Question

In a Nexus 9000 vPC domain, a switch receives a broadcast frame on a vPC member port connected to a downstream switch. The peer-link is up and the vPC is fully operational. How does the vPC peer that receives the broadcast forward it, and what rule governs delivery to the far-side vPC member ports?

Accepted Answer

The frame is flooded across the peer-link, and the vPC loop-avoidance rule prevents it from egressing any vPC member port that is up on the peer switch.

Answer

The frame is flooded across the peer-link and then re-flooded out all vPC member ports on the peer to guarantee full delivery.

Answer

The frame is dropped at the peer-link because broadcast traffic is never allowed to traverse the vPC peer-link.

Answer

The frame is sent across the peer-link only when the destination VLAN has no orphan ports on the receiving switch.