SOLVED?: Re: ppp problem with 2.2.X kernel; ok with 2.0.36
I had limited success improving the ppp performance (stalling after a very short
transfer) by removing the call to bsd_comp.o in
/lib/modules/2.2.13/net/modules.dep, so I tried the implied suggestion below:
another ISP which, hopefully, didn't use Ascend routers using the "lame ...
STAC/MS-STAC/LZ-anything compression". I was using Concentric. Got a new
account, and voila! It works great (so far). Will have to try for a few days
before I decide it's fixed.
Is it true that there is some incompatibility between the new ppp modules and
these compression methods?
Michael Heyes
_____________________________________________
>Re: Resolved: Poor PPP performance in 2.2.x
>Matthias Andree (mandree@sx1.HRZ.Uni-Dortmund.DE)
>Thu, 25 Feb 1999 23:59:06 +0100
>On Thu, Feb 25, 1999 at 04:43:08PM -0600, Stephen Foskett wrote:
>> Why were so few people seeing the problem? Perhaps my ISP (Concentric.net)
>> uses this compression module and many others don't. Perhaps many others
>> have disabled this module. Perhaps it's something about the system yet...
>Many ISP use Ascend dial-in routers which support only the lame ('coz
>proprietary) STAC/MS-STAC/LZ-anything compression which Linux-ppp does
>not support, while the Ascend cannot be fitted with PPP-Deflate or
BSD-Compress either. :-(
>I'd really like to see compatibility with this Ascend compression to
>speed up general connection throughput, while not using strange
>squid-ssh-hacks. I bugged the dialin-admin at Dortmund University quite
>a bit, he finally gave up on Ascend, he said there was nothing he could
>do while he really would like to. Not sure if bugging the Deutsche
>Telekom AG will help, since they seem to "support" only Windows as
>well.
--
Matthias Andree
Robert Varga <robi@piros.zold.net> on 11/09/99 02:09:43 PM
To: Brian Servis <servis@purdue.edu>
cc: Mike Heyes/LincolnFP/BerisfordPlc@BerisfordPlc,
debian-user@lists.debian.org
Subject: Re: ppp problem with 2.2.X kernel; ok with 2.0.36
On Tue, 9 Nov 1999, Brian Servis wrote:
> *- On 9 Nov, mheyes@lincolnfp.com wrote about "ppp problem with 2.2.X kernel;
ok with 2.0.36"
> >
> >
> > I had a slink system with 2.0.36 kernel, and wanted to update to 2.2.X
kernel. I
> > updated the suggested packages listed on the debian page that discussed
known
> > issues, and then updated the kernel. No problems with that. Netscape seemed
to
> > work ok, but when I tried to download any packages, it would only download a
> > small amount of data and stall. I thought it might be a problem with packets
not
> > clearing.
> >
> > So, since that page said all these problems were cleared up in unstable, I
> > upgraded to potato with "apt-get dist-upgrade". Same problem. But, if I use
the
> > 2.0.36 kernel, downloads are fine.
> >
> > I recompiled the 2.2.X kernel to make sure I have ppp support, and couldn't
see
> > anything else that might cause this in the kernel config menu. I'm doing
> > something wrong, but what? Ideas / suggestions?
> >
>
> I had similiar problems as well. Check the debian-user list archives
> for other discussions on this topic. If I recall correctly the thing
> that helped me was to simply play around with the mru and mtu options
> for pppd. Currently I have each set at 552. I think the defaults are
> 1500. Unfortunately I can't seem to recall where I got my info on
> settings for the mru/mtu values.
>
ppp needs to be upgraded.... pppconfig as well, I think.
the ppp/isdn part of the kernel has been reorganized, hence the need for
the new versions.
Robert Varga
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