interface command on physical interface or logical?

interface command on physical interface or logical?

I have an emetro connection terminated to one physical port on my core switch. However I also have it on a separate VLAN with a layer 3 vlan interface. I want to collect stats from this guy here. Would I apply the "ip route-cache flow" command on that VLAN interface or on the actual physical gigabit port of the connection?

                New to ADSelfService Plus?