From owner-freebsd-stable Tue Jul 16 11:53:30 2002 Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 22F0A37B400 for ; Tue, 16 Jul 2002 11:53:28 -0700 (PDT) Received: from mail.deltanet.com (mail.deltanet.com [216.237.144.132]) by mx1.FreeBSD.org (Postfix) with ESMTP id 97D5D43E64 for ; Tue, 16 Jul 2002 11:53:26 -0700 (PDT) (envelope-from pherman@frenchfries.net) Received: from mammoth.eat.frenchfries.net (da001d0577.lax-ca.osd.concentric.net [64.0.146.66]) by mail.deltanet.com (8.11.6/8.11.6) with ESMTP id g6GIQpO24191 for ; Tue, 16 Jul 2002 11:26:56 -0700 Received: by mammoth.eat.frenchfries.net (Postfix, from userid 1000) id 4B2AB4EBD; Tue, 16 Jul 2002 09:40:25 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by mammoth.eat.frenchfries.net (Postfix) with ESMTP id 483EB49C5; Tue, 16 Jul 2002 09:40:25 -0700 (PDT) Date: Tue, 16 Jul 2002 09:40:25 -0700 (PDT) From: Paul Herman X-X-Sender: pherman@mammoth.eat.frenchfries.net To: Hellmuth Michaelis Cc: FreeBSD-Stable List Subject: Re: "Hanging" TCP connections over ISDN In-Reply-To: <20020716133233.13299566@hcswork.hcs.de> Message-ID: <20020716092551.I99681-100000@mammoth.eat.frenchfries.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Tue, 16 Jul 2002, Hellmuth Michaelis wrote: > since upgrading two ISDN-connected systems from 4.5 RC1 to 4.6 TCP > connections between this two systems "hang" from time to time. > > [...] > > I'm a bit stuck here. It still might be a bug in the ISDN subsystem, > but nothing important has changed between 4.5 and 4.6. Unfortunately, I don't have much of an idea where the problem might be, but I can say "Me Too." The two machines connected over the internet are 4.6-STABLE and 4.5-RELEASE with a 56k link and 1.5 Mbit cable modem respectively. I've got newreno off on both, turning off delayed ACKs doesn't seem to help either. Also, the 56k modem is attached to a G4 iMac running Darwin 5.4 doing ipfw/natd which itself doesn't seem to stall nearly as much, so the link itself is probably OK. I guess I'll start looking at tcpdumps. -Paul. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message