The routing data identifies one of the plurality of data ports through which {TAIL ~ the data frame} will exit the switching fabric to reach {HEAD ~ the destination device} 
The routing data identifies one of the plurality of data ports through which { TAIL ~ the data frame } will exit the switching fabric to reach { HEAD ~ the destination device }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD