Source note · Unified CM backup and upgrade
Before switching versions on IM and Presence Service nodes, the Unified CM nodes must be switched first: the publisher, then the subscribers.
Checked 2026-09-24
Before you switch versions on the IM and Presence Service nodes, you must first switch the Unified Communications Manager nodes, starting with the publisher node and then the subscriber nodes.
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- cluster upgrade order
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 guide
- Checked
- 2026-09-24
Sources
- Upgrade and Migration Guide for Cisco Unified Communications Manager and the IM and Presence Service, Release 15 and SUs - Planning the Upgrade — Cisco Systems · tier 2 current vendor documentation · Planning the Upgrade chapter, upgrade sequence requirements
Cite this note
APA
WarmTransfer. (2026, September 24). Unified CM backup and upgrade: source note cucm-backup-upgrade-imp-switch-after-ucm. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-backup-upgrade-imp-switch-after-ucm
BibTeX
@misc{warmtransfer-claim-cucm-backup-upgrade-imp-switch-after-ucm,
title = {Unified CM backup and upgrade: source note cucm-backup-upgrade-imp-switch-after-ucm},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-backup-upgrade-imp-switch-after-ucm},
note = {Source note cucm-backup-upgrade-imp-switch-after-ucm, checked 2026-09-24}
}