SolianHelix :
Unfortunately, 2Wire routers do not support Port Triggering. What is it you are trying to do with your xbox 360's?
If you are just trying to connect to the internet, just plug them both into the router at the same time. You should have no issues. If you are trying to create a LAN between the two, again you should have no issues by just using a router. If you want to bypass the router however, you can always use a crossover cable and just plug each xbox directly into one another, creating a small network just between the two xbox's.
Port triggering is a configuration option on a NAT-enabled router that allows a host machine to dynamically and automatically forward a specific port back to itself. Port triggering opens an incoming port when your computer is using a specified outgoing port for specific traffic.
Thanks SolianHelix. It doesn't surprise me that the 2Wire isn't capable of that function. It's pretty crappy.
To answer your question about what I'm trying to do; I can only use port forwarding for one of the two XBox's. Consequently one has an open NAT and the other is strict which is bad when you're trying to hookup with other players via XBox live. So I figured port triggering is the way to go.
Could I do this by hooking up a new router to the 2Wire in bridge mode?