The current version of the switch does not support your optical module, and a version update is required. If the optical module is installed on a GE port, run the display interfaceGigabitEthernet x/x/x command to view port information when the optical module. This article will introduce the common issues in use and the corresponding solutions, such as: unsupported transceiver, SFP modules note detected, CRC error, invalid error detected, link flap, SFP unqualified etc. When you found the following. 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. 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. If your optical module isn't working properly, how to find and fix the problem? We list 5 main issues to help locate and repair network faults!.