What is SFP module?

The SFP module is an interface device that converts gigabit electrical signals into optical signals. It is an industry-standard small and pluggable gigabit optical transceiver module that can be plugged into the SFP of network equipment such as switches, routers, and media converters. The port is used to connect optical or copper network cables for data transmission. Usually we can find it in Ethernet switches, routers, firewalls and network interface cards.

What is an SFP port?

As mentioned above, SFP ports are commonly found in network equipment such as switches, routers, media converters, etc. Do you really know SFP ports? The SFP port is mainly used for signal conversion and data transmission. Its port conforms to the IEEE 802.3ab standard (such as 1000BASE-T), and the maximum transmission distance can reach 1000 Mbps (the SFP port of the switch supports 100/1000 Mbps).

Advantages of SFP port 

The SFP port is a hot-swappable I/O interface (referring to input/output interface), which has strong flexibility and is suitable for a variety of products, such as 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-ZX or 1000BASE -BX10-D/U ports can be exchanged, and the SFP port is backward compatible, supporting 10/100/1000Mbps.

SFP port of Gigabit switch

The SFP port of the Gigabit switch can be used to expand the switching function of the entire network by connecting various types of optical fibers (such as single-mode and multi-mode fiber) and network jumpers (such as Cat5e and Cat6), but the SFP port of the Gigabit switch The SFP optical module must be inserted before use, and then use fiber jumpers and network jumpers for data transmission. Nowadays, all enterprise-level switches on the market have at least two SFP ports, which can construct ring or star network topologies between different buildings, floors or regions through the connection of cables such as optical fibers and network jumpers.