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Cisco Bug: CSCvs69896 - SUP8 with 3.11.1 / WS-X4248-FE-SFP : insertion of SFP does trigger high CPU load

Last Modified

Jan 16, 2020

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases

3.10(1)

Description (partial)

Symptom:
Sup8-E#show process cpu sorted  
Core 0: CPU utilization for five seconds: 0%; one minute: 1%;  five minutes: 3%
Core 1: CPU utilization for five seconds: 0%; one minute: 1%;  five minutes: 5%
Core 2: CPU utilization for five seconds: 99%; one minute: 99%;  five minutes: 90%  <<< ISSUE IS HERE
Core 3: CPU utilization for five seconds: 0%; one minute: 0%;  five minutes: 1%

Conditions:
Insertion of a SFP (OEM or Cisco, BX or FX...) does trigger a high CPU load.
A sole SFP is sufficient to repro the issue.
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Bug Details Include

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