Date: Wed, 26 May 2004 11:36:55 +1000 From: "David J. Hughes" <bambi@Hughes.com.au> To: "'Mitch (bitblock)'" <mitch@bitblock.com>, "'Joe Hamelin'" <joe@nethead.com>, <freebsd-isp@freebsd.org> Subject: RE: 2 adsl connections load balancing with natd/ipfw Message-ID: <200405260137.i4Q1b180041781@elk.hughes.com.au> In-Reply-To: <GMEEINAOJAINFLGLEJNFKEHJCIAA.mitch@bitblock.com>
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Hey, Lets say client B owns the 10.1.1.0/24 prefix then you basically need the router to know that there are 2 equal cost paths to 10.1.1.0/24 : one via X.X.X.2 and one via X.X.X.3. I've never used FreeBSD as a router (cisco routers, freebsd servers) so I can't comment on how it handles forwarding decisions. But, seeing as you own both ends, you may be able to do something as simple as using a pair of static routes on the router to do this without having to worry about a routing protocol at all. Anyone got comments on FreeBSD using multiple static routes with the same wight to the same destination? David ... > -----Original Message----- > From: owner-freebsd-isp@freebsd.org > [mailto:owner-freebsd-isp@freebsd.org] On Behalf Of Mitch (bitblock) > Sent: Wednesday, 26 May 2004 11:00 AM > To: David J. Hughes; 'Joe Hamelin'; freebsd-isp@freebsd.org > Subject: RE: 2 adsl connections load balancing with natd/ipfw > > Hey David - didn't see your reply before I replied to Joe > there - any more > info appreciated - I have both ends of the solution (I think) > - just need to > know the best way to config! > > Consider these ip's and interfaces... what do I do? Is ISPF > lighter 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 based, > and have a second interface to the internal networks at > Client A and Client > B. > > I'm wondering if my other problem (the fact that Client A > can't see Client B > as there is an ATM path for it to Router, but as Client B's > addresses are on > the same subnet, and not bounced off the Router (and there is > no 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 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 "freebsd-isp-unsubscribe@freebsd.org" > >
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