When it comes to fiber optic transceivers, how can we not introduce Cisco SFP+ . SFP + optical modules(10 Gigabit Small Form Factor Pluggable) is a hot-swappable, independent of the communication protocol optical transceiver, usually transmitted light wavelength is 850nm, 1310nm or 1550nm for 10G bps SONET / SDH, Fibre Channel, gigabit Ethernet, 10 gigabit Ethernet as well as other applications, including DWDM link. XFP contains similar SFF-8472 digital diagnostic modules, but extended use a powerful diagnostic tool.SFP+ optical transceiver is SFP sometimes called " mini-GBIC " upgrade. SFP+ will be the application of SFP in 10,000 new areas.
SFP + support SONET, Gigabit Ethernet, Fibre Channel (Fiber Channel), in addition to a quantity of other communications standards. This standard extensions towards the SFP +, can support 10.0 Gbit / s transmission rate, such as the 8 gigabit Fibre Channel and 10GbE.The creation of fiber optic and copper core version of the SFP + module version Xenpak, X2 or XFP sort of the module, the SFP + module area of the circuit to stay about the motherboard to attain, rather than a module.
Lots of people don't know the main difference sfp sfp +, so sometimes bring unnecessary trouble. The 10G module experienced from 300Pin, XENPAK, X2, XFP development, and eventually using the size the transmission and SFP 10G signal this is SFP +. SFP using its miniaturized low-cost benefits of meet the needs of high-density equipment, optical module, the implementation of the 2002 standard, 2010 has replaced the the XFP 10G market mainstream.
SFP+ Transceiver advantages:
First, SFP + has a more compact form factor than X2 and XFP transceivers (the same as the size to the SFP);
Second, and of the same type XFP, X2, XENPAK direct connection;
Third, cost than XFP, X2, XENPAK product low.
SFP + and SFP distinction:
1, SFP and SFP + appearance of the same size;
2, SFP protocol specification: IEEE802.3, SFF-8472;
SFP + and XFP distinction:
First, SFP + and XFP are 10G fiber module can communicate with each other and with other types of 10G module;
Second, SFP + is smaller than XFP Dimensions;
Third, because smaller SFP + signal modulation function, serial / deserializer, MAC, clock and data recovery (CDR), as well as electronic dispersion compensation (EDC) function from the module to the motherboard card;
Next,XFP compliance agreement: XFP MSA agreement;
The next, SFP + compliance protocol: IEEE 802.3ae SFF-8431, SFF-8432;
Last, SFP + is more mainstream design.
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