The data is forwarded from the network switch based on {HEAD ~ the processing} performed by {TAIL ~ the dedicated modules} 
performed by
The data is forwarded from the network switch based on { HEAD ~ the processing } performed by { TAIL ~ the dedicated modules }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL