lec8 - EECS 161 - Introduction to Computer Networking Scott...

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Unformatted text preview: EECS 161 - Introduction to Computer Networking Scott Jordan Local Area Networks / Ethernet UCI University of California, Irvine CSMA-CD protocol: (1) Wait until channel is idle. (2) Transmit & listen. (3) If collision, stop transmitting packet, transmit "jam signal", wait random delay, and go to step (1). EECS 161 - Introduction to Computer Networking Scott Jordan Local Area Networks / Ethernet UCI University of California, Irvine CSMA-CD protocol: (1) Wait until channel is idle. (2) Transmit & listen. (3) If collision, stop transmitting packet, transmit "jam signal", wait random delay, and go to step (1). Random delay: Let 1 "slot" = 512 bit times Upon 1 st collision, randomly choose among {0,1} slot delay. Upon 2 nd collision, randomly choose among {0,1,2,3} slot delay. ... Upon m th collision, randomly choose among {0,1,...,2 m-1} slot delay. ... Upon 10 th-15 th collision, randomly choose among {0,1,...,1023} slot delay....
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This note was uploaded on 03/28/2009 for the course CSE 120A taught by Professor Healey during the Spring '08 term at UC Irvine.

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lec8 - EECS 161 - Introduction to Computer Networking Scott...

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