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Cisco Bug: CSCtb30719 - ISSU from 4.1.5E3 to 4.2.1 failed due to %SYSMGR-2-GSYNC_ABORT

Last Modified

Oct 28, 2013

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases


Description (partial)


An upgrade from 4.1.x to 4.2.1 failure with following error msgs.

"Standby will be rebooted to force netboot and image download".
2009 Aug 10 12:23:43 cts-1 %$ VDC-1 %$ %SYSMGR-2-GSYNC_ABORT: Global sync aborted by signal.

Install has failed. Return code 0x40930040 (standby supervisor booted up with unexpected version).
Please identify the cause of the failure, and try 'install all' again.


This failure will happen only with specific configurations i.e when a
specific set of services (eg. only dot1x and cts) are enabled when 
the upgrade was performed.
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