You can view optical module parameters using device documentation or CLI commands to check wavelength, transmit/receive power, fiber type, and diagnostic data.

Using Hardware Documentation

If you know the model or type of an optical module, you can consult the hardware description or pluggable module section of the device manual. This provides key parameters such as center wavelength, transmission distance, supported fiber types, receive optical power, and transmit optical power. This method is useful for planning or verifying module specifications before installation (Huawei documentation) .

Using CLI Commands on Running Devices

Huawei Devices

• Run the command: display interface transceiver on the relevant interface.
• This displays center wavelength, transmission distance, fiber type, receive and transmit optical power for the installed module .

Cisco Devices

• To check port status and transceiver details, use: show interface <interface-type> <interface-number> to view link status, negotiation speed, and traffic statistics.
• Use show inventory to see module model, serial number, and EEPROM-stored specifications.
• For detailed transceiver coding information: show idprom interface <interface-type> <interface-number> .

Extreme Networks Devices

• Run: show port <port_number> configuration to view interface speed, duplex mode, optical module type, and link status.
• For detailed module identity and digital diagnostic monitoring (DDM) data: show ports <port_number> transceiver information detail.
• This provides real-time temperature, voltage, Tx/Rx optical power, and alarm thresholds .

Key Parameters to Monitor

• Center Wavelength: The operating wavelength of the module.
• Transmit/Receive Optical Power: Indicates signal strength and link quality.
• Fiber Type: Single-mode or multimode compatibility.
• Temperature and Voltage: Ensures module operates within safe limits.
• Link Status: Confirms connectivity and proper negotiation.
• Module Identification: Model, vendor, and serial number for verification.

Tips

• Ensure the module is properly seated and the device recognizes it.
• Some high-speed modules (e.g., 40GE or 100GE) may not display full diagnostic information due to standard limitations.
• Use vendor-specific commands for the most accurate and detailed monitoring.

By combining hardware documentation and CLI commands, you can effectively view and monitor all critical parameters of optical modules to maintain network performance and troubleshoot issues efficiently.