The "Ping" command allows us to estimate the round trip delay between two machines. Using a computer on campus to ping the machine 206.190.36.45, we get the result shown below: Ping 206.190.36.45 with 32 bytes of data: Reply from 206.190.36.45: bytes = 32 time = 182ms How much of this 182 ms RTT time is queuing delay? To simplify the discussion, just assume signals propagate along a transmission link with two thirds the speed of light. The "Ping" command allows us to estimate the round trip delay between two machines. Using a computer on campus to ping the machine 206.190.36.45, we get the result shown below: Ping 206.190.36.45 with 32 bytes of data: Reply from 206.190.36.45: bytes = 32 time = 182ms How much of this 182 ms RTT time is queuing delay? To simplify the discussion, just assume signals propagate along a transmission link with two thirds the speed of light