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Troubleshooting Guide

CloudEngine 16800, 12800, 12800E, 8800, 7800, 6800, and 5800 Series Switches

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An Optical Module Does Not Emit Laser

An Optical Module Does Not Emit Laser


  1. Use an optical power meter to measure the transmit power of the optical module.
  2. If the transmit power of the optical module is not in the normal range, replace the optical module.
If no optical power meter is available, replace the optical module with another one of the same model and check whether the new optical module can work normally on the interface. Alternatively, run the display interface transceiver verbose command to check whether the transmit power and receive power of the optical module are consistent with the nominal values.
Updated: 2020-01-07

Document ID: EDOC1000060766

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