Hey guys, trying to do question 12 here, but I'm a bit stumped. 12 . What is the throughput (bytes transferred per unit time) for the TCP connection? Explain how you calculated this value. The Computer Networking book states that the increase of w happens when a loss event occurs (which doesn't in the provided TCP trace, so that can be ignored (I think?)) Is the final formula: w/RTT ? If it is, then how do I find what w and RTT are. Are these the differences between the first TCP and last ACK? asked 01 Mar '14, 18:35  rainman |
One Answer:
Some hints and some questions.... Hint #1: RTT calculation If you draw a picture of the TCP 3-way handshake (client --> router --> router --> server), what could the RTT (round trip time) be, if you look at the SYN and SYN-ACK frames? How can you use that knowledge to calculate the RTT in a capture file, if the trace was taken on (or near) the client? What changes if you've taken the trace on (or near) the server? Question(s) #1: w? How is w defined in the book? In some papers I've read, w is the congestion window. Is it the same in the book? If so, did you find a definition of the congestion window in the book or with the help of Mr. search engine? If no, please search it. Then: How would you describe it in your own words? Regards answered 02 Mar '14, 07:37  Kurt Knochner ♦ edited 02 Mar '14, 07:37 |
What Lab are you referring to? What is the "Computing Networking book"?
http://www.amazon.co.uk/Computer-Networking-A-Top-down-Approach/dp/0273768964/ref=sr_1_fkmr0_1?ie=UTF8&qid=1393771457&sr=8-1-fkmr0&keywords=computer+networking+kurose+rose
The lab is called TCP Lab from the book above^