A network switch is disclosed having {HEAD ~ at least one data port interface} for receiving {TAIL ~ data} and at least one link interface configured to transmit the data between the network switch and other network switches 
A network switch is disclosed having { HEAD ~ at least one data port interface } for receiving { TAIL ~ data } and at least one link interface configured to transmit the data between the network switch and other network switches
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH