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Cisco Bug: CSCvu53533 - Nexus 93180YC// DROPS observed due to UC_DF_CHECK_FAIILURE on a VPC port

Last Modified

Jun 15, 2020

Products (1)

  • Cisco Nexus 9000 Series Switches

Known Affected Releases


Description (partial)

ARP is not being resolved for the server. The GW receives the ARP request and it replies.

The server never receives the ARP reply.

There is a VPC in place with Nexus 93180 with singled home FEXs. Server has active/standby interfaces.

When the ARP reply reaches the VPC domain to Peer 2, it is forwarded via Peer-link to Peer 1. This one drops the packet instead of sent it to server via FEX.

This should not be expected.
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