I currently have the xfinity unit that has the modem and router all in one unit. I want to get the Google Nest router and points for the house. Do I need to get a new xfinity unit that is a modem only? Can I buy a 3rd party router so I don't have to pay the monthly equipment rental fee or are 3rd party routers not compatible with this setup?
Just place the Comcast gateway device into bridge mode so that it acts only as a straight cable modem. Here's how;
Then connect the Google main router to it with an ethernet cable to ethernet port number 1.