The SFP port is a built-in optical port of a Gigabit Ethernet switch, so it cannot be directly connected with a twisted pair or a jumper. It needs to be connected to an optical module first, and then it can be transmitted with an optical fiber patch cord. Cisco introduces GPON with the Catalyst GPON platform. First of all, you need to unplug all the power supplies of your cable modem, wireless router and network switch. Once this is done, take one end of an Ethernet. To connect your fiber optic cable to a router, ensure you have the following: Fiber optic modem (ONT): Most fiber connections require an Optical Network Terminal (ONT), provided by your ISP. You can use the switch to connect Ethernet devices such as computers, file servers, printers, routers, switches, or hubs. Find a flat horizontal surface or a 19-inch rack.
[PDF Version]