{HEAD ~ A command} is sent from {TAIL ~ the FIAC} to the FIA to identify received FCoE frames to replace the source and destination Ethernet MAC addresses 
is sent from
{ HEAD ~ A command } is sent from { TAIL ~ the FIAC } to the FIA to identify received FCoE frames to replace the source and destination Ethernet MAC addresses
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH