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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

7.1(4)

Description (partial)

Symptom:
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

Conditions:
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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