vlan ON 2nd port

It would be  nice if we could add a vlan tag on the 2nd ethernet port.  We also have a scenerio where we wanted to piggy back another sm off the 2nd port and have it hop over to another sm.  We  were not able to put a vlan on both SM's.  Our solution was to put the vlan on the remote SM and we put the other vlan on a switch.