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Cisco Bug: CSCvi23795 - Incomplete MAC information in ARP entries on MAC address update/interface creation on peer side

Last Modified

Oct 20, 2019

Products (1)

  • Cisco IOS XRv Router

Known Affected Releases

6.4.1.BASE 6.5.1.BASE

Description (partial)

Symptom:
bundle vlan has no peer info or wrong mac address info in the show arp, therefore seeing around 30%-60% traffic drop, and will be recovered after arp-cache timeout (within several hours)

Conditions:
1k-2k scale bundle vlan configured with MAC address on main bundle interface cannot update the MAC info properly in the show arp.
The router has wrong mac entries will see the arp policier punt drop in dpa
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