Sharing resources between two LANS Options

[adriankamellard]

I have two dsl lines coming into my house, each with its own router on separate subnets. Some machines go through one router and some through the other. I would like to share resources between the two lans. I have one iMac which is on one lan through ethernet and the other through airport. Can the iMac be configured to bridge the two lans, allowing machines on one subnet to see machines on the second subnet?

For background, I have this setup up to give me some resilience and to share wan traffic over my slow dsl lines (I live a long way from the exchange). I have tried a dual wan router, but it proved slow and unreliable.

Thanks

Adrian

[NeSuKuN]

I'd suggest the following scheme:

traffic path:
Computers use the mac as gateway -> mac does network load balancing/traffic shaping and use both routers as gateways

physical scheme:

Computer(a)--\
Computer(--+Router(a)--------Mac-------Router(
Computer©--/ | |
\-----------Internet-------/

this way you'll only have one LAN with all the resources, if the mac has osxserver you can even have more advantages like WINS server to minimize broadcast packets while using windows sharing/samba, Directory services to have common authentification and per mahcine/user policies.

P.S. the forum broked the scheme, I'll do it on paint if I have free time