As we know, a SFP module just looks the same as the SFP+ module. And most switches can both support SFP module and SFP+ module. So, do these two modules really refer to the same one? What’s the difference between them? SFP Definition SFP stands for Small Form-factor Pluggable. It is a hot-pluggable transceiver that plugs into the SFP port of a network switch and supports SONET, Gigabit Ethernet, Fibre Channel, and other communications standards. SFP specifications are based on IEEE802.3 and SFF-8472. They are capable of supporting speeds up to 4.25 Gbps. Due to its smaller size, SFP replaces the formerly common gigabit interface converter ( GBIC ). Therefore SFP is also called Mini-GBIC. By choosing different SFP module , the same electrical port on the switch can connect to different fiber types (multimode or single-mode) and different wavelengths. SFP+ Definition Since SFP supports only up to 4.25 Gbps, SFP+ that supports data rates up to 16 Gbps was later in...
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