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Cisco Bug: CSCuj88772 - FSC failures can trigger missed heartbeats resulting in DPC card resets

Last Modified

Dec 26, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

14.1(10) 14.1(500)

Description (partial)

When an FSC card fails on the system, it appears to have an impact on the fabric which results in potential missed heartbeats to some DPC cards. When this occurs, the system thinks there is an issue with the DPC card and resets it. If multiple DPC cards experience a missed heartbeat at the same time, this could result in subscriber impact.

FSC card failures can trigger errors in fabric chips on DPC card
DPC fabric chip error handling performs fabric chip ingress quick recover procedure
Bug in ingress quick recovery library can cause fabric errors which could lead to heartbeat failures.
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