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Subject: Re: MTU
From: Damion Wilson <dwilson,AT,ibl,DOT,bm>
Date: Mon, 31 Mar 2003 16:36:47 +0200
In-reply-to: <1049100902.8047.11.camel@away>

Would it help if there was a per adapter MTU option in the settings ?

DKW

On Monday 31 March 2003 08:19 am, Phil wrote:
> On Mon, 2003-03-31 at 13:06, Mark Cooke wrote:
> > Hi Phil,
> >
> > I had an issue with MTU, and I manually changed the CIPE-Win32 MTU to
> > 1442 by changing the registry, on the windows end of a linux-win32 cipe
> > link.[*]
> >
> > This cured a problem I was having where small packets, like imap checks
> > for new mail, would make it over the encrypted link, but bulk transfers
> > such as actually grabbing the new messages, would fail.
> >
> > This was on XP.
> >
> > Note, I also set the service to manual, because even with the latest
> > dependancy registry mods, on (my install of) XP, the machine still
> > pauses for ~ 2 minutes during startup, logging DWK failed to start, and
> > then a terminated unexpectedly, before finally starting up.  I just
> > added a key to the 'Run' part of the registry, so the service is started
> > on login.[#]  It means I have to login before the CIPE link comes up,
> > but that isn't too big a deal in my situation.
> >
> > With both the above, CIPE runs very well over my 802.11b link, so I was
> > able to switch off WEP (which isn't secure anyway).  I should just note
> > I've had a couple of blue screens since installing CIPE.
> >
> > YMMV,
> >
> > Mark
> >
> > [*]  I added an MTU dword key to the right interface in
> > HKLM\System\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{}
> >
> > [#] HKLM\Software\Microsoft\Windows\CurrentVersion\Run, added a string,
> > "C:\windows\system32\cipsrvr.exe" -start
> >
> > On Mon, 2003-03-31 at 09:55, Phil wrote:
> > > hi,
> > >
> > > I'd like to konwo if it is ok that my cipcb0's MTU is 1442 ? if I use a
> > > windows 2000 client and a cipe linux server, can I have a problem with
> > > MTU?
> > >
> > > Best regards,
> > >
> > > Phil
> > >
> > >
> > >
> > >
> > > --
> > > Message sent by the cipe-l,AT,inka,DOT,de mailing list.
> > > Unsubscribe: mail majordomo,AT,inka,DOT,de, "unsubscribe cipe-l" in body
> > > Other commands available with "help" in body to the same address.
> > > CIPE info and list archive:
> > > <URL:http://sites.inka.de/~bigred/devel/cipe.html>
> >
> > --
> > Mark Cooke <mpc,AT,star,DOT,sr,DOT,bham,DOT,ac,DOT,uk>
> >
> >
> > --
> > Message sent by the cipe-l,AT,inka,DOT,de mailing list.
> > Unsubscribe: mail majordomo,AT,inka,DOT,de, "unsubscribe cipe-l" in body
> > Other commands available with "help" in body to the same address.
> > CIPE info and list archive:
> > <URL:http://sites.inka.de/~bigred/devel/cipe.html>
>
> thx for your answer Mark. My VPN is ok with 2 Linux (yeaaahhhh! Linux's
> POWER) but It doesn't work with Linux <-> windows 200 Cipe-Win32. I'll
> try to modify Windows's MTU.
> thx for your help.





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