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Cisco Bug: CSCvu96455 - N9k - Fabric VPC - ARP probe received from peer flooded on access side with ARP suppression enabled

Last Modified

Jul 20, 2020

Products (1)

  • Cisco MDS 9000 NX-OS and SAN-OS Software

Known Affected Releases

9.3(4)

Description (partial)

Symptom:
ARP probes received on a VXLAN enabled VLAN may reflect/flood back in a VPC setup on same virtual port-channel it was received on. MAC flap will be observed on downstream switches/bridges.

Conditions:
VPC over Fabric Setup
VXLAN enabled VLAN with ARP suppression enabled
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