Xbox internet connection trouble

[gar655]

I recently switched from DSL to Cable and now my xbox will not connect. I have the modem going to a wired 4 port router that I have going to 4 pre-wired rooms. In the room with the Xbox I have a 4 port switch (the same as I used when I was connected via dsl).

Off that switch I have a PS3 and my Xbox. The PS3 connects fine. The Xbox gives some kind of MAC address error. I've tried the turning off of everything and turning back on (as suggested in the trouble shooting guide) but I cannot get the Xbox to find or see the modem.

Any suggestions?

Thanks
Gene

 

[gorcorps]

I assume everything on the xbox network settings is set to automatic?

 

[sygyzy]

Can you tell us what the exact error is instead of "some kind of" error?