Re: slow-start with window scale option

From: Craig Partridge ([email protected])
Date: Mon Apr 20 1998 - 15:44:43 EDT


In message <[email protected]>, kim yong sin
writes:

>
>page 111 of TCP/IP illustrated volume2 say
>
>if (IF_QFULL(&ifp->if_snd)) {
> IF_DROP(&ifp->if_snd);
> splx(s);
> senderr(ENOBUFS):
>....
>
>As i know, queue limits is 50 packets.
>If window size is 200 packets (or more big), what will be happened in
>sender queue ???

Nothing. If the window size is really 200 packets that means the overall
round-trip delay is equal to 200 packet times divided the bottleneck link
speed. So the packets are spread out over the round-trip time. At any
time we only have a few packets waiting to be sent.

Craig Partridge



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