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Cisco Bug: CSCuo00525 - N9k: Some Mcast traffic not converging after the port-channel restore

Last Modified

Aug 28, 2020

Products (5)

  • Cisco Nexus 9000 Series Switches
  • Cisco Nexus 9396PX Switch
  • Cisco Nexus 9504 Switch
  • Cisco Nexus 9508 Switch
  • Cisco Nexus 93128TX Switch

Known Affected Releases


Description (partial)

Null registers not sent by FHR if system is also lasthop router sometimes if receiver links are flapped.

This is timing issue. You need to flap all the receiver links at the same time when source traffic is started. And system has to be lasthop and firsthop router.
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