Huawei Firewall

Use the display transceiver and display transceiver diagnosis commands to view detailed optical module information, including status, DDM metrics, and certification details.

Checking Optical Module Status

To view the basic status of an optical module on a Huawei device, run: CodeCopydisplay interface This command shows the interface rate, module type, link status (UP indicates normal operation), and traffic statistics, which are useful for troubleshooting link issues. If you are unsure of the interface, you can first run: CodeCopydisplay interface brief to list all interfaces and their types and numbers.

Viewing Detailed Optical Module Information

For comprehensive information, including manufacturer, wavelength, and transmission distance, use: CodeCopydisplay transceiver [ interface | slot ] [ verbose ] This command provides general, manufacturing, alarm, and diagnostic information of the optical module. Key parameters include: Transceiver Type (e.g., 1000_BASE_SX_SFP)Connector Type (e.g., LC)Wavelength (nm)Transfer Distance (m)Digital Diagnostic Monitoring (DDM) availabilityVendor Name and Part NumberSerial Number and Manufacturing DateTemperature, Voltage, and Bias Current with high/low thresholdsRX/TX Power with thresholds for alarms Viewing Diagnostic Data (DDM)To check real-time diagnostic metrics such as optical power, temperature, voltage, and current, run: CodeCopydisplay transceiver diagnosis interface This command displays DDM information, which helps monitor module health and detect potential issues like power exceeding thresholds or abnormal temperature.

Proper interpretation ensures the module operates within safe limits. Certified vs Non-Certified ModulesHuawei recommends using Huawei-certified optical modules because they are tested for installation, signal quality, fault tolerance, EMC, and environmental performance. Non-certified modules may: Fail to fit properly in interfacesCause data bus errorsDamage electronic components due to nonstandard connectorsGenerate inaccurate diagnostic readings Always verify module certification to ensure reliable operation and accurate monitoring.

Summary

Use display interface to check link status and traffic. Use display transceiver for detailed module information. Use display transceiver diagnosis to view DDM metrics.

Prefer Huawei-certified modules to avoid compatibility and reliability issues. These commands provide a complete view of the optical module's operational status, helping with troubleshooting, maintenance, and performance monitoring on Huawei firewalls and switches.