Downtime for upgrading CUCM

Unanswered Question
Jun 29th, 2009

I have a three server CUCM deployment running 6.1.1. I am upgrading to 6.1.3.

I currently have 6.1.3 installed on all three servers' inactive partitioin.

I understand I need to reboot the pub in the new version, wait 10 minutes or so, then do same procedure for sub 1 then sub 2.

My question is will I experience any downtime during this other than phones re-registering between servers?

Thanks

I have this problem too.
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Jaime Valencia Mon, 06/29/2009 - 10:27

If you're using EM or all services are pointing to X server. When you reboot that one those will be down as well (unless you have redundancy on those of course).

Other than that, phones will simply go to the next option of CUCM group while primary server comes back fully online.

HTH

java

if this helps, please rate

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