When you upgrade a Cisco CUCM, before to launch the upgrade the system ask you if you want to restart on the new version or keep the current version and restart later.
Indeed, it’s a convenient way to limit service interruption and it’s easy to manage. Rollback is also easier to achieve.
Here some useful command for checking :
Check active version :
admin:show version active Active Master Version: 220.127.116.1100-9 Active Version Installed Software Options: cmterm-android_9.0.1v24.cop cmterm-7940-7960-sccp.8-1-2SR2.cop cmterm-iphone-install-130129.cop cmterm-devicepack18.104.22.16897-1.cop cmterm-69xx-sccp.9-3-3-2.cop cmterm-rim_409_8.6v1-sip.cop cmterm-8831-sip.9-3-3-5.cop cmterm-7945_7965-sccp.9-3-1SR1-1.cop cmterm-android_9.1.1v1.cop cmterm-devicepack22.214.171.12404-1.cop cmterm-7945_7965-sccp.9-3-1SR2-1.cop admin:show version show version active show version inactive
Check inactive version :
admin:show version inactive Inactive Master Version: 126.96.36.19900-1 Inactive Version Installed Software Options: No Installed Software Options Found. admin:
Switch from inactive to active version :
admin:utils system switch-version Active Master Version: 188.8.131.5200-1 Inactive Master Version: 184.108.40.20670-1 If you are switching to an earlier release, you must run:…
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