Preview Tool

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

Last Modified

Sep 13, 2018

Products (1)

  • Cisco Catalyst 4500 Series Switches

Known Affected Releases


Description (partial)

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

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.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.