TCP Congestion Avoidance

/* slowstart is over */

/* Congwin > threshold */

Until (loss event) {

every w segments ACKed:

Congwin++

}

threshold = Congwin/2

Congwin = 1

perform slowstart

Congestion avoidance

1

1: TCP Reno skips slowstart (fast

recovery) after three duplicate ACKs

Previous slide

Next slide

Back to first slide

View graphic version