Why can an optical interface display interface Up/Down logs after the optical module is removed from the interface

When an interface frequently alternates between Up and Down, a large number of interface Up/Down logs are saved in the buffer. After the optical module is removed from the interface, logs cached in the buffer can still be displayed. You can run the undo info-center enable command to disable the information center and then run the info-center enable command to enable the information center.

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