When the optical port of the optical module is frequently up or down, first confirm whether the optical module is abnormal, you can check the optical module alarm information to troubleshoot the optical module at both ends and connect the optical fiber; for the. When the optical port of the optical module is frequently up or down, first confirm whether the optical module is abnormal, you can check the optical module alarm information to troubleshoot the optical module at both ends and connect the optical fiber; for the. A switch is connected to a remote device through optical interfaces and optical fibers. The two optical ports are Down and cannot communicate with each other. The optical module type does not. This type of optical module failure mainly includes port not UP, port status is UP but do not receive or send messages, port frequently up or down and CRC error. However, during installation and daily operation, various issues may arise. Check that the fiber type (single Troubleshoot the problem by following these steps: Confirm that both ports are not shut down.
[PDF Version]