In selective repeat protocol, the window size must be less than or equal to half the size of the sequence number space for the SR protocol. Why is this so, and how?
4 Answers
This link has an animation that walks through each of the steps of the protocol to explain why the window size matters:
http://webmuseum.mi.fh-offenburg.de/index.php?view=exh&src=73
Basically, if the window size is too high, then corruption in transmission can cause incorrect assumptions and lead to data corruption in the final result.
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