[cisco-voip] live updates on subscriber - anyone tried it?

[Wes Sisk]

I've yet to see any specific issue root caused to be different OS  
versions between servers in a cluster.

different CM versions will cause problems
different SQL versions will cause problems.

/Wes
On Jul 18, 2006, at 7:59 PM, Ed Leatherman wrote:

My question, to which I dont have an answer but i'm sure someone else  
on the list does: is there any ramifications to running different OS  
levels across your cluster during your upgrade process (assuming  
several days to update all the nodes in your systems then at 1 per day)

Also, which server is your TFTP server, or do you have several. not  
sure how much of the phones configurations they store incase they  
cant talk to a service.

Personally, i'd be just waiting for the rest of the cluster to  
implode that same day... murphies law and all that :)

On 7/18/06, Lelio Fulgenzi <lelio at uoguelph.ca> wrote:
Just wondering if anyone has tried updating the O/S on a subscriber  
during business hours, obviously after stopping the CallManager  
service and forcing phones to register to another subscriber first.  
Our goal is to try an minimize the amount of after hours work that is  
involved in maintaining this new fancy system of ours.

Ideally, we'd see the following happening:
stop callmanager services and have phones register to another  
subscriber during a short maintenance window
update O/S during the day
start callmanager services during a short maintenance window
Some questions:
are there any other services we should stop to make this as  
transparent as possible?
does the Maximum Phone Fallback Queue Depth service parameter help in  
any way in getting phones to register quicker on the next callmanager  
in line?
Any comments would be extremely welcome.

------------------------------------------------------------------------ 
--------
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
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"I can eat fifty eggs." "Nobody can eat fifty eggs."

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-- 
Ed Leatherman
IP Telephony Coordinator
West Virginia University
Telecommunications and Network Operations
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