SFP-FE20KT15R13 Juniper Networks 100Base-BX 20 km BIDI SFP | Fast Ethernet

Keep Fast Ethernet links alive across longer fiber runs with a 100Base-BX SFP designed for single-fiber operation. The SFP-FE20KT15R13 supports bidirectional transmission over optical fiber, making it a practical fit when you need to conserve strands without giving up reach. With a 20 km link distance, it suits access-layer extensions, remote closets, and point-to-point runs where standard short-reach optics fall short. This module is built for environments that still depend on Fast Ethernet connectivity and need a clean, predictable optical path. Its 1-port SFP design fits standard switch and media interface slots, while the BIDI architecture reduces fiber consumption on constrained plant. For teams maintaining mixed-generation infrastructure, it offers a straightforward way to extend service without replacing the surrounding network design. Choose this optic when the requirement is not more speed, but dependable reach on existing Fast Ethernet infrastructure. It helps preserve port availability, simplify cabling, and support remote endpoints with a compact transceiver that matches the economics of long-distance access links.