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. 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. This guide introduces how to read optical module information when it is installed on a network card in a Linux system. This example uses the Moduletek SFP-10G-LR module connected to an Intel X520 network card. Check. When the optical module on an interface is faulty, you can run the display commands to view information about the optical module. Let's discuss how mastering coding can improve your network's stability, efficiency, and even allow you more foresight to diagnose problems and prevent costly. 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 a practical guide to using the mlxlink command to inspect the link and module status of NVIDIA's ConnectX-6 (CX-6) network interface card (NIC).