DDM (Digital Diagnostics Monitoring) is a feature that is included in optical modules, such as SFP, SFP+, QSFP, and QSFP+ transceivers. DDM provides detailed information about the optical module's performance and status, allowing network administrators to monitor and. This article provides instructions on how to view the Optical Module Status on your switch through the Command Line Interface (CLI). Figure 1 Schematic Diagram of Optical Module Connected to Switch 1. Check Optical Module and Port Status Execute the following command to view detailed interface and optical module status: show. When certifying an optical module, Huawei comprehensively verifies the functions of the optical module to ensure optical module quality. The functions include the installation and removal, transmit and receive power, signal transmission quality, basic information query, fault tolerance. Displays diagnostics for optical modules as a field replaceable unit (FRU) on PTX10K series devices. For example: The transceivers are polled in 1-second intervals for diagnostics data, warnings, and alarms.
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