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    Chapter 11 Chapter 11 Presentation Transcript

    • Chapter 11 Data Link Protocols • Asynchronous Protocols • Synchronous Protocols • Character-Oriented Protocols • Bit-Oriented ProtocolsWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-1WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-2WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-3 XMODEM XMODEM is Half Duplex stop-and-wait ARQ protocol. Transmissison begins after sending NAK frame by receiver. CAN signal aborts the transmission.WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-4 OR Byte oriented protocolsWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-5 BSC-BINARY SYNCHRONOUS COMMUNICATIONWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-6 Simple BSC FrameWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-7 A Frame with HeaderWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-8 Multiblock FrameWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-9 Multiframe TransmissionWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-10 Control Frame Contains control characters but no data. Used to send commands or get information from other device.WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-11 Control FramesWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-11-continued Control FramesWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-11-continued Control FramesWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-12 Byte Stuffing DATA LINK ESCAPEWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-13WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-14 HDLC ConfigurationWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-14-continued HDLC ConfigurationWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-14-continued HDLC ConfigurationWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-15 HDLC Modes NRM- NORMAL RESPONSE MODE ARM- ASYNCHRONOUS RESPONSE MODE ABM- ASYNCHRONOUS BALANCED MODEWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-16 HDLC Frame Types INFORMATION FRAMEWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-16-continued HDLC Frame Types SUPERVISORY FRAMEWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-16-continued HDLC Frame Types UNNUMBERED FRAMEWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-17 HDLC Flag FieldWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-18 Bit StuffingWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-19 HDLC Address FieldWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-20 HDLC Control FieldWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-21 Poll/FinalWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-22 HDLC Information Field Combining data to be sent with acknowledgement of the frame Received in one single frame is called piggybacking.WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-23 HDLC FCS FieldWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-24WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-25 Use of P/F FieldWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-25-continued Use of P/F FieldWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-25-continued Use of P/F FieldWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-25-continued Use of P/F FieldWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-25-continued Use of P/F FieldWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-26 U-Frame Control FieldWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-26-continued U-Frame Control FieldWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-27 Polling ExampleWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-28 Selecting ExampleWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-29 Peer-to-Peer ExampleWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
    • Figure 11-29-continued Peer-to-Peer ExampleWCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998