CUCM 7.1(5a) to 8.6(2a) via Bridge Upgrade

[Daniel Hardjopranoto]

Hi guys,

I'm currently in the planning process to upgrade from CUCM 7.1(5a) on MCS server to CUCM 8.6(2a) on UCS C-Series via the "Bridge Upgrade" method whilst retaining current IP addr for all the CUCM nodes in the cluster.

As I understood it, the normal bridge upgrade path would be to:

- Install CUCM 8.6(2a) on the inactive partition on the current MCS hardware,

- Bring up the current CUCM cluster on 8.6(2a) and perform DRS backup

- Build UCS C-Series and install CUCM 8.6(2a) on the new CUCM cluster

- Perform DRS restore on the new cluster.

However I'd like to know if the following process is supported by Cisco?

- DRS Backup on existing cluster CUCM 7.1(5a)

- Build UCS C-Series and install CUCM 7.1(5a)

- Perform DRS restore on the new cluster

- Upgrade the new cluster to CUCM 8.6(2a)

Thanks for the comments and thoughts

Kind regards

Daniel

[Gordon Ross]

No, because CUCM 7 isn't supported on VMWare.

GTG

[Chris Deren]

As Gordon states it is not officially supported, but the reality is the MCS server may not support version 8.0, I personally have done couple of such upgrades successfully, and have not run into any issues.

Chris

[Daniel Hardjopranoto]

thanks guys for confirming