Well, Freesco floppy-based router can use 3 nics and bridge the network.  I
don't know about balancing the load though.  There might be a script avail.
or you might be able to use squid or something to load balance.

www.freesco.org

> -----Original Message-----
> From: Jeremy Fowler [mailto:jfowler@westrope.com]
> Sent: Thursday, May 10, 2001 2:09 PM
> To: Kclug
> Subject: Linux as a router/gateway
> 
> 
> How hard would it be to setup a Linux box to route Internet 
> traffic to two
> separate DSL routers? Here's the setup, small office with 2x 256Kb DSL
> routers/connections. This office was too far away from the CO 
> for anything
> faster and the ISP's DSLAMs didn't support bonding of the two 
> DSL lines. So, now
> they have two connections to the Internet and they split the 
> traffic in half by
> assigning specific IP address ranges to the different routers 
> with DHCP. This
> isn't very efficient if one side were to utilize bandwidth 
> more than the other
> side. I had an idea of setting up a Linux box to route 
> traffic to the two DSL
> routers directly and then set this Linux box as the default 
> gateway for the
> network. This box would have three NICs one to each router 
> and then a third to
> the LAN. How would one go about setting this up so that the 
> Linux box would
> utilize both DSL connections evenly and efficiently? Is there 
> a way to do this?
> Any help is appreciated.
> 
> Thanks,
> Jeremy Fowler
> 
> 
> 
> majordomo@kclug.org
>