Check the optical port power of Huawei switches

You can check the optical port power on Huawei switches using the display transceiver command with the verbose parameter to view both TX and RX power levels.Commands to View Optical PowerFor a specific interface: Use the command:CodeCopydisplay transceiver interface verbose This displays detailed information about the optical module, including:Current RX Power (dBm) – the receive power of the moduleCurrent TX Power (dBm) – the transmit power of the moduleHigh and Low Thresholds for both RX and TX powerTemperature, voltage, and bias current of the module For all optical ports:CodeCopydisplay transceiver This shows a summary of all optical modules installed on the switch .Alternative command for CloudEngine or S series switches:CodeCopydisplay interface transceiver verbose This also provides TX/RX power along with diagnostic information .Understanding the OutputTX Power (dBm): Indicates the optical power being transmitted by the module. If it exceeds the upper threshold or falls below the lower threshold, the module may not function properly .RX Power (dBm): Indicates the optical power received from the remote device. Values outside the threshold range may indicate fiber issues, misalignment, or module faults .Thresholds: Each module has default high and low thresholds for TX and RX power. Monitoring these ensures the optical link operates within safe limits .Other diagnostics: Temperature, voltage, and bias current can help identify module health and potential failures .Best PracticesAlways use Huawei-certified optical modules to avoid compatibility and performance issues .If RX or TX power is abnormal:Check fiber connections and cleanlinessVerify module compatibility and wavelength matchingReplace faulty modules if necessary Use the display transceiver diagnosis interface command for digital diagnostic monitoring (DMM) to get real-time optical module health data . By following these commands and monitoring the TX/RX power values, you can effectively assess the optical link quality and troubleshoot Huawei switch optical ports.