The 5G era has quietly arrived, and related technologies are developing rapidly, followed by the rise of 25G equipment. Compared with the traditional 10G interface, 25G cutting-edge technology can provide more bandwidth. As an important carrier of 25G technology, 25G optical modules have derived a variety of models that can cover different distance transmission requirements.
25G SFP28 conventional optical module
According to the transmission distance, 25G SFP28 optical modules can be divided into SR optical modules, LR optical modules, and ER optical modules. 25G SFP28 SR optical modules are generally matched with OM4 multi-mode jumpers for short-distance transmission, and the transmission distance is not more than 100 meters; 25G SFP28 LR and 25G SFP28 ER optical modules are generally matched with OS2 single-mode jumpers for long-distance transmission, SFP28 LR optical The theoretical maximum transmission distance of the module is 10 kilometers, while the maximum transmission distance of the SFP28 ER optical module is 40 kilometers. 25G SFP28 conventional optical modules are mainly used for interconnection of data center servers, switches and routers.
25G SFP28 Optical Module FAQ
What is the maximum transmission distance of the 25G SFP28 optical module?
At present, the transmission distance of the SFP-25G-ER optical module is the largest, which is 40 kilometers in theory. It is not ruled out that there will be a 25G optical module with a longer transmission distance in the future.
Can 25G SFP28 optical modules of different brands communicate with each other?
25G optical modules can communicate with each other as long as they meet industry standards
Can SFP28 SFP28 optical modules be inserted into SFP+ ports?
If there are no special requirements for the port identification software settings, it is theoretically possible. The working rate at this time is 10Gb/s instead of 25Gb/s.
Can the SFP+ optical module be inserted into the SFP28 port for use?
It is theoretically possible, but the actual operating rate is 10G.
Can SFP28 ports be interconnected with QSFP28 ports?
The answer is yes. Configure the 100G QSFP28 port on the device to 4*25G mode (if supported), then insert the 100G module into the port, and connect the SFP28 optical module in the SFP28 port through a one-to-four cable.
Concluding remarks
The 25GbE optical module is an important carrier for implementing 25G Ethernet technology in the cloud and enterprise data center environments. As an upgraded version of SFP+, SFP28 can handle 25Gbit/s per channel while ensuring backward compatibility with SFP and SFP+.