Huawei optical module not in place alarm

The "Huawei optical module not in place" alarm typically indicates that the optical module is either not securely installed, faulty, or not Huawei-certified.

Common Causes

1. Improper Installation: The optical module may not be fully seated in the port, causing the system to detect it as absent or invalid .
2. Faulty Module: The module itself may have a defective laser transmission circuit or abnormal transmit/receive optical power .
3. Non-Huawei or Non-Certified Module: Huawei devices perform authentication on optical modules. Third-party or early-delivered Huawei modules may trigger alarms even if they function normally .
4. Contaminated Optical Bores: Dust or dirt on the module's optical interface can reduce optical power and trigger alarms .

Troubleshooting Steps

1. Check Installation: Remove and reinstall the optical module to ensure it is properly seated .
2. Verify Optical Power: Use an optical power meter or run commands like display transceiver slot slot-id verbose or display interface transceiver verbose to check transmit (Tx) and receive (Rx) power levels .
3. Clean Optical Bores: If contamination is detected, clean the optical bores with a cotton swab and cover idle modules with dust caps .
4. Check Module Certification: Confirm the module is Huawei-certified. If it is not, either replace it with a certified module or disable alarms for non-certified modules using commands like transceiver non-certified-alarm disable on supported switches .
5. Test on Another Port: Install the module in a different compatible port to determine if the fault is port-specific .
6. Reboot or Power Cycle: If the module appears normal but the alarm persists, reboot the device or power cycle it cautiously, as this may affect services .
7. Replace Module: If all checks fail, replace the optical module with a known good one of the same type .

Additional Considerations

• Service Impact: Removing or reinstalling modules, rebooting, or upgrading software can affect live network services. Plan maintenance windows accordingly .
• Logging and Support: If the alarm persists after troubleshooting, collect logs, alarm information, and configuration details, then contact Huawei technical support for further assistance . By following these steps, you can identify whether the "not in place" alarm is due to installation issues, module faults, or certification problems, and take appropriate corrective action.