Understanding how modems, switches, and routers work together is essential for network setup.
Understanding how modems, switches, and routers work together is essential for network setup.
I aim to relocate my router to a central area for stronger Wi-Fi, but the modem must stay in its current spot because the only other coaxial connection is roughly twice as far away. The challenge comes with my TP-LINK TL-sg108 (8-port switch) and the home office computers (two PCs plus an Xbox). Would it be possible to connect the modem to the switch and then run Ethernet about 100 feet to the new router location? If yes, how would static IP addresses be handled? Also, since the router runs OpenWrt, that might simplify things.
What type of modem do you have? Is it a device that combines modem and router functions, or a standalone modem with just a single rear port and no router or switch capabilities? If it's only a modem, then no, you should connect it in the order: modem → router → switch. If it includes a modem, router, switch, or similar components from your ISP, then yes.
It should function properly with Layer 2 switching, though you won't be able to add other devices. It's recommended to use a single long cable from the modem to the new router's position. Cat5e at Gigabit speeds can reach up to 100 meters (328 feet). You'd need to extend the cables from the router if you want to link those two items. This assumes the modem isn't already acting as a router.
The modem operates independently, featuring only one jack on the rear.
Navigate to Modem > Router > Switch because the modem assigns a WAN IP to the initial device, blocking further connections so no one else can reach the internet.