Viewing the optical signal on the Huijue switch

You can view the optical signal and module information on a Huawei switch using the display transceiver and display transceiver diagnosis commands.

Checking Optical Module Status

To view the status of an optical module on a specific interface, use the command:

display transceiver interface <interface-type> <interface-number>

This command shows details such as transceiver type, connector type, wavelength, transfer distance, vendor information, and whether Digital Diagnostic Monitoring (DDM) is supported . For example, it can display the module type (e.g., 1000_BASE_LX_SFP), wavelength (e.g., 1310 nm), and maximum transmission distance. If you want to check all optical ports at once, simply run:

display transceiver

This provides a summary of all optical modules installed on the switch .

Viewing Detailed Diagnostic Information

For more in-depth monitoring, including receive and transmit power, temperature, voltage, and bias current, use the verbose parameter:

display transceiver interface <interface-type> <interface-number> verbose

This allows you to read the DDM information, which is essential for troubleshooting link issues or verifying module performance . To check diagnostic parameters specifically, you can run:

display transceiver diagnosis interface <interface-type> <interface-number>

This command provides real-time diagnostic data for the optical module, helping identify faults or abnormal operating conditions .

Checking Interface and Module Information

Before querying, you may need to confirm the interface type and number. Use:

display interface brief

This lists all interfaces and their status, helping you identify the correct interface for the optical module .

Certified vs Non-Certified Modules

Huawei recommends using Huawei-certified optical modules. Non-certified modules may cause issues such as:

• Inability to install in the interface due to nonstandard size
• Data bus abnormalities affecting device operation
• Inaccurate or unavailable module information
• Potential damage to interface components

Summary

1. Use display transceiver to view all optical modules.
2. Use display transceiver interface <type> <number> for a specific port.
3. Add verbose to see detailed DDM information.
4. Use display transceiver diagnosis interface <type> <number> for diagnostic parameters.
5. Confirm interface details with display interface brief.
6. Prefer Huawei-certified modules to ensure accurate readings and reliable operation. These commands allow you to monitor optical signals, check module health, and troubleshoot link issues effectively on Huawei switches.