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Cisco Bug: CSCvv43038 - Unexpected ACFE notification observed when DS resiliency

Last Modified

Sep 03, 2020

Products (1)

  • Cisco cBR Series Converged Broadband Routers

Known Affected Releases

17.3.1

Description (partial)

Symptom:
Below message may occasionally print:

Aug 14 12:26:25.024 CST: %CBR-6-ACFE_NOTIFICATION: Unexpected topology change on Downstream-Cable 1/0/0. Corrected

Conditions:
DS Resiliency may change WB configuration. If it happens within ACFE update cycle (for the same LC), the race condition may be hit. The probability depends on a few factors like:
(1) Frequency of DS Resiliency events.
(2) ACFE execution period (configurable).
(3) System load: When load is high, ACFE update may be suspended and prolonged to longer time (e.g. 100ms).
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Bug Details Include

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