A network switch according to {TAIL ~ claim} 1 wherein said {HEAD ~ at least one data port interface} is configured to receive data which includes a packet having headers, said portion of said data comprises a parsed field derived from said headers.1 
A network switch according to { TAIL ~ claim } 1 wherein said { HEAD ~ at least one data port interface } is configured to receive data which includes a packet having headers , said portion of said data comprises a parsed field derived from said headers.1
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH