# Defining a loopback between port A and B is as follows: # Port = <PortA>,<PortB>,<delay>,<queue size>,<element (packet) size> [Defaults] Port= 0,1,1,10,1500 Port= 501,502,0,10,1500 Port= 503,504,0,10,1500 Port= 505,506,0,10,1500 Port= 507,508,0,10,1500