Modem wont allow router internet access

[PsychoCT]

I have a Netgear N router that worked fine with our old modem we recently revamped our modem to the Motorola Surfboard Extreme and it won't allow the router to connect to the internet and I have no idea why.

 

[Emerald]

is it the Motorola 6120 or the Motorola 6580?

can you connect to the internet when directly connected to the Motorola?