Huawei switch viewing module for light reception

You can monitor Huawei switch optical modules' light reception and operational status using commands like display transceiver interface verbose to check received optical power, transmit power, and link status.

Checking Optical Module Status

1. Display Port and Transceiver Status Use the command: display interface This shows the port rate, transceiver type, link status (UP indicates normal link), and traffic statistics, which helps identify faults or abnormal behavior . For a summary of all ports, run: display interface brief

2. View Detailed Optical Parameters To check light reception (received optical power) and transmission power, execute: display transceiver interface verbose This command provides:

   • Received optical power (Rx) – indicates the light signal strength received by the module.
   • Transmitted optical power (Tx) – shows the output signal strength.
   • Wavelength and module type – ensures compatibility with the connected fiber.
   • Operational status – confirms if the module is functioning normally .

Compatibility and Certification Considerations

• Only Huawei-certified optical modules are guaranteed to work reliably. Certified modules display "HUAWEI" in the Vendor Name field and meet standards for optical power, signal quality, and environmental parameters .
• Using non-certified modules may cause installation issues, data bus suspension, or incorrect alarms. Always verify module certification using commands like display transceiver or by checking the module label .
• Ensure fiber type matches the module: single-mode modules with single-mode fiber, multimode modules with multimode fiber. Mixing types can prevent proper light reception .

Troubleshooting Tips

• Loopback Test: Connect the fiber jumper to the same optical module to verify if the port receives light correctly.
• Check Port State: If the port shows Administratively DOWN, enable it using the undo shutdown command.
• Rate Matching: Do not use a higher-speed module than the interface supports (e.g., 10G module on a 1G port).
• Monitor Optical Power: Ensure Rx and Tx values are within the normal range specified for the module to avoid link instability .

By following these steps, you can effectively view and monitor light reception on Huawei switch optical modules, verify module compatibility, and troubleshoot connectivity issues.