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Cisco Bug: CSCtd69640 - Downtime During CUCM Upgrade Documentation

Last Modified

Jul 07, 2017

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases


Description (partial)

While upgrading a CUCM cluster, if the Pub is upgraded and switched versions to the new version, then there is a downtime untill all Subs are upgraded and switched to the new version

Eg. Pub is upgraded from 6.1.2 to 6.1.4 and switched version. Now upgrade on the Subs is starting instead of Subs being upgraded simultaneously.
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