Transport Layer - Freie Universität Berlin
Transport Layer - Freie Universität Berlin
Transport Layer - Freie Universität Berlin
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Timer Management with TCP: Retransmission Timer<br />
● Karn’s Algorithm<br />
● Very simple proposal, which is used in most TCP implementations (optional)<br />
● Do not update RTT on any segments that have been retransmitted.<br />
● The timeout is doubled on each failure until the segments get through.<br />
Timer<br />
Timer<br />
Client Server<br />
DATA #1<br />
ACK #1<br />
DATA #1<br />
ACK #1<br />
Univ.-Prof. Dr.-Ing. Jochen H. Schiller ▪ cst.mi.fu-berlin.de ▪ Telematics ▪ Chapter 8: <strong>Transport</strong> <strong>Layer</strong><br />
Is the ack for the<br />
first transmission<br />
or the second<br />
one?<br />
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