Small form-factor pluggable interface
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The SFP interface (Small Form Factor Pluggable interface) is an industry standard daughter card used in networking devices (esp. those by Cisco). It interfaces a network device mother board (for a switch, router or similar device) with a networking cable using an SFF Connector. The modules are hot-swappable and work with SONET/SDH, Fibre Channel, Gigabit Ethernet, and other protocols. SFP interfaces can carry data at speeds of around 10GBit/s. Their main advantage is that new speeds can be interfaced to an expensive network device by changing only the SFP module.
Most SFP modules are optical transceivers using multimode (850 nm) or single-mode (1310 nm) cabling. Optical SFPs often include Digital Diagnostics (according to SFF-8472) that provide a powerful optical management tool. MRV provides a wide range of SFP-based systems with powerful features for physical network connectivity, including media converters, distance extenders, cross-connects, Ethernet switching and routing equipment, and wave division multiplexing solutions. The power of the SFP is in the density, flexibility, management and cost savings.
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See also
- XFP
- XENPAK
- http://www.lcalliance.com/lcinterface/pdfs/LC_SFF.pdf
- SFP-Format Fast Ethernet to E3/T3 Remote Bridges
Small form-factor pluggable (SFP) is a specification for a new generation of optical modular transceivers. The devices are designed for use with small form factor (SFF) connectors, and offer high speed and physical compactness. SFP transceivers are expected to perform at data speeds of up to 10 Gbit/s. Because SFP modules can be easily interchanged, fiber optic networks can be upgraded and maintained more conveniently than has been the case with traditional modules. Rather than replacing an entire circuit containing several modules, a single module can be removed and replaced for repair or upgrading. This can result in a substantial cost savings, both in maintenance and in upgrading efforts.