The Summer of Fiber, Part II

The Summer of Fiber, Part II

| 7/11/2012 9:12:41 PM

In our next installation of The Summer of Fiber, we cover what is SFP+ is all about.
The small form-factor pluggable (SFP+) is a compact, hot-pluggable transceiver used for both telecommunication and data communications applications. SFP+ supports 10G, cannot support lower rates of speed, and is in compliance with the protocol of IEEE802.3ae, SFF-8431, SFF-8432; whereas the SFP and XFP fall under the MSA agreement (Multi-Source Agreement).

Unlike the SFP, SFP+ will exclusively offer DDMI (Data and Diagnostics Management Information). If a managed switch, Layer 2 media converter or other intelligent Ethernet equipment offers SNMP management, then the SFP+ with DDMI will provide the end user the ability to manage and monitor the SFP+ for its output value, vendor serial number, type of fiber, and many other pieces of information.
SFP+s are designed to support only 10G speed, and its dimensional size is different than SFP or XFP. Unfortunately, SFP+ is very similar in size to the SFP, so customers may assume that since the fit is close, connectivity will be possible, and this is not the case.
As the 10G market continues to develop, the demand for SFP+ will increase, as it is less expensive than its counterpart, the XFP; this is due to the fact that SFP+ modules leave more circuitry to be implemented on the host board instead of inside the module itself. The decision of what to purchase for 10G must be based on what the port of the equipment requires; that is, some network equipment will require XFP, others SFP+.

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