SFP is the abbreviation of Small Form-factor Pluggable. It is hot-pluggable transceiver which is plugged into SFP port of a network device like router, switch etc. The backbone says it's “12 strand multimode 50 micron fiber. ” In the switch SFP interfaces on both ends, I first tried SFP-10GBase-LRM modules, and then SFP-10GBase-SR - both report properly to the switch (“show int ” list the. This article aims to provide a comprehensive understanding of how network switches are connected to fiber optic cables, the types of fiber optic connectors used, and the configuration processes involved. Fiber optic technology has revolutionized data transmission, offering unparalleled speed and. The optical fiber interface is the physical interface used to connect optical fiber cables. The principle is that the light enters the light-sparse medium from the light-dense medium, resulting in total reflection. Usually, there are several types such as SC, ST, FC, etc.