> I have a couple of 3750 switch, that are running 12.2(20)SE3, > and I'm trying to use the command > Switch01#show idprom interface Gi2/0/7 The command reference says the command was introduced in IOS 12.2(20)SE1 and that the command applies only to 10G interfaces. If it works for anything but what is documented to work, I'd say is just luck. -A