Transport Layer - Freie Universität Berlin
Transport Layer - Freie Universität Berlin
Transport Layer - Freie Universität Berlin
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TCP congestion control:<br />
additive increase, multiplicative decrease<br />
● Approach: increase transmission rate (window size), probing for usable<br />
bandwidth, until loss occurs<br />
● Additive Increase: increase CongWin by 1 MSS every RTT until loss detected<br />
● Multiplicative Decrease: cut CongWin in half after loss<br />
Additive Increase Multiplicative Decrease (AIMD)<br />
Congestion<br />
Window Size<br />
24 Kbytes<br />
16 Kbytes<br />
8 Kbytes<br />
Univ.-Prof. Dr.-Ing. Jochen H. Schiller ▪ cst.mi.fu-berlin.de ▪ Telematics ▪ Chapter 8: <strong>Transport</strong> <strong>Layer</strong><br />
Saw tooth behavior:<br />
Probing for bandwidth<br />
Time<br />
8.95
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