D> I have three ADSL lines that I'd like to use as one big pipe to the D> internet. The ADSL service works by establishing a pppoe connection (the D> ADSL "modem" is a bridge), and each pppoe interface gets its own IP D> address. D> This means I'd have to have 4 ethernet interfaces (3 for each D> of the ADSL modems and 1 for the LAN) in my gateway. I'd setup the D> gateway to NAT the LAN computers. It's only possible to "bond" the interfaces correctly (meaning that eg. one ftp download could reach almost the sum speed of all ADSL interfaces) if you have an other computer on the other end that "splits" the packages for you. I've managed to do it but keep in mind that it's only worth it if you have a colocation facility near by where you do not pay after the traffic. It looks like this: lan - gw ====== coloc - internet between the GW (your gateway) and the coloc (the computer you have total control over at a colocation facility) there are any arbitrary number of transports (eg. ADSL lines). the trick is to create one VPN connection over one ADSL line (I am using vtund, ether tunnel over TCP because UDP didnt work for some reason) and bond the tunXX intefaces together on both sides using ifenslave. after this the default route should be set to bond0 and if ip forwarding is enabled on the coloc machine it all miraculously works. vtund should be running as a server on the colocation machine and each client instance on the lan gw should connect using a different ADSL interface. if can be achieved by running pppd with "nodefaultroute" and with the combination of iptables MARK / ip rule / ip route different instances (connecting to different ports on the coloc machine) of vtund client connections will be routed on the correct interface using packet classification and static routes. we've been running an internet cafe on 2x1,5mbit ADSL here in Hungary reliably on this link adding only 2-3ms delay (because of the additional routing / extra computers) and having at least 90% bandwidth of the 3mbit. the colocation computer is also set up at the isp where we're getting the adsl from, so it's relatively "near" in terms of latency. it worked rather shitty (if at all) when one of the lines was 512 and the other one was 1500. i've also heard of isp's in England who support ethernet bonding so you may just order a bunch of adsl lines and bond them together on your end. there might be some in your area as well :) (definitely not here in Hungary though) -- diab _______________________________________________ LARTC mailing list / LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
