[cisco-voip] Upgrade OS / CUCM Software

[Jonathan Charles]

Do the Pub first, then each sub...

You can get away with doing the OS updates all at once, but the Pub
CCM database must be upgraded before the Subs...

Also, do NOT (repeat NOT) patch the Pub until ALL subs are upgraded...



Jonathan

On Jan 31, 2008 1:27 AM, voip at mrga.ch <voip at mrga.ch> wrote:
> Hello Group
>
> I have to update our Callmangager Cluster (1 pub / 5 sub) with the newest OS
> (2000.4.4a SR12) and Callmanager (4.2(3) SR3).
>
> In what order do I have to upgrade. First update all OS on all servers and
> then all CM? Or server by server OS and CM and then go on to the next
> server?
>
> Thanks for feedback
> Reto
>
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