How to handle line card receive power less than sensitivity issue

5

optimize fiber or change to long-distance card .

Other related questions:
Which line is used by Huawei APs to receive PoE power, idle line or signal line
Huawei APs are powered devices (PDs) and support PoE power supply through both idle lines and signal lines, but signal lines are often used to supply power.

Relationship of the optical power, sensitivity, and bit errors
Relationship of the optical power, sensitivity, and bit errors: When the optical power is lower than the receiver sensitivity, bit errors do not necessarily occur. However, you are advised to adjust the optical power to the normal range as soon as possible.

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