You can check the speed of a Huawei optical module using the display transceiver or display interface commands in the CLI.

Using the CLI to Check Module Speed

1. Display Transceiver Information
   • Run the command: display transceiver interface <interface-type><interface-number> This command shows detailed information about the optical module installed on a specific interface, including its supported speed, type, vendor, wavelength, and DDM parameters such as temperature, voltage, and optical power .
   • Example: display transceiver interface xgigabitethernet0/0/2 verbose This will display all relevant details for the module on port 0/0/2, including whether the module is compatible with the interface speed.
2. Check Interface Status
   • Use the command: display interface <interface-type><interface-number> This shows the administrative and operational status of the port. If the interface speed is mismatched with the optical module (e.g., a 10G module on a 1G interface), the port may not come up or may show errors .
   • Look for fields like Actual Cfg or Neg to confirm the negotiated speed between the module and the switch.
3. Verify Module Compatibility
   • Ensure the optical module is Huawei-certified. Non-certified modules may not report speed correctly or may be limited in functionality .
   • Avoid using a module with a higher rate than the interface supports, as this can prevent the port from establishing a link .
4. Optional Diagnostics
   • For deeper analysis, run: display transceiver diagnosis interface <interface-type><interface-number> This provides digital diagnostic monitoring (DDM) data, which can help verify that the module is operating within normal parameters and confirm its speed indirectly through signal quality and link status .

Summary

To check the optical module speed on Huawei devices:

• Use display transceiver for module details and speed.
• Use display interface to confirm the port's operational speed.
• Ensure module compatibility with the interface to avoid mismatches.
• Optionally, use display transceiver diagnosis for detailed diagnostics and DDM monitoring. Following these steps ensures accurate verification of optical module speed and proper operation on Huawei switches .