TCP Timeout And Retransmission

RTO = A + 2*D = 0 + 2 * 3 = 6 seconds is how long we will wait before retransmit the SYN In this example, the first SYN is not acknowledged within the ≈ 6 seconds. Now use the RTO = A + 4*D = 0 + 4 *3 = 12 times a doubling exponential back off (21) so = 24 seconds. We now do get an ACK for the retransmission. ... ................
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