Optical modules with serial numbers

Optical module serial numbers can be retrieved using device-specific commands or by checking the module label, enabling inventory tracking, diagnostics, and verification of module authenticity.

Huawei Devices

On Huawei switches, you can view the serial number of an optical module using the following methods: Electronic Label Command: Run display elabel to view the electronic label of the module.

The Bar

Code field indicates the serial number. Example output: CodeCopyBarCode=CB02UF1SWItem=10300Mb/sec-850nm-LC-33Manufactured=2011-01-09 Transceiver Command: Use display transceiver interface interface-type interface-number to see detailed module information. The Manu.

Serial Number field shows the serial number along with vendor and manufacturing date. Physical Label: You can also check the label attached to the optical module for the serial number. This is useful if CLI access is unavailable.

Cisco Devices

For Cisco devices, serial numbers and module details can be obtained via CLI commands: Show Inventory: show inventory lists all installed hardware, including SFPs, with Product ID (PID), Version ID (VID), and Serial Number. Transceiver Detail: show interface transceiver detail provides Digital Diagnostic Monitoring (DDM) metrics such as temperature, voltage, Tx/Rx power, vendor, and serial number. Logging Check: After inserting a module, show logging | include transceiver confirms recognition and helps detect unsupported transceivers.

Extreme Networks Devices

On Extreme switches, serial numbers can be viewed along with module health and diagnostics: Module Identification & DDM: Commands display Serial Number, Vendor Name, Part Number, Wavelength, Temperature, and Status. Example output: CodeCopySerial Number: M5123456Vendor Name: OEMWavelength: 1310 nmTemp (Celsius): 30. 38Status: Normal Port Status: You can query all ports or a specific port to monitor link connectivity and optical power, which helps verify module operation and compatibility.

Best Practices for Serial Number Management

Inventory Tracking: Maintain a spreadsheet or DCIM system logging serial numbers, product IDs, installation dates, and port mapping. Regular Monitoring: Use DDM metrics to track module health and detect degradation early. Replace modules if readings exceed thresholds.

Physical Handling: Store spare modules in anti-static packaging, in a dry environment, and within recommended temperature ranges (0–40°C for Cisco SFPs) to prevent damage. Vendor Verification: Use certified modules to avoid compatibility issues, data bus errors, or physical damage to interfaces. By following these methods, network engineers can efficiently identify, monitor, and manage optical modules across different vendor platforms, ensuring reliable network performance and accurate inventory control.