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CPET/ECET 355. 11. Data Link Control and Protocols Data Communications and Networking Fall 2004 Professor Paul I-Hai Lin Electrical and Computer Engineering Technology Indiana University-Purdue University Fort Wayne www.ecet.ipfw.edu/~lin. Data Link Control and Protocols. Flow Control
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CPET/ECET 355 11. Data Link Control and Protocols Data Communications and Networking Fall 2004 Professor Paul I-Hai Lin Electrical and Computer Engineering Technology Indiana University-Purdue University Fort Wayne www.ecet.ipfw.edu/~lin 11. Data Link Control and Protocols - Lin
Data Link Control and Protocols • Flow Control • Error Control • Frame Transmission • Flow and Control Mechanisms • Stop-and-Wait Automatic Repeat Request (ARQ) • Go-Back-N ARQ • Selective Repeat ARQ • High-Level Data Link Control (HDLC) 11. Data Link Control and Protocols - Lin
11.2 Stop-And-Wait ARQ • Results of Data Frame Transmission • Normal operation • The frame is lost • The Acknowledgement is lost • The Ack is delayed 11. Data Link Control and Protocols - Lin
11.2 Stop-And-Wait ARQ • Normal Operation From p. 269, Figure 11.1 of Data Communications and Networking, Forouzan, McGrawHill 11. Data Link Control and Protocols - Lin
11.2 Stop-And-Wait ARQ • Lost Frame From p. 270, Figure 11.2 of Data Communications and Networking, Forouzan, McGrawHill 11. Data Link Control and Protocols - Lin
11.2 Stop-And-Wait ARQ • Lost ACK Frame From p. 270, Figure 11.3 of Data Communications and Networking, Forouzan, McGrawHill 11. Data Link Control and Protocols - Lin
11.2 Stop-And-Wait ARQ • Delayed ACK From p. 271, Figure 11.4 of Data Communications and Networking, Forouzan, McGrawHill 11. Data Link Control and Protocols - Lin
Summary Questions? 11. Data Link Control and Protocols - Lin