Date: Sat, 23 Feb 2002 13:39:20 +1000 From: Greg Black <gjb@gbch.net> To: net@freebsd.org Subject: ppp -nat fails with adsl, but ok with modem Message-ID: <nospam-1014435560.48368@bambi.gbch.net>
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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 <http://www.freebsd.org/gnome/newsflash.html>; 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
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