CUCM 7.1.3
I can see two ways to go:
Method 1
*build the 2 new subs at version 7.1.3
*Upgrade Pub to 7.1.3 (make sure we stay with current phone loads)
*Add sub3 to cluster
*Update cm group to include sub3
*Shut down sub1
Phones re-register to Pub
Then phones re-register to sub3
Remove sub2 from group and add sub4
Change gateways to point to sub3
*Normal upgrade test plan
Method 2
*build 2 new subs at version 7.1.2
*shut down sub1 (MCS7825)
*phones register to pub
*replace sub1 with MCS7835 as sub1 and same IP
*repeat with new sub2
now have pub and 2 subs - all MCS7835 and at version 7.1.2
upgrade the cluster to 7.1.3
Would one method preferred over the other???
Thanks,
Bill
03-12-2010 10:29 AM
Hi Bill,
You will probably get some various responses here as I don't think there
is necessarily a "right" or "wrong" way here. I would opt for method number
2, as I really believe in the old "KISS" principle with this stuff. Adding in too
many variables can really become a problem when trying to troubleshoot any
issues. So I would go for the two-step approach
Just my 2 cents!
Cheers!
Rob
03-12-2010 10:40 AM
Much less work to go with Option 2 and lot less swinging around of configs. That's your ticket.
Hailey
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03-12-2010 02:26 PM
Ok - I just figure it doesn't hurt to hear from people who have more experience in doing these. I wasn't sure if you might create a problem by swapping one server for another and giving it the same name and IP.
Thanks,
Bill
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