Remove and reinstall the optical module. If the fault persists, collect log information and contact Huawei technical support personnel. The self-loop of a single fiber cannot go Up. For example, whether the cable is active is passive and the cable. To restrict the use of third-party modules on their devices, host manufacturers usually conduct inspections on the optical modules that are connected, including but not limited to reading the optical module manufacturer name, model number, serial number, custom part of the data (encrypted. Check the model of the faulty optical module.
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