From owner-freebsd-hackers Thu Dec 6 15:57:49 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from boreas.isi.edu (boreas.isi.edu [128.9.160.161]) by hub.freebsd.org (Postfix) with ESMTP id 8CC7B37B416 for ; Thu, 6 Dec 2001 15:57:46 -0800 (PST) Received: from isi.edu (q2ym27h0bbm4m61c@hbo.isi.edu [128.9.160.75]) by boreas.isi.edu (8.11.6/8.11.2) with ESMTP id fB6NvYN26325; Thu, 6 Dec 2001 15:57:34 -0800 (PST) Message-ID: <3C1005ED.4090001@isi.edu> Date: Thu, 06 Dec 2001 15:57:33 -0800 From: Lars Eggert User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:0.9.6) Gecko/20011203 X-Accept-Language: en, de MIME-Version: 1.0 To: "S. Aeschbacher" Cc: Mike D , hackers@freebsd.org Subject: Re: cable modem connection problem References: <20011206071926.QTHW27606.mta05-svc.ntlworld.com@there> <20011205233229.R3061@blossom.cjclark.org> <20011206080612.KYRB10846.mta07-svc.ntlworld.com@there> <3C0F7966.908CD6E6@bturtle.ch> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG S. Aeschbacher wrote: > A solution I found is deleting the arp table entry of the default > router of the cable modem provider (as a cron job). I did not > investigate the source of the problem. Anyone got any clues? This sounds a lot like your cable modem provider throtteling the link if it doesn't see some sort of negotiation (DHCP, ARP, etc.) after a fixed amount of time. I could imagine that some companies do this for residential connections. Does your cable modem provide IP service, or do you need PPPoE or something like that? > Mike D wrote: >> I have a set up where my FreeBSD 4.4 box is acting as a firewall >> and gateway between a cable modem on xl1 and my home net on xl0. ... >> It seems that after approx 10 hours the connection REALLY slows >> down, most connection attempts on other ports (e.g. 110) time out >> and I have to reboot the box. After the reboot everything is >> back to normal. Is this going out from behind the box, or coming in from the Internet? Also, do you see packet drops or RTT increases (define "slow"). Lars -- Lars Eggert Information Sciences Institute http://www.isi.edu/larse/ University of Southern California To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message