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Cisco Bug: CSCvu49080 - OpFlex intermittent disconnects due to an ARP refresh issue in a vPC scenario

Last Modified

Aug 27, 2020

Products (1)

  • Cisco Application Policy Infrastructure Controller (APIC)

Known Affected Releases


Description (partial)

Periodically, the OpFlex session disconnects. This Issue was seen in K8 integration with Cisco ACI due to an ARP refresh issue for the host VTEP address.

This issue occurs when the host is connected using a vPC.

For the VTEP IP address:
The ARP reply packet for ARP refresh (initiated by the leaf node) can be hashed to another leaf node. ARP is not updated within 25 minutes by any ARP packet from the host.
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