[e2e] New Reno

[F. Bouy]

Why nobody answering my question?

>May I know why step 1B in RFC 3782 is necessary? As far as I am concern if 
>the sender is not already in the Fast Recovery procedure, the Cumulative 
>Acknowledgement field will never covers more than "recover" [in step 1] 
>because it will never have the chance to execute step 1A.
>
>I may miss something here. If I am wrong, I would appreciate a 
>counterexample.

I have an extra question. The partial acknowledgement procedure in step 5 
requires that the cwnd be deflated by the amount of new data acknowledged. I 
understand the concern there, but if the amount of new data acknowledged is 
sufficiently large (say nearly a window of data), wouldn't it make the 
result negative? Although in this case it can be corrected to zero, we 
cannot send any segment since the cwnd is completely closed.

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