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How to display an optical module

Fiber optic splice closure knowledge brief Published 20 Nov 2020

Prepared for preliminary research by the RIVO OPTICAL knowledge desk. Confirm cable count, splice capacity, sealing class, tray layout, protection sleeves and installation requirements against current standards and product documentation.

You can display optical module information using CLI commands specific to your switch vendor, which provide module identification, link status, optical power, temperature, and other diagnostic data.Viewing Optical Module Information on Switches1. Huawei Switches
  • Use the command: display transceiver [interface interface-type interface-number | slot slot-id] to view basic information about the optical module on a specific interface .
  • For diagnostic data, run: display transceiver diagnosis interface [interface-type interface-number] to access Digital Diagnostic Monitoring (DDM) information, including temperature, voltage, current, transmit/receive power, and alarm thresholds .
  • Huawei recommends using certified optical modules to ensure compatibility and accurate readings .
2. Extreme Networks Switches
  • Check port and module status with: show port configuration or show port configuration no-refresh to view interface speed, duplex mode, link status, and module type .
  • For detailed module identity and DDM data, use: show ports transceiver information detail. This displays module type, part number, vendor, serial number, operating wavelength, and real-time diagnostics such as temperature, voltage, and Tx/Rx optical power .
3. Cisco Switches
  • To view port link status and transceiver information: show interface or show interface status for all ports .
  • For module identification and hardware details: show inventory or show idprom interface provides model, serial number, and EEPROM-stored specifications .
  • On Cisco Small Business switches, the command show fiber-ports-optical-transceiver can be used to display SFP or SFP+ transceiver status .
4. Accessing DDM Information
  • DDM provides real-time monitoring of key parameters such as temperature, voltage, and optical power .
  • DDM can be accessed via CLI commands or SNMP. For SNMP, ensure DDM is enabled, discover the module, configure SNMP on the host device, and use commands like snmpwalk -v2c -c [community string] [module IP] .1.3.6.1.4.1.9.9.91.1.1.1.1.10 to retrieve temperature or other metrics .
Best Practices
  • Always verify that the optical module is compatible with your switch to avoid inaccurate readings or link issues.
  • Regularly monitor DDM parameters to detect potential failures early.
  • Use vendor-specific commands for the most accurate and detailed information. By following these steps, you can effectively display and monitor the status and performance of optical modules across different network devices.

How to display an optical module - RIVO MULTITRADE OPTICAL SYSTEMS [PDF]

How to display an optical module

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Technical note

This reference is intended for preliminary fiber optic splice closure research. Compatibility, splice capacity, sealing class, tray layout, protection sleeves, installation methods, test limits and applicable standards must be verified for the specific project.

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