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Cisco Bug: CSCvv42707 - NCS-55A1-36H-SE-S ILKN link going down

Last Modified

Oct 22, 2020

Products (2)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco IOS XR Software

Known Affected Releases


Description (partial)


Traffic fwding will not happen on the interfaces exhibiting behaviour where "FLP_ELK_ERROR" drops are reported post node reload.
Interlaken ("ILKN") link between NPU and TCAM shows no Signal Lock ("-" not "+" for 'diag nif').

Platform impacted: NCS-55A1-36H-SE-S system (4 x {NPU, OP TCAM } ).

Conditions: After powercyling the router, Software upgrade, VM reload.
Even though link goes down post reload, traffic drops may not be seen immediately as that particular TCAM to which link is down isnt being used
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