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CUCM Update Procedure

Peter Fiers
Level 1
Level 1

‎02-10-2018 04:23 AM - edited ‎03-17-2019 12:10 PM

Hi,

we're going to update CUCM and IMP from ver. 11.5.1.13054-1 to ver. 11.5.1.14900-11 (SU4). Before switching versions, does the order of the installation of the new software on the different systems like publisher and subscribers matter or can we do the installation in parallel on every system?

 

Thanks for advising.

Peter

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Mohammed al Baqari
Level 11
Level 11

‎02-10-2018 09:25 AM

Yes it matters. You can't install on SUB if not installed in PUB even if in
inactive partition. Now in your particular scenario it might work as you
are in the main train. Check the compatibility matrix.

Also, I suggest don't reboot after installation. Make sure that you
complete installation on all inactive partitions then reboot.
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