{TAIL ~ The switch device} is arranged to route {HEAD ~ paths} between the second interface and the first interface 
{ TAIL ~ The switch device } is arranged to route { HEAD ~ paths } between the second interface and the first interface
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH