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Cisco Bug: CSCur44729 - mac address is out of sync on vpc peers after HSRP flap

Last Modified

Feb 01, 2017

Products (1)

  • Cisco Nexus 6000 Series Switches

Known Affected Releases


Description (partial)

This is a timing issue while sending traffic when issuing the command "clear mac address-table dynamic" simultaneously on vpc peers creates a sync issue where one or more macs may not be deleted on both switches.

If traffic restarts on the same macs, then the switches should resync without issue.

Appears with over 10000 macs in the system, and while traffic is running, and "clear mac address-table dynamic" is used almost simultaneously on both vpc peers.

During this period a mac might be deleted, but then gets a new learn notification from the peer, then skips deleting this mac.
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