The Cisco® 100BASE-FX Small Form-Factor Pluggable (SFP) Fast Ethernet
Interface Converter (GLC-GE-100FX=) is a hot-swappable device that plugs into a
Gigabit Ethernet SFP port on Cisco Catalyst® 3750 Series, 3560 Series, and 2970
Series switches. The Cisco SFP provides full-duplex 100-Mbps connectivity
between switches over multimode fiber (MMF) infrastructures. It offers
investment protection and an easy migration path for customers moving to Gigabit
Ethernet connections in the future.
The 100BASE-FX SFP operates on ordinary multimode fiber optical link spans of
up to 2 kilometers (km) in length. Customers implementing Cisco 100BASE-FX SFP
can use 1000BASE-X SFPs in the future (including SX, LX/LH, ZX, and coarse
wavelength-division multiplexing SFPs).