From owner-freebsd-net@FreeBSD.ORG Thu Feb 9 16:03:16 2006 Return-Path: X-Original-To: freebsd-net@freebsd.org 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 DC1E616A420; Thu, 9 Feb 2006 16:03:16 +0000 (GMT) (envelope-from awebster@connectalk.com) Received: from esafe.connectalk.com (esafe.connectalk.com [204.19.165.17]) by mx1.FreeBSD.org (Postfix) with SMTP id 1332643D53; Thu, 9 Feb 2006 16:03:15 +0000 (GMT) (envelope-from awebster@connectalk.com) Received: from connectalk.com ([10.125.204.14]) by eSafe SMTP Relay 1139494893; Thu Feb 9 10:59:24 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-MimeOLE: Produced By Microsoft Exchange V6.5 Date: Thu, 9 Feb 2006 11:03:11 -0500 Message-ID: <9D61D69E3C1F7F459C5513AD830EE2192BC2AA@mtlex01.connectalk.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Multiple routes to same destination Thread-Index: AcYs9iqbWGP4g1v5TrqiF8LiGR8OIAAmyYgQ From: "Webster, Andrew" To: "Julian Elischer" ,"Qing Li" X-ESAFE-STATUS: Mail clean X-ESAFE-DETAILS: Clean Cc: freebsd-net@freebsd.org, freebsd-questions@freebsd.org Subject: RE: Multiple routes to same destination X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 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, 09 Feb 2006 16:03:17 -0000 >=20 > Qing Li wrote: >=20 > I use mpd to greate one VPN between the sites, using Multilink PPP, so > that > data is sent across both links (eitehr round-robon or split packet). > I use MPD's udp transport mode to open two UDP sockets > and send packets from R1 to R4 and from R2 to R3 (in the diagram below). > MPD will automatically detect if on e link is down and redirect > everything through the remaining link. Sounds like a good idea, but would that not cause the MTU to get smaller due to the overhead of a MPPP link? =20 Windoze hosts have a horrible time with MTU detection! >=20 > > I have a private patch that's based on radix_mpath for FreeBSD 5.4. > > I believe andre@freebsd.org is working on a solution. > > > > -- Qing > > > > > >-----Original Message----- > >From: owner-freebsd-questions@freebsd.org [mailto:owner-freebsd- > questions@freebsd.org] On Behalf Of Webster, Andrew > >Sent: Wednesday, February 08, 2006 10:51 AM > >To: danial_thom@yahoo.com; Ian Lord; freebsd-questions@freebsd.org > >Subject: RE: Multiple routes to same destination? > > > >Well, in that case, an ISP wouldn't want to use FreeBSD in their core > routers :( :( > > > >In this particular case, I have redundant links (L1 and L2) between two > locations > >(Loc 1 and Loc 2) with two FreeBSD routers at each location (R1/R2, and > R3/R4) > >which are running OSPF to redistribute routing information between > locations. > >Since FreeBSD limits the entries for a particular network to only one > active entry, > >the all the traffic for would either go on R1->L1->R4 or R2->L2->R3, but > not both. > > > >Loc 1___ /---R1--L1--R4---\___ Loc 2 > > \---R2--L2--R3---/ > > > > > >Andrew > > > >_______________________________________________ > >freebsd-net@freebsd.org mailing list > >http://lists.freebsd.org/mailman/listinfo/freebsd-net > >To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > > > > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions- > unsubscribe@freebsd.org"