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. This guide uses the Moduletek SFP-25G-SR optical module connected to a Cisco C9300 switch as an example. Describes what an optical module is and FAQs, including the fundamentals, appearance and structure, key performance counters, common types, and naming conventions of optical modules, causes of optical module failures and corresponding protection measures, types of optical modules supported by. Optical modules work in the switch usually need to read the internal information of the module to understand its working status, such as module connectivity and real-time collection of light, temperature, etc.
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