Advertisements In a room across the house I have a WRT1900AC Router plugged into a Arris comcast modem. I have a CAT6 cable plugged into the WRT router going around the house and into an extension of the house. The extension is separated by a brick wall so WIFI signal there is weak. The Cat6 going around the house is terminated in a TP-Link 5-Port Gigabit Ethernet Switch. To sum it up Modem<->Router<->Switch. The issue is I have 3 devices connected to the switch; a PC, a Tivo, a Sony TV. The PC connects to the internet just fine, the Tivo and the TV both report no router. How can I make this work?