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Date:      Mon, 4 Nov 2002 23:21:46 -0800 (PST)
From:      Julian Elischer <julian@elischer.org>
To:        "Dmitry A. Bondareff" <freebsd@mmk.ru>
Cc:        Archie Cobbs <archie@dellroad.org>, Johan Larsson <johan.larsson@operax.com>, "freebsd-net@FreeBSD.org" <freebsd-net@FreeBSD.ORG>
Subject:   Re: Win XP with mpd
Message-ID:  <Pine.BSF.4.21.0211042320240.60008-100000@InterJet.elischer.org>
In-Reply-To: <00de01c28489$20ebb760$02010101@wall>

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On Tue, 5 Nov 2002, Dmitry A. Bondareff wrote:

> I'll trying to setup mtu to 1400, why I don't see it by ifconfig command ?
> 
> From mpd.conf:
> ....
>         set link mru 1400
>         set link mtu 1400


the link commands affect the links..
this sets teh fragment size that Mulitlink ppp will use..
externally you only see teh interface mtu, which is
a different thing..
try:

	set iface mtu 1400


> ....
> 
> #mpd -b
> 
> #ifconfig -a:
> ng0: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500
> ng1: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500
> ng2: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500
> ng3: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500
> ng4: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500
> 
> After connecting:
> #ifconfig -a:
> ng0: flags=88d1<UP,POINTOPOINT,RUNNING,NOARP,SIMPLEX,MULTICAST> mtu 1500
>         inet 1.1.1.1 --> 10.0.2.1 netmask 0xffffffff
> ng1: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500
> ng2: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500
> ng3: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500
> ng4: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500
> 
> After disconnected:
> #ifconfig -a:
> ng0: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1496
> ng1: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500
> ng2: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500
> ng3: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500
> ng4: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500
> 
> 
> 
> ----- Original Message -----
> From: "Archie Cobbs" <archie@dellroad.org>
> To: "Johan Larsson" <johan.larsson@operax.com>
> Cc: "Archie Cobbs" <archie@dellroad.org>; "Dmitry A. Bondareff"
> <freebsd@mmk.ru>; "freebsd-net@FreeBSD.org" <freebsd-net@FreeBSD.ORG>
> Sent: Tuesday, November 05, 2002 12:04 AM
> Subject: Re: Win XP with mpd
> 
> 
> > Johan Larsson writes:
> > > > > For a long time many peoples discussed why Win XP don't work with
> mpd.
> > > > > May be you can help us ??
> > > > > Where I can find working configs ??
> > > >
> > > > I've heard of some MTU problems, some of which mpd-3.10 should
> address.
> > >
> > > It might be MTU problems. But the problem occurs for example when i ping
> > > the server from the windows xp machine, some pings get lost, some times
> > > you must issue the ping command a few times, or run it with -t for a
> while
> > > to see them get lost. mpd-3.10 does not solve this problem
> unfortunately.
> >
> > Try playing with the "set link mtu" and/or "set iface mtu" commands
> > to manually set the MTU values.
> >
> > > I might be able to fix some dumps (from ethereal) under windows xp if
> you
> > > want it. And of course, these pings getting lost is just an easy way of
> > > seeing the problem, you also get poor performance obviously.
> >
> > If you can tell where the packets are being dropped, that would be useful
> > to know.
> >
> > -Archie
> >
> > __________________________________________________________________________
> > Archie Cobbs     *     Packet Design     *     http://www.packetdesign.com
> >
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe freebsd-net" in the body of the message
> >
> 
> 
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