Check the diagnostic information, which shows that the received optical power is low, with a threshold of -3 to -23. Once it exceeds the threshold, an alarm will be triggered. Troubleshoot the link, and if the link is normal, replace the optical. If non-Huawei-certified optical modules are used on a device produced after July 1, 2013 (January 1, 2016 for QSFP+ 40GE optical modules, CFP 40GE optical modules and CFP 100GE optical modules), the device generates alarms that prompt you to replace these optical modules with Huawei-certified. How to clear Unavailable Optical Module Alarm | SFP Module Alarm | ZTE BBU Current Alarms In this video you can learn that How to clear Unavailable Optical Module Alarm. more How to clear Unavailable Optical Module Alarm | SFP Module Alarm | ZTE BBU. 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. ENTITYTRAP/3/OPTICALUNAUTHORIZED: OID The optical module was not certified by Huawei Ethernet Switch. (Index=, EntityPhysicalIndex=, PhysicalName=" ", EntityTrapFaultID=, EntityTrapReasonDescr=" ") An optical module installed on the device is not a. The optical module on the port generates an alarm.