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Cisco Bug: CSCvh87544 - Ingress traffic dropped on 3850 due to ASIC exceptions "IGR_MISC_FATAL_ERROR"

Last Modified

Oct 25, 2019

Products (1)

  • Cisco Catalyst 3850 Series Switches

Known Affected Releases

Denali-16.3.5

Description (partial)

Symptom:
Traffic matching specific traffic pattern will be black-holed when ingressing on 3850. Affected traffic cannot be captured with SPAN or embedded packet capture.

Evidence of the dropped traffic will show as ASIC exception counter "IGR_MISC_FATAL_ERROR" for ASIC associated with affected interface:
 - (3.x.x code): show controllers ethernet-controller port-asic statistics exceptions switch # asic #
 - (16.x.x code): show platform hardware fed switch # fwd-asic drops exceptions asic #

Conditions:
Normal operation.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
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