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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


Description (partial)

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.

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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