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Should the fiber optic router be connected to the WAN or LAN
For fiber, your router needs the right WAN connection, speed support, and Wi-Fi capabilities. Routers designed for DSL (which uses phone line inputs) or cable (which uses coaxial inputs) won't work. They are typically used to establish a connection with your Internet Service Provider (ISP) using a modem. This article explains those roles in clear terms, so you know which port to use, why it matters, and how to spot each one fast. WAN Port or LAN Port: Where to Use? How to Identify WAN and LAN Ethernet Ports on Your Router?Yes, you can use your own router with fiber internet, as long as it has a Gigabit Ethernet WAN port to connect to your ISP's Optical Network Terminal. Upgrading to a Wi-Fi 6 or 6E router helps you get the full benefit of symmetrical fiber speeds. LAN ports connect local devices such as PCs, switches, printers, access points, IP phones, cameras, and NAS systems. The router is connected to the modem, as you can see in. The SFP+ port is a high-speed optical-to-optical signal conversion port, mainly used for 10G Ethernet and Fiber Channel network applications.
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