The issue we're having is that the 4506 doesn't route traffic to one specific subnet properly. Traffic coming from subnet 172.30.30.0/24 on the 4506 side to 10.0.10.0/24 on the Nexus side should be routed through the port channel. We have a static ip route entry defining that. What is actually happening is the 4506 is routing traffic to 10.0.10.0/24 to the gateway of last resort. We can't figure out why.
Attached is the Config from the Nexus and 4506, and also a quick pdf of the topology.