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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

7.0(3)I7(7)

Description (partial)

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

The server never receives the ARP reply.

Conditions:
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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Bug Details Include

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