Shulou(Shulou.com)06/01 Report--

People often wonder about the rate compatibility of SFP and SFP+, and most people don't know whether the SFP+ port can use SFP optical module. Many friends in the communications industry should encounter this problem, today Yi Tianguang Communication ETU-Link will dissect this problem.

According to the experiment, the gigabit SFP optical module can run in the 10 gigabit SFP + port, but the 10 gigabit SFP + optical module can not run in the gigabit SFP port. When a Gigabit SFP optical module is plugged into a 10 Gigabit SFP + port, the port has a speed of 1G instead of 10G. Sometimes this port will be locked at 1G until you reload the switch or issue some commands. So in most cases, the SFP optical module can be plugged into the SFP+ port.

In addition, SFP+ ports generally do not support speeds less than 1G. In other words, we cannot insert the 100BASE SFP optical module on the SFP + port. In fact, for this issue, it largely depends on the switch Switch model. Some SFP+ ports can support SFP and some do not. For example, almost all SFP+ ports on almost all Cisco CISCO switches support SFP optical modules, while many SFP+ ports on Brocade Brocade switches support only SFP+. Although it is often possible, it is more secure to follow the information provided by the switch Switch vendor.

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10 Gigabit SFP + is not automatically compatible with Gigabit SFP Optical Modules

In many cases, we can use SFP optical modules on SFP+ ports, but this does not mean that SFP optical modules plugged into SFP+ ports can support 1G. In the optical fiber link, if we connect the SFP optical module to the SFP+ optical module, it may not work properly! For this problem, if you use SFP+ high-speed cable, it is not compatible with gigabit SFPs.

Related recommendation: AOC active optical cable

The SFP and SFP+ optical modules used in network cabling and data center computer room construction need to ensure the same speed at both ends of the fiber link, such as the 10G SFP+ 1310nm 10KM LC DDM optical module at one end of the SFP+ port and the same optical module at the other end. The single fiber module needs to be used in pairs (SFP single fiber module transmission wavelength: ① Tx1310/Rx1550nm,Tx1550/Rx1310nm; ② Tx1490/Rx1550nm,Tx1550/Rx1490nm. SFP+ single fiber optical module transmission wavelength: ① Tx1270/Rx1330nm,Tx1330/Rx1270nm; ② Tx1490/Rx1550nm,Tx1550/Rx1490nm).

The official website of easy Tianguang Communications regularly updates the knowledge of SFP optical module or the solution of Switch optical module of switch. Welcome to follow us!

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