Setup help
Setup help
Your Comcast modem is on the far side of the house, which makes your Wi-Fi weak. You're looking for a wired connection using a 100ft Ethernet cable while keeping good Wi-Fi coverage. I tried to simplify your situation and suggest possible steps without needing deep technical knowledge.
Seamless setup with dual NAT configuration—ensure bridge mode is activated.
Is it an Xfinity modem/router bundle? Yes, Xfinity offers their own APs (Access Points) which are designed for easy integration with additional routers. You can contact them directly about these options since they’re typically plug-and-play and handle handoffs smoothly.
I follow this setup by plugging the Ethernet cable into a switch. Attach a wireless AP and any devices you need to the switch, allowing you to connect wired equipment while enjoying strong WiFi at that location. The main limitation is that devices can't move freely between the Comcast gateway and your AP; roaming performance for WiFi isn’t ideal, except in mesh networks. Remember, the Comcast box functions as a gateway—not a modem—so connecting two routers together isn’t recommended. As others have noted, this approach avoids double NAT issues.
Yes, you can configure the router as the gateway and enable DMZ mode. This avoids needing an additional router and leverages Comcast’s mesh system options.
Your statement doesn't make much sense. A Gateway combines a modem and router into one device. You can't simply turn a standard router into a gateway. To join a cable network like Comcast, you need a Docsis cable modem, which is included in the Comcast box. If you want to connect a router to the Comcast box, you must switch it to bridge mode, turning it into a modem again. This means the Comcast gateway will stop acting as a router and won't provide WiFi. Instead, you should purchase your own cable modem and router, avoiding any rental fees from Comcast. Be aware that Comcast's mesh solution is expected to involve monthly charges. Remember, nothing is free with these services.