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SFP and SFP+ are terms for a type of transceiver that plugs into a special port on a switch or other network device to convert the port to a copper or fiber interface. These compact transceivers replace the older, bulkier GBIC interface. Although these devices are available in copper, their most common use is to add fiber ports. Fiber options include multimode and single-mode fiber in a variety of wavelengths covering distances of up to 120 kilometers (about 75 miles), as well as WDM fiber, which uses two separate wavelengths to both send and receive data on a single fiber strand.
SFPs support speeds up to 4.25 Gbps and are generally used for Fast Ethernet or Gigabit Ethernet applications. The expanded SFP standard, SFP+, supports speeds of 10 Gbps or higher over fiber.
Because these compact transceivers are hot-swappable, there’s no need to shut down a switch to swap out a module—it’s easy to change interfaces on the fly for upgrades and maintenance.
Another characteristic shared by this group of transceivers is that they’re OSI Layer 1 devices—they’re transparent to data and do not examine or alter data in any way. Although they’re primarily used with Ethernet, they’re also compatible with uncommon or legacy standards such as Fibre Channel, ATM, SONET, or Token Ring.
Formats for SFP, SFP+, and XFP transceivers have been standardized by multisource agreements (MSAs) between manufacturers, so physical dimensions, connectors, and signaling are consistent and nterchangeable. Be aware though that some major manufacturers, notably Cisco, sell network devices with slots that lock out transceivers from other vendors.
Black Box has partnered with Synnex to fulfill all Black Box GSA product orders. Black Box products are now available on Synnex GSA schedule GS-35F-1043-R.
Orders or Quotes - If you already know which specific Black Box products you need you can contact Synnex directly to request a quote or place an order by calling 877-230-5680 or email firstname.lastname@example.org
Technical Support or Product Selection - If you need technical and design support or help with product selection, Black Box will continue to assist you. Please contact us at 877-877-2269 or info@Blackbox.com.