Date: Sat, 17 Mar 2001 10:54:55 -0800 From: Julian Elischer <julian@elischer.org> To: Alex Pilosov <alex@acecape.com> Cc: Nick Rogness <nick@rogness.net>, freebsd-net@FreeBSD.ORG, Jeroen Ruigrok/Asmodai <asmodai@wxs.nl> Subject: Re: same interface Route Cache Message-ID: <3AB3B2FF.3A04B53C@elischer.org> References: <Pine.BSO.4.10.10103171317130.8329-100000@spider.pilosoft.com>
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Alex Pilosov wrote: > You don't need to know the interface. You must route based on the source > IP. I.E: > > ISP A ISP B > \ / > ra rb > \ / > your router > | > | > | > (local) > > (ra and rb are respectively edge routers on ISP A and B's end connected to > you). > > Note: On local network, you'll be essentially having two logical > networks (different IPs, subnet, etc) on the same wire. Its not clean, but > its perfectly supported. > > Now, assume you have IPs 11.1.1.* from ISP B, and 11.1.2.* from ISP B. You > configure both IPs to machines on your 'local' network, and have something > like this on the router: > ipfw from 11.1.1.0 fwd ra > ipfw from 11.1.2.0 fwd rb this will do what you want for OUTGOING packets. incoming packets will probably all come in on one network. BTW you could do a more general rule by: ipfw add 3 from any to 0.0.1.0:0.0.1.0 fwd ra out xmt ed0 ipfw add 4 from any to any fwb rb out xmt ed0 (if ed0 was the default) > > If this is not what you wanted to accomplish, please correct me. > > -- > -- > Alex Pilosov | http://www.acecape.com/dsl > CTO - Acecape, Inc. | AceDSL:The best ADSL in Bell Atlantic area > 325 W 38 St. Suite 1005 | (Stealth Marketing Works! :) > New York, NY 10018 | > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message -- __--_|\ Julian Elischer / \ julian@elischer.org ( OZ ) World tour 2000-2001 ---> X_.---._/ v To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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