Solution: First check whether the optical port is on, then check whether the optical module parameters (such as wavelength, rate and transmission distance) inserted by the devices at both ends match, and whether the optical module type (single mode/multi-mode) matches the. Solution: First check whether the optical port is on, then check whether the optical module parameters (such as wavelength, rate and transmission distance) inserted by the devices at both ends match, and whether the optical module type (single mode/multi-mode) matches the. An optical module is a critical component in modern optical communication systems, directly affecting transmission stability, network reliability, and operational efficiency. However, during installation and daily operation, various issues may arise. Therefore, understanding common optical module. The optical module cannot be properly identified and optical module information cannot be obtained. The working rate, duplex mode, and. Based on typical issues encountered with optical modules in daily switch applications, this document summarizes basic troubleshooting steps for resolving common faults: 1. Check compatibility between the optical module and switch Most switch brands have specific compatibility requirements. Customers in the use of optical modules will more or less encounter a variety of failure problems, such as optical module model selection is correct, the use of jumper is correct and some common problems, customers have the ability to judge and have a clear solution, but for some of the use of. Dust prevention and cleaning: Details determine success or failure 1) Unused protection: When an optical module is not in use, a dust cap must be installed to prevent dust from entering the port and causing poor contact.