Re: Possible TCP Problem with RH6.2 talking to Solaris2.6/2.7 (fwd)

From: shane (
Date: Thu May 04 2000 - 07:55:51 EST

Large window support was on last I checked on solaris, but I will check.

I will also copy a list of the tuned options on the solaris side, these
options have been reqested by other vendors to improve the performance of
things like Firewall-1 and apache, window sizes and the like, I will
forward that to the list when I get to work.

The build I am running now is the kernel off the RH6.2 disk, I have not
rebuilt it, It looked like it had that option already enabled, am I wrong?

> > > The Sun used a larger window (64K versus 32K).
> >
> > Check that Networking options ... IP: Allow large windows is enabled in
> > your kernel build. This could be related to case 2?
> We will only offer 32K windows if the box the other end offers no window
> scaling either way. This is because we care about interworking with old
> equipment with sign handling bugs.
> Turning on large window support gives a bigger window but while that
> reduces the number of zero window stalls it doesnt change total throughput
> > Using a larger receive window on the Linux end could help, anyway. Any
> > ideas WHY those packets were dropped, BTW?
> This is the important one I think

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This archive was generated by hypermail 2b29 : Sun May 07 2000 - 21:00:14 EST