Explain CSMA/CD technique with exponential back-off algorithm.

127views

written 7.7 years ago by

teamques10 ★ 68k

• modified 7.7 years ago

• Figure shows a flow chart for the CSMA/CD (Carrier Sense Multiple Access/Collision Detection) protocol.

enter image description here

• The station that has a ready frame sets the back off parameter to zero.

• Then it senses the line using one of the persistent strategies.

• It then sends the frame. If there is no collision for a period corresponding to one complete frame, then the transmission is successful.

• Otherwise the station sends the jam signal to inform the other stations about the collisions.

• The station then increments the back off time and waits for a random back off time and sends the frame again.

• If the back off has reached its limit then the station aborts the transmission.

• CSMA/CD is used for the traditional Ethernet.

ADD COMMENT EDIT