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How To View Port Status And Optical Module Information On Netgear Switches

Time: 2023-05-30
        To monitor the operating status of optical modules installed on a switch, it is necessary to read the module’s internal information, including link status, real-time optical power, temperature, and other diagnostic data. Checking module identification information also helps verify the coding compatibility between the optical module and the switch.
        This document uses a Moduletek SFP-10G-SR optical module installed on a Netgear M4250-26G4XF-PoE+ switch as an example to demonstrate how to view optical module information. Note that CLI commands may vary across different switch models.
1. Optical Module Link Status
        Run the following command to view interface status information:
        show port status <slot/port>
        The output includes interface rate, duplex mode, module type, and link status (the link up state is a prerequisite for normal module operation).
        Note: <slot/port> refers to the slot number and port number of the module.
        To view all ports and their numbering, run:
        show port status all
2. Switch Identification of Optical Modules
        Run the following command to view basic identification information of the inserted optical module:
        show fiber-ports optics-info <slot/port>
        The output includes module type, part number, vendor name, serial number, transmission rate, and other information derived from the programmed data in the module.
3. Digital Diagnostic Data of Optical Modules
        Run the following command to view digital diagnostic data of the optical module:
        show fiber-ports optics-diag <slot/port>
        The output includes alarm threshold data, DDM parameters, A2 HEX coding, and ACISS codes, which are parsed from the module’s A2 Low and A2 T00 register areas (using SFP as an example).
4. Optical Module EEPROM Data
        Run the following command to read the module’s EEPROM information from the A0 register area:
        show fiber-ports optics-eeprom <slot/port>
        The output includes part number, vendor name, serial number, manufacturing date, and other data from the module’s A0 Low and A0 High register areas (using SFP as an example).
5. Real-Time DDM Monitoring Data
        Run the following command to view real-time DDM (Digital Diagnostic Monitoring) information of the optical module:
        show fiber-ports optics <slot/port>
        The output provides real-time diagnostic and status data, including receive optical power, transmit optical power, temperature, and supply current. These parameters help verify whether the modules at both ends are operating normally.

        Moduletek provides a full range of optical modules compatible with Netgear switches. Welcome to purchase!
        For further inquiries about the above content, please contact us at: sales@moduletek.com
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