From owner-freebsd-net@FreeBSD.ORG Thu May 15 14:38:14 2003 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id ABCBA37B40A for ; Thu, 15 May 2003 14:38:14 -0700 (PDT) Received: from pit.databus.com (p70-227.acedsl.com [66.114.70.227]) by mx1.FreeBSD.org (Postfix) with ESMTP id 59E8E43F3F for ; Thu, 15 May 2003 14:38:13 -0700 (PDT) (envelope-from barney@pit.databus.com) Received: from pit.databus.com (localhost [127.0.0.1]) by pit.databus.com (8.12.9/8.12.9) with ESMTP id h4FLcCiK009119; Thu, 15 May 2003 17:38:12 -0400 (EDT) (envelope-from barney@pit.databus.com) Received: (from barney@localhost) by pit.databus.com (8.12.9/8.12.9/Submit) id h4FLcCow009118; Thu, 15 May 2003 17:38:12 -0400 (EDT) Date: Thu, 15 May 2003 17:38:12 -0400 From: Barney Wolff To: "Justin C. Sherrill" Message-ID: <20030515213812.GA8905@pit.databus.com> References: <49537.24.93.1.61.1053029897.squirrel@home.shiningsilence.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <49537.24.93.1.61.1053029897.squirrel@home.shiningsilence.com> User-Agent: Mutt/1.4.1i X-Scanned-By: MIMEDefang 2.32 (www . roaringpenguin . com / mimedefang) cc: freebsd-net@freebsd.org Subject: Re: load balance ordinary traffic X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 May 2003 21:38:15 -0000 On Thu, May 15, 2003 at 04:18:17PM -0400, Justin C. Sherrill wrote: > I have a FreeBSD 4.8-stable machine with multiple network interfaces. One > goes to a local network (192.168.*) and the other goes to the Internet via > cable modem. This machine does NAT for the 192.168.* network. > > I'd like to add more Ethernet cards to this computer and connect them to > other cable modems, thereby providing more bandwidth to the 192.168.* > network. Where can I look for more information on how to do this? > Specifically, the software changes (with ipfw?) to "concatenate" the > connection. This is unlikely to work with cable modems. You're already competing with your immendiate neighbors for a fixed pie of cable bandwidth. You have a better shot with DSL, if you pay for multiple DSL lines. In that case, you can set it up so some of your local hosts go to each DSL link, by ipfw and natd rules. However, what you can't do is have a single TCP connection on a single local host use both external lines. That would require at a minimum cooperation from your ISP which they are most unlikely to provide. -- Barney Wolff http://www.databus.com/bwresume.pdf I'm available by contract or FT, in the NYC metro area or via the 'Net.