CODEWITHSUNDEEP
tcpcongestion-control
Walter
Walter

Reputation: 125

TCP congestion control - Congestion avoidance algorithm

Does congestion avoidance algorithm start with cwnd>=ssthresh or only with cwnd>ssthresh?

cwnd=Congestion windows ssthresh=slow start threshold

Upvotes: 1

Views: 451

Answers (2)

M.A. Yousuf
M.A. Yousuf

Reputation: 13

Actually it depends on the algorithm. There are a lot of congestion control algorithm like TCP Tahoe, TCP Reno, TCP Westwood etc. You can check them https://en.wikipedia.org/wiki/TCP_congestion_control here. In Reno, if cwnd <= ssthresh then slow start else congestion avoidance.

Upvotes: 1

FormerNcp
FormerNcp

Reputation: 126

Implementations can choose.

https://www.rfc-editor.org/rfc/rfc5681: When cwnd and ssthresh are equal, the sender may use either slow start or congestion avoidance.

Upvotes: 1

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