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Cisco Bug: CSCun37067 - Clipper/F2 dynamic mac addresses missing from MAC table after link flap

Last Modified

Jan 28, 2017

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases

6.2(6)S23

Description (partial)

Symptom:
In rare circumstances some dynamic MAC entries are missing for certain port-groups (F2 and F2e modules) after reload or link-flap.

Conditions:
A timing issue may cause MAC to be removed from hardware L2 forwarding table which leads to unknown Unicast flooding.
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