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CSCvr04588 - Cisco Nexus 3132Q-V Buffer Wedge/Lockup: All Control-Plane Protocols Failing & Ports Unable to Pass Traffic

Last Updated:

Applies to

  • Cisco Nexus 3132Q-V
  • NX-OS 7.0(3)I7(6) or earlier
  • Cluster or MetroCluster backend


  • A Cisco Nexus 3132Q-V cluster switch may experience a condition in which the ingress/egress buffers become "stuck" (unable to dequeue frames). 
  • This will lead to a condition where, depending on the specific queue experiencing the issue, all traffic may fail to pass in or out of the devices.
  • The nodes in the cluster encounter CLAM panic:

PANIC: Received PANIC packet from partner, receiving message is (Coredump and takeover initiated because Connectivity, Liveliness and Availability Monitor (CLAM) has determined this node is out of quorum.) in SK process gop_eq_thread on release 9.8P11 (C) on Thu May 18 20:22:14 UTC 2023

  • This defect might cause a disruption of cluster service, leading to an outage.


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