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Cisco Bug: CSCvv11443 - Assertion Failed in MFIB causes Catalyst 9500 Switch to crash

Last Modified

Sep 08, 2020

Products (1)

  • Cisco Catalyst 9500 Series Switches

Known Affected Releases


Description (partial)

A Catalyst 9500 experiences a crash with the following error message:
%UTIL-3-TREE: Data structure error--attempt to remove an unthreaded node from a tree

Assertion failed: (wn != NULL), file ../VIEW_ROOT/cisco.comp/ipmulticast/mfib/mfib/src/master/mfib_master.c, line 2190

*Crashinfo file is generated

The issue hits when the user has vrf configuration with the name "Default" and enabled PIM on the interface attached to that vrf.
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