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Cisco Bug: CSCuw21594 - VSS crash from 'sh sw virtual link counters' after removalofchannelgroup

Last Modified

Mar 09, 2018

Products (1)

  • Cisco Catalyst 4500 Series Switches

Known Affected Releases

15.1(2)SG3.0.19

Description (partial)

Symptom:
Primary switch configured in VSS may crash within IOSd when using 'show switch virtual link counters' after the port channel goes down. The following maybe seen from the terminal:

>>
Moving an interface from vsl to non-vsl, while system is running, might cause loop in the network. So, interface is being put to admin down state. Please execute `no shutdown` on the interface to remove admin down state
>>

Conditions:
This is seen in a VSS setup with etherchannel manually configured on both sides of the port channel. Using 'show switch virtual link counters' following removal of the channel-group from all ports in the bundle can trigger this crash.
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