Nexus VPC w/ 4506 Access Switch

[chrihussey]

Configured two 5548 Nexus switches with VPC and a 4506 as an access switch with a port channel trunk uplink. All looks OK but when I fail one of the links from the 4506 connectivity is lost for 30 - 45 seconds. Almost like spanning tree re-converging. Didn't expect that to happen. Anyone know of any possible configuration / bug issues that might give these results?

[Philip D'Ath]

Do both ends show both members as being in the channel and "up"?

[chrihussey]

Yes the port channel is operational. Tripled checked that.

[Madhukrishnan Gopinathan Nair]

This is not expected though you can expect a minor disruption for the active flows on the link.

Ensure you have both the links added and working correctly in the port-channel.

n5k

sh port-cha summa

4500

sh ethercha summ