Run the following command to view device board information and identification details of all optical modules: show inventory The output includes the module type, serial number, Cisco-compatible part number, and other details, which are retrieved from the pre-programmed data in the. Run the following command to view device board information and identification details of all optical modules: show inventory The output includes the module type, serial number, Cisco-compatible part number, and other details, which are retrieved from the pre-programmed data in the. When optical modules operate on a switch, it is usually necessary to read the module's internal information to understand its working status—such as connection status and real-time metrics like optical power and temperature. Additionally, identifying module information helps detect coding. When the optical module on an interface is faulty, you can run the display commands to view information about the optical module. Once the transceiver and fiber optic cable are plugged in properly in the switch optical module, the Optical Module Status page of. Optical module identification and status monitoring are essential daily tasks for network engineers maintaining Cisco switching systems. This guide provides complete, step-by-step CLI commands to view module type, DOM/DDM diagnostic data, vendor details, and compatibility information, fully. This article provides instructions on how to view the Optical Module Status on your switch through the Command Line Interface (CLI). How to view the optical module status on a switch 210? How to view the optical module status on a switch 210? 02-20-2021 11:32 AM How to view the optical module status on a switch 210? How to Check SFP Module Optical Signal Strength? 02-24-2021 09:05 AM I've never seen that assuming the.