Suppose that when a TCP segment is sent more than once, we take SampleRTT to be the time between the most recent transmission and the ACK, as in Figure 5.10(b). Assume, for definiteness, that TimeOut = 2 × EstimatedRTT. Sketch a scenario in which no packets are lost but EstimatedRTT converges to one-third of the true RTT, and give a diagram illustrating the final steady state.

Figure 5.10)

Transcribed Image Text:

Sender SampleRTT Original transmission Retransmission ACK Receiver Sender (a) SampleRTT U Original transmission ACK Receiver Retransmission (b)