From owner-freebsd-net@FreeBSD.ORG Tue Apr 27 20:20:17 2004 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 D550416A4CE for ; Tue, 27 Apr 2004 20:20:17 -0700 (PDT) Received: from relay.pair.com (relay.pair.com [209.68.1.20]) by mx1.FreeBSD.org (Postfix) with SMTP id 40F6843D4C for ; Tue, 27 Apr 2004 20:20:17 -0700 (PDT) (envelope-from freebsd@stevenfettig.com) Received: (qmail 53940 invoked from network); 28 Apr 2004 03:20:16 -0000 Received: from 66-168-50-57.jvl.wi.charter.com (HELO stevenfettig.com) (66.168.50.57) by relay.pair.com with SMTP; 28 Apr 2004 03:20:16 -0000 X-pair-Authenticated: 66.168.50.57 Message-ID: <408F22DF.9090102@stevenfettig.com> Date: Tue, 27 Apr 2004 22:19:59 -0500 From: "Steven N. Fettig" User-Agent: Mozilla Thunderbird 0.5 (X11/20040208) X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-questions@freebsd.org, freebsd-net@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Load Balanced Dual T1's - Same default gateway for both CSU/DSU's? 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: Wed, 28 Apr 2004 03:20:18 -0000 I know this is possible using a Cisco router with two or dual CSU/DSU's for data T1's, but I am struggling to figure out how to get this to work with FreeBSD: I have a Sangoma Dual T1 (CSU/DSU) card in a FreeBSD box I want to use as the router and firewall for. Global Crossing has provided me with two T1's that they are "load balancing" on their end (they will not employ multilink ppp) - traffic will be distributed "evenly" across both T1's - one is not a main vs. backup - they are both mains and if one goes down, both go down. I need to somehow tell the gateway/router to use two different pipes as the default gateway. I.e. the far side of the wan is 123.1.1.161 for T1-1 and 123.1.2.166 for T1-2. I can only add a default route for one and not set it to both. Is there a way to either use ipfw or simple routing to make this work? otherwise, I guess Cisco is it... Thanks in advance, Steve