The apparatus further includes a transmitter for transmitting the received data packet to the determined destination when {HEAD ~ no other switch controller} intends to transmit to {TAIL ~ the determined destination} 
intends to transmit to
The apparatus further includes a transmitter for transmitting the received data packet to the determined destination when { HEAD ~ no other switch controller } intends to transmit to { TAIL ~ the determined destination }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL