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Cisco Bug: CSCuj85007 - vPC+: After Reload FEX MAC is not Synced Resulting in Traffic Black-Hole

Last Modified

Nov 27, 2020

Products (1)

  • CiscoPro Workgroup EtherSwitch Software

Known Affected Releases

6.0(2)

Description (partial)

Symptom:
MAC address entries may not be synced or experience delay to be synced to the peer switch which causes traffic to be black-holed until the entries are synced.

Conditions:
This can occur for both spine and leaf switches in a FabricPath deployment running vPC+ NIF or HIF interfaces:

- For Nexus 5500/6000 (when switch is reloaded)
- For Nexus 7000 (when switch is resuming from reload)
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