Check the diagnostic information, which shows that the received optical power is low, with a threshold of -3 to -23. Once it exceeds the threshold, an alarm will be triggered. Troubleshoot the link, and if the link is normal, replace the optical. The article Digital Diagnostic Function (DDM) For Optical Modules describes that DDM function can be used for real-time monitoring and fault location of the module's working status, in which the optical module's transmitting optical power and receiving optical power are the key parameters for. You can choose an appropriate alarm mode for optical modules. You can configure the alarm thresholds for the power, temperature, current, and voltage of optical modules, and the interval at which the inter-integrated circuit (I2C) collects optical module alarm information to shield unnecessary. First, the transmission class of the optical module fault investigation and solution method This type of optical module failure mainly includes port not UP, port status is UP but do not receive or send messages, port frequently up or down and CRC error. Next, verify whether both optical modules match in wavelength, speed, and transmission distance. Then, check. As core components of optical communication systems, the proper installation and use of optical modules directly impacts network stability. There are multiple ways that optical.