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 ...