974 views
0 votes
0 votes
Consider instance of TCP AIMD protocol where the Window size at start is cwnd = 2, and the threshold is ssthresh = 16. Timeout occurs during the transmission of 7th packet. What is the value of cwnd at the end of 14RTT ?

1 Answer

1 votes
1 votes
this is the seq:

trans started ->       cwind

1 -> 2

2 ->4

3 ->8

4->16

5->17

6->18

7->19

new ssthresh = 9.5 => 9

new cwind = 1

8 -> 1

9->2

10->4

11->8

12->9

13->10

14->11 (14th transmission has started at cwind =11)

so when 14th transmission has ended we have 14RTT  and cwind increased from 11 to 12
edited by

Related questions

0 votes
0 votes
1 answer
1
komal07 asked Jan 10, 2016
1,078 views
consider "additive increase multiplicative decrease".one MSS is 512B.If TCP sender don't perceive path as congestedWhat will be congestion window size after 4RTTs provide...