From owner-freebsd-net Sun Feb 24 12:27: 0 2002 Delivered-To: freebsd-net@freebsd.org Received: from tomts11-srv.bellnexxia.net (tomts11.bellnexxia.net [209.226.175.55]) by hub.freebsd.org (Postfix) with ESMTP id B68DC37B404 for ; Sun, 24 Feb 2002 12:26:53 -0800 (PST) Received: from xena.gsicomp.on.ca ([199.243.128.121]) by tomts11-srv.bellnexxia.net (InterMail vM.4.01.03.23 201-229-121-123-20010418) with ESMTP id <20020224202652.QSHT27257.tomts11-srv.bellnexxia.net@xena.gsicomp.on.ca>; Sun, 24 Feb 2002 15:26:52 -0500 Received: from hermes (hermes.gsicomp.on.ca [192.168.0.18]) by xena.gsicomp.on.ca (8.11.1/8.11.1) with SMTP id g1OKFIi33927; Sun, 24 Feb 2002 15:15:23 -0500 (EST) (envelope-from matt@gsicomp.on.ca) Message-ID: <00ad01c1bd71$98237820$1200a8c0@gsicomp.on.ca> From: "Matthew Emmerton" To: "Greg Black" Cc: References: Subject: Re: ppp -nat fails with adsl, but ok with modem Date: Sun, 24 Feb 2002 15:26:46 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4807.1700 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4807.1700 Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org What version of FreeBSD are you using? The ppp included in early 4.x distributions doesn't have the TCP MSS fixup code that is required to make things work properly with a PPPoE connection, and cause the kinds of symptoms that you describe. Matt ----- Original Message ----- From: "Greg Black" To: Sent: Friday, February 22, 2002 10:39 PM Subject: ppp -nat fails with adsl, but ok with modem > I've had ppp -nat working just fine over a normal modem link, > but it is not working at all well on my ADSL link to the same > provider. > > To quantify "not working at all well", although I can ping and > traceroute ok from the hosts on my LAN, HTTP and FTP traffic is > so slow and bursty as to be useless. Clicking on a link with > Netscape will see short bursts of data with long periods (of a > minute or more) where it says "stalled". > > Clicking on from > my gateway host gets the page in an eye-blink, but on the NAT > hosts, it will take 40 seconds to load the top banner and the > "FreeBSD GNOME News Flash" heading, then another delay of 40 or > so seconds before the rest of the page will be displayed. Even > then, Netscape thinks it has stalled and keeps waiting for the > last bit of data. > > With FTP, a small transfer (e.g., a directory listing of / on > ftp.freebsd.org) will complete normally; but something slightly > larger (e.g., a listing of /pub/FreeBSD on the same server), > will produce: > > ftp> cd /pub/FreeBSD > 250 CWD command successful. > ftp> dir > 200 PORT command successful. > 150 Opening ASCII mode data connection for '/bin/ls'. > ftp: netin: Connection reset by peer > 226 Transfer complete. > ftp> quit > 421 Timeout (60 seconds): closing control connection. > > If I do the same things from the host that is connected to the > modem(s), everything works fine, for both types of connections. > > I'm finding this very frustrating, and I'm wondering if there's > something weird about PPPoE with the ADSL link that needs some > special magic in order for things to work properly. > > If anybody can point me at the truth, I'd be most grateful. > > Alternatively, if anybody can suggest steps I could take to > identify the nature of the problem, that would also be most > welcome. > > Greg Black > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message