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SubjectRe: Poor TCP Performance 2.4.0-10 <-> Win98 SE PPP
"David S. Miller" wrote:
> Date: Mon, 06 Nov 2000 22:44:00 -0800
> From: Jordan Mendelson <>
> Attached to this message are dumps from the windows 98 machine using
> windump and the linux 2.4.0-test10. Sorry the time stamps don't match
> up.
> (ie. Linux sends bytes 1:21 both the first time, and when it
> retransmits that data. However win98 "sees" this as 1:19 the first
> time and 1:21 during the retransmit by Linux)
> That is bogus. Something is mangling the packets between the Linux
> machine and the win98 machine. You mentioned something about
> bandwidth limiting at your upstream provider, any chance you can have
> them turn this bandwidth limiting device off?

It actually turns out that that problem with bandwidth was fixed
yesterday, so this can not be the problem here and yes, is
a linux box. :)

> Or maybe earthlink is using some packet mangling device?
> It is clear though, that something is messing with or corrupting the
> packets. One thing you might try is turning off TCP header
> compression for the PPP link, does this make a difference?

Actually, there has been several reports that turning header compression
does help.

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