If the fault is caused by incorrect configuration or networking environment, change the configuration or networking environment. Check whether the optical modules are Huawei-certified ones. Also, the optical transceiver with digital diagnostic monitoring (DDM) can help you monitor the real-time optical power. Tip #5: How to deal with a “no light” issue? There are several reasons for “no light” issues: incompatible SFP module, incorrect connection, SFP module not powered on, or bad. The primary factors affecting the successful docking of optical transceivers are as follows: Wavelength Different wavelengths experience varying transmission loss and dispersion in the fiber, leading to different transmission distances at the same speed. Therefore, it is essential to select optical. Customers in the use of optical modules will more or less encounter a variety of failure problems, such as optical module model selection is correct, the use of jumper is correct and some common problems, customers have the ability to judge and have a clear solution, but for some of the use of. When customers use optical modules, they will more or less encounter a variety of fault problems, such as whether the optical module model is selected correctly, whether the jumper is used correctly and other common problems.