Date: Mon, 7 Jun 2004 09:15:31 +1000 From: "David J. Hughes" <bambi@Hughes.com.au> To: "'Rene de Vries'" <rene@canyon.xs4all.nl>, "'Mitch (bitblock)'" <mitch@bitblock.com> Cc: 'Joe Hamelin' <joe@nethead.com> Subject: RE: 2 adsl connections load balancing with natd/ipfw Message-ID: <20040606231544.C9FAB43D39@mx1.FreeBSD.org> In-Reply-To: <8EBC1C3A-B7E1-11D8-BD82-00039357FA7A@canyon.xs4all.nl>
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I was talking about load balancing inbound traffic not outbound. Like I said there's a stack you can do on the local box that I have no experience with. In my world FreeBSD =3D=3D Server not Router. David ...=20 > -----Original Message----- > From: Rene de Vries [mailto:rene@canyon.xs4all.nl]=20 > Sent: Monday, 7 June 2004 3:47 AM > To: Mitch (bitblock) > Cc: 'Joe Hamelin'; freebsd-isp@freebsd.org; David J. Hughes > Subject: Re: 2 adsl connections load balancing with natd/ipfw >=20 > Mitch, >=20 > Why so complicated. >=20 > Simply start two different natd instances one for each ADSL=20 > line. Make=20 > one of the ADSL lines the default route. Then based on the source=20 > address (just modified by natd) fast-route traffic which=20 > tries to leave=20 > via the default route over the wrong interface to the other=20 > interface's=20 > next hop (using ipfw). >=20 > You could apply various methods of determining over which=20 > ADSL line the=20 > traffic will leave, e.g. source port, source address, dest address=20 > etc... >=20 > This solution doesn't require provider assistance and would even work=20 > when you have two different providers. >=20 > Ren=E9 >=20 > On May 26, 2004, at 2:59, Mitch (bitblock) wrote: >=20 > > Hey David - didn't see your reply before I replied to Joe=20 > there - any=20 > > more > > info appreciated - I have both ends of the solution (I=20 > think) - just=20 > > need to > > know the best way to config! > > > > Consider these ip's and interfaces... what do I do? Is ISPF lighter=20 > > weight > > than BGP (considering the limited deployment?) > > > > Client A <-----\ > > X.X.X.2 \ > > ----------> Router <-------------> > > / / X.X.X.1 X.X.Y.2 > > X.X.X.3 / / > > Client B <-----/ / > > <------/ > > X.X.X.4 > > > > Router is FreeBSD based, and Client A and Client B are also FreeBSD=20 > > based, > > and have a second interface to the internal networks at=20 > Client A and=20 > > Client > > B. > > > > I'm wondering if my other problem (the fact that Client A can't see=20 > > Client B > > as there is an ATM path for it to Router, but as Client B's=20 > addresses=20 > > are on > > the same subnet, and not bounced off the Router (and there is no=20 > > direct ATM > > path) there is no connection... > > > > Any help or advice greatly appreciated. > > > > Thanks. > > > > m/ > > > >> -----Original Message----- > >> From: owner-freebsd-isp@freebsd.org > >> [mailto:owner-freebsd-isp@freebsd.org]On Behalf Of David J. Hughes > >> Sent: Tuesday, May 25, 2004 4:08 PM > >> To: 'Joe Hamelin'; freebsd-isp@freebsd.org > >> Subject: RE: 2 adsl connections load balancing with natd/ipfw > >> > >> > >> > >> Actually, that isn't quite correct. You do not need a virtual IP > >> address (such as an HSRP or VRRP setup). You just need equal cost > >> paths from the ISP to you. > >> > >> To achieve this you will need to route an address range from your > >> ISP to your network. It can be your address space, a small piece > >> of ISP provided space, or even a chunk of private space. Just as > >> long as it's routed from the ISP to you via the DSL tails. The > >> ISP just needs to see equal cost paths to your prefix via BOTH > >> your DSL tails. That way they will use both. > >> > >> There are several ways to do this (inc running eBGP or OSPF to them > >> from your equipment). Have a chat with your ISP to see=20 > what options > >> they would consider. > >> > >> > >> David > > > > _______________________________________________ > > freebsd-isp@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-isp > > To unsubscribe, send any mail to=20 > "freebsd-isp-unsubscribe@freebsd.org" > > > --=20 > Ren=E9 de Vries <rene@tunix.nl> > Tunix Internet Security & Training >=20 >=20 >=20
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