Date: Thu, 28 Oct 1999 08:02:57 +0100 From: Brian Somers <brian@Awfulhak.org> To: Adrian Penisoara <ady@warpnet.ro> Cc: Brian Somers <brian@Awfulhak.org>, freebsd-stable@FreeBSD.org, brian@hak.lan.Awfulhak.org, brian@hak.lan.Awfulhak.org Subject: Re: MP downliks problem (was Re: PPP dying with signal 10) Message-ID: <199910280702.IAA00836@hak.lan.Awfulhak.org> In-Reply-To: Message from Adrian Penisoara <ady@warpnet.ro> of "Tue, 26 Oct 1999 20:51:39 %2B0300." <Pine.BSF.4.10.9910262048290.12818-100000@ady.warpnet.ro>
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> Hi,
>
> On Mon, 25 Oct 1999, Brian Somers wrote:
>
> > > Hi,
> > >
> > > On Mon, 25 Oct 1999, Brian Somers wrote:
> > >
> > > > This should now be fixed too :-) It's amazing how much testing
> > > > things don't get 'till just after I put them in -stable and a release
> > > > happens :-/
> > > >
> > >
> > > One more problem discovered in Multilink mode: if both links fall down
> > > simultaneusly then, after reconnect, one of the end (usually the oposite
> > > end) gets confused and no replies get sent over the wire. A "down" in the
> > > control prompt gets the situation back to normal (probably because a
> > > renegociation is implied) -- could you please investigate this ?
> > >
> > > Thanks, I'll try the newest version as soon as possible,
> > > Ady (@warpnet.ro)
> >
> > Can you send me some relevant logs ?
>
> Can't find any interesting things in the logs, but the situation is
> easily reproductible, see above. Any hints what log levels I should be
> watching ?
>
> One thing is sure: forcing a renegociation through "down" (including a
> "reset" at the mp level) gets things back to normal.
I think I'm misunderstanding at least some of the problem. I'm
assuming the following: You have a two-link ppp session with ppp(8)
running in -direct mode. You then reset both modems and ppp exits.
The client dials again (twice) and has problems establishing the
connection because no ``replies'' are sent by one side or the other.
What sort of replies are we talking about here ? If they're LCP or
IPCP replies, I need a log with something like
set log command lcp ipcp phase
If they're missing ``replies'' from the application level, then
set log command lcp ipcp phase tcp/ip
would be more in order.
ady@warpnet.ro said:
> Oh, and another thing: the client accuses that every few hours the
> traffics starts to slow down up to the point where he needs to restart
> the PPP process -- this I can't very well trace but it may be related
> to what I told you...
This sounds like a modem that likes to renegotiate the link speed
when the line gets bad but never renegotiates up. I would suggest
doing some tests with the pings' round trip times.
> > Cheers.
> >
>
> Thanks,
--
Brian <brian@Awfulhak.org> <brian@FreeBSD.org>
<http://www.Awfulhak.org>; <brian@OpenBSD.org>
Don't _EVER_ lose your sense of humour ! <brian@FreeBSD.org.uk>
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