From owner-freebsd-isp Wed Aug 18 11: 8:23 1999 Delivered-To: freebsd-isp@freebsd.org Received: from storm.FreeBSD.org.uk (storm.freebsd.org.uk [194.242.128.198]) by hub.freebsd.org (Postfix) with ESMTP id 8BD0D151E5 for ; Wed, 18 Aug 1999 11:08:15 -0700 (PDT) (envelope-from brian@Awfulhak.org) Received: from keep.lan.Awfulhak.org (root@localhost [127.0.0.1]) by storm.FreeBSD.org.uk (8.9.3/8.9.3) with ESMTP id TAA89578; Wed, 18 Aug 1999 19:07:49 +0100 (BST) (envelope-from brian@Awfulhak.org) Received: from keep.lan.Awfulhak.org (brian@localhost.lan.Awfulhak.org [127.0.0.1]) by keep.lan.Awfulhak.org (8.9.3/8.9.3) with ESMTP id TAA05472; Wed, 18 Aug 1999 19:10:29 +0100 (BST) (envelope-from brian@keep.lan.Awfulhak.org) Message-Id: <199908181810.TAA05472@keep.lan.Awfulhak.org> X-Mailer: exmh version 2.0.2 2/24/98 To: Rowan Crowe Cc: freebsd-isp@FreeBSD.ORG Subject: Re: Minor prob with user level ppp - multilink In-reply-to: Your message of "Thu, 19 Aug 1999 02:54:25 +1000." Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Wed, 18 Aug 1999 19:10:29 +0100 From: Brian Somers Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > > Hi all, > > Still having a slight problem with multilink under userland PPP... if one > of the modems goes down momentarily, no packets get through (even though > the other modem is still up). Is this normal? I would have thought that a > link dropping should be no sweat, just revert to the remaining links... If the link is closed cleanly, there should be no interrupt in the data stream. If a link is lost, the data queued for that link (at most one packet in user-ppp) will be dropped as soon as ppp realises that the link is dead. With correct carrier, this is immediate, but the gap in the data stream will cause difficulties if 1. The peer doesn't realise that the link is down (carrier detection problems). It ends up waiting for the missing data. 2. You're using compression. Here, both sides have to resync their dictionaries. This can take some time. Apart from that, the missing data is just ``missing data'' and the above layers will deal with it as they see fit. If you're using user-ppp on both ends, create a diagnostic socket and use ``show mp'' to see when ppp is waiting for unreceived information. > Cheers. > > > -- > Rowan Crowe http://www.rowan.sensation.net.au/ > Sensation Internet Services http://www.sensation.net.au/ > Melbourne, Australia Phone: +61-3-9388-9260 -- Brian Don't _EVER_ lose your sense of humour ! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message