Chapter Nine New revised

Chapter Nine New revised - CSC 311 IEEE STANDARD 802.3...

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CSC 311 IEEE STANDARD 802.3 ETHERNET Common Bus topology Uses CSMA/CD Named after “ether”, the imaginary substance many once believed occupied all of space. Possible Ethernet connection terminators
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CSC 311 Transceiver is connected to cable using a vampire clamp. Transceiver create interface between cable and computer Transmit bits on cable using CSMA/CD contention Control Transceiver cable (AUI) attachment unit interface cable Consisted of 5 twisted pair, two used to send data and control info to computer, two used for receiving data and control info, fifth pair could be used to connect power source and ground.
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CSC 311 Cable connects to pc using NIC, network interface card. NIC contains logic necessary to buffer data, Also: error checking creates frames determine when to transmit following collisions recognize frames addressed to its computer
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CSC 311 Steps in sending data to another computer execute network software to put packet of info in computer’s memory NIC gets packet, creates frame, than waits for signal from transceiver which is monitoring line segment waiting for chance to send When transceiver detects quite cable, it signals NIC to send frame to transceiver. Transceiver transmits and listens for collision. If one occurs, NIC is notified and NIC executes exponential backoff algorithm. Transceiver on receiving end monitors cable traffic,
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This note was uploaded on 02/10/2012 for the course CSC 311 taught by Professor Whitston,h during the Spring '08 term at S. Alabama.

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Chapter Nine New revised - CSC 311 IEEE STANDARD 802.3...

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