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Local Area High Speed Networks by Dr. Sidnie Feit

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Summary Points

  • Classic Carrier Sense Multiple Access with Collision Detect (CSMA/CD) Ethernet also is called half-duplex Ethernet. At any time, only one frame should be in transit.

  • Frame transmissions must be separated by a time interval thatcorresponds to 96 bit times; this is called the interframe gap or interpacket gap.

  • The size of the interframe gap between frames can shrink as the frames pass through a repeater.

  • After detecting that a collision has occurred, a sender must continue to transmit 32 additional jam bits.

  • A station that has participated in a collision must remain silent for a random amount of time before attempting to transmit again. The delay period is a multiple of a parameter called the slot time.

  • An Ethernet MAC frame starts with ...

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