I have a router hooked up as a "sub-router" to the main router in order to be able to connect devices to more than the 4 ethernet ports on the main router. Right now, any devices on the "sub-router" can see the network (shared files/folders and such) but the devices on the main router can't see anything on the sub-router. I have heard about a solution called "cascading" the routers such that the main router knows that the sub-router is actually a router and not a computer or other such device. Does anyone know how to do this? what kinds of values and stuff to change on the routers or something?