To add a second router and make sure they work properly and do not conflict with each other, there are some preliminary setup steps required.

Let’s first cover the most common scenario – where you have a separate modem and router, or a combined modem-router, and you just want to plug another router to your main router’s LAN port, so that the second router basically feeds off the ethernet connection of the first router. How To Add A Second Router To Comcast/Xfinity (Piggyback Method) Let’s cover detailed steps of the different ways to connect two routers with a Comcast/Xfinity setup, before offering some alternative ways you can expand a home network that will often work better than chaining routers together. This is the most common way you can get two routers to work together using a Comcast/Xfinity or any other package, but this switches the Wi-Fi signal over to the second router, which may or may not benefit the household in terms of getting a good overall signal.

Reserve a static IP for the second router on the first.

Set the IP address of the second router one digit higher than the first router.

Plug the second router into a LAN port on the first router.

However, if you want to connect a second router to the first on a Comcast/Xfinity internet package, here are the main steps in brief form: There are often better ways to expand connectivity in a home network than adding a second router.

Piggy-backing routers can work by changing some very specific settings, but connecting two routers to a modem separately is not recommended. It is usually possible to add a second router to a Comcast or Xfinity account, but is generally not recommended, as signal interference and other conflicts can stop the routers working properly. There might be a spare router lying around that they’d like to hook up to their first router, but is it possible to do this, and how do you actually do it? This is something Comcast or Xfinity users might want to do in some homes.

Setting up xfinity router