Explore Cisco NX-OS vPC failover

Two Nexus leaf switches connect to the same access switch through a virtual port channel.

The leaf switches use a peer link and a separate keepalive link.

Check that the peer adjacency has formed and that both the peer link and the virtual port channel are up.

On the access switch, one LACP bundle contains a link to each leaf.

Ping between the hosts to confirm the starting path across VLAN ten.

Shut down the access-facing link on leaf one and leave the peer link up.

The local virtual port channel shows down while the peer link stays up.

Ping again to check reachability through the remaining leaf link.

Bring the disabled interface back up and confirm the virtual port channel recovers.

Run one last ping to verify that the restored topology can still carry traffic.