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Mellanox Switch gets stuck when one MLAG port is shutdown

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Applies to

  • Mellanox SN2010
  • Onyx version 3.9.3202

Issue

On a MLAG Cluster Pair when one of the port channels is shutdown,  the following messages are displayed and the switch gets stuck afterwards and becomes unresposive:
 
SWMLXNTP [mlag-ntp: standby] (config interface mlag-port-channel 15) # shut
^C<Ctrl+C>
Operation in progress cannot be cancelled.  It will continue in the background, and you will be notified when it is complete.
SWMLXNTP [mlag-ntp: standby] (config interface mlag-port-channel 15) #
SWMLXNTP [mlag-ntp: standby] (config interface mlag-port-channel 15) # exit
SWMLXNTP [mlag-ntp: standby] (config) # sh mlag
% Cannot do this now; previous operation still in progress.

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