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Cisco Bug: CSCvv75698 - 2960L gets hung with traces and error logs

Last Modified

Oct 19, 2020

Products (1)

  • Cisco Catalyst 2960-L Series Switches

Known Affected Releases

15.2(5)

Description (partial)

Symptom:
2960L running 15.2(7)E2 gets hung with Error logs. The only recovery option is to power cycle the switch 
%SYS-2-INTSCHED: 'sleep for' at level 4  -Process= "LearningTask", ipl= 4, pid= 75
-Traceback= 24A93E8z 1688FDCz 1BE2EB0z 1C37938z

Conditions:
2960L running 15.2(7)E2 ios version
Traffic coming on interface having port security or dot1x configuration
When traffic from multiple (10-12) mac address comes to the switch at once from two different interfaces
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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