CS 244 ’20: Retransmission Timeout in TCP


Retransmission Timeout in TCP

In this paper, we compare the retransmission performance of various congestion control algorithms. Congestion control algorithms should seek to avoid unnecessary retransmission in order to minimize load on a network, but when packets are lost in a network, waiting too long to retransmit will in- crease latency and decrease throughput. We measure unnecessary retransmission rates and retransmission latency for TCP Reno, Vegas, Cubic, BBR, and Westwood in a simulated environment. We find that network bandwidth and latency have little effect on retransmission performance when held constant

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