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

[Lelio Fulgenzi]

I think some of the Cisco folk confirmed that running different OS versions would be ok.
  ----- Original Message ----- 
  From: Ed Leatherman 
  To: Lelio Fulgenzi 
  Cc: cisco-voip at puck.nether.net 
  Sent: Tuesday, July 18, 2006 7:59 PM
  Subject: Re: [cisco-voip] live updates on subscriber - anyone tried it?


  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:
      a.. stop callmanager services and have phones register to another subscriber during a short maintenance window 
      b.. update O/S during the day 
      c.. start callmanager services during a short maintenance window
    Some questions:
      a.. are there any other services we should stop to make this as transparent as possible? 
      b.. 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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  -- 
  Ed Leatherman
  IP Telephony Coordinator
  West Virginia University
  Telecommunications and Network Operations 
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