Trying to set up a repeater. Motorola SURFboard Gateway SBG6580 is downstairs. Want to use Buffalo Air Station as repeater upstairs. Air Station is plugged into my computer and Buffalo. Talked to Buffalo and they tried to connect the two but could not. Buffalo only has two green lights blinking. Doesn't see Motorola. I am a novice please help.

Computers & Internet - Arris - SURFboard - SURFboard Gateway SBG6580 DOCSIS 3.0 Wireless Cable Modem