I bought a Cable modem, model BEFCMU10, and a router, model BEFSR41. I try to connect 2 PCs with these equivments.

First, I connected 2 PCs with router and it work fine. They can access the other. Then I try to connect these to cable modem, it can not access internat. If I connect one PC directly to Cable modem then it work fine, too.

I did not know which step go wrong. Could anyone tell what is wrong about the setup.

BTW, It been work fine once, but after I rebooted the PCs. the Router can not receive IP from my cable Modem.