Source note · Unified CM backup and upgrade
When reverting a cluster, switch back the publisher first, then all backup subscriber nodes, then all primary subscriber nodes.
Checked 2026-09-24
Switch back the publisher node. Switch back all backup subscriber nodes. Switch back all primary subscriber nodes.
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- switch version
- 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 - Upgrade Tasks — Cisco Systems · tier 2 current vendor documentation · Upgrade Tasks chapter, revert (switch back) procedure
Cite this note
APA
WarmTransfer. (2026, September 24). Unified CM backup and upgrade: source note cucm-backup-upgrade-switch-back-order. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-backup-upgrade-switch-back-order
BibTeX
@misc{warmtransfer-claim-cucm-backup-upgrade-switch-back-order,
title = {Unified CM backup and upgrade: source note cucm-backup-upgrade-switch-back-order},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-backup-upgrade-switch-back-order},
note = {Source note cucm-backup-upgrade-switch-back-order, checked 2026-09-24}
}