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Summary of Lecture on Friday Oct 15
Four basic mechanisms for TCP congestion control are: slow start, congestion avoidance, fast retransmit, and fast recovery. We talked about fast retransmit before (where a retransmission is done after the 3rd duplicate ACKs). All four mechanisms are discussed in a … Continue reading
Posted in Lectures
Tagged ACK division attack, congestion avoidance, congestion control, fast recovery, slow start, TCP
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A simple model for TCP congestion control
Network congestion is unavoidable under the “best-effort” paradigm. There are several ways to deal with congestion. TCP chooses to dynamically adjust the sending rate. When there’s congestion, reduce the rate; otherwise increase the rate. We want the total load on … Continue reading
Posted in Lectures
Tagged additive increase, AIMD, congestion control, Lectures, multiplicative decrease, system control model, TCP
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