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Cisco Bug: CSCvi15939 - VPC peer loops back unknown unicast packets on VPC ports

Last Modified

Aug 13, 2019

Products (1)

  • Cisco Nexus 6000 Series Switches

Known Affected Releases

7.1(5)N1(0.999.154)

Description (partial)

Symptom:
If "clear mac address-table dynamic" is issued or there is a TCN received, the unknown unicast traffic received over the VPC Peer-link, will be looped back on vPC port-channels. This will generate mac move notifications on the switches connected to Nexus.

Conditions:
unknown unicast traffic is received over the vpc peer-link
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