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Cisco Bug: CSCvv10337 - NCS-55A1-48Q6 - MLDP P2MP Core - dropping multicast packets across NPUs

Last Modified

Sep 03, 2020

Products (1)

  • Cisco Network Convergence System 5500 Series

Known Affected Releases

6.6.3.BASE

Description (partial)

Symptom:
The mc traffic stops flowing if the ingress and egress ports are on different NPUs, but it works if all ports are on the same NPU0. Unicast traffic can still flow in any case.
 
NPU0 <-> NPU0 is OK
NPU0 <-> NPU1 is broken 
NPU1 <-> NPU1 is OK

So it would seem that it fails when moving between NPUs.

Conditions:
NCS-55A1-48Q6 - MLDP P2MP Core - the problem is seen in 6.6.3, 7.0.2 , 721 and 712
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Bug Details Include

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