Thresholds and handling methods for the BEFFEC alarm reported by the LSC boards on OSN 8800

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If the pre-FEC BER of a 100G LSC board at the local site is 4 and the BEFFEC alarm is reported, the processing method is as follows:
When the receive optical power of the IN port on the WDM side of the LSC board is normal (PIN: �?6 to 0), the receive light flatness at the local site needs to be adjusted. Ensure that the difference between the receive light flatness values of a 100G wavelength and a 10G wavelength is within 2 dB and decrease the attenuation of the optical port of the 100G wavelength on the transmit-end M40V board at the peer site by 1�? dB. Improve the receive optical power of the 100G wavelength at the local site compared with the receive optical power of other 10G wavelengths to reduce the pre-FEC BER and clear the BEFFEC alarm.

Other related questions:
Method used to handle the TEMP_OVER alarm reported by the CXP board
1. Check whether a fan stops running on the fan board. If yes, remove and insert the fan board. If no, go to the next step. 2. Clean the air filter.

Possible cause of the OTU3_LOF alarm that is transiently reported by the NS3 board on the OSN 8800
The possible cause is that the embedded TDC module on the NS3 board is faulty. In general, the alarm can be cleared after the NS3 board is replaced.

Failure to clear the TEMP_OVER alarm from the SCC board on OSN 8800
1. Run the :cfg-get-scc-temperature:bid command to query the actual temperature of the board. The query result is 22.3?C, which is within the normal range. 2. Run the alm-del-curdata:num command to delete the alarm from the NE. The alarm is generated again. 3. Perform a cold reset on the active and standby SCC boards. The alarm persists. 4. Suspect that the SCC board hardware is faulty and replace the SCC board in slot 18. After the board replacement, the alarm persists and the alarm generation time is the initial alarm generation time. 5. Remove both the active and standby SCC boards and then re-insert them respectively. The fault symptom persists. 6. Run the :alm-get-bdalm-new command to query the boards one by one and then determine that the SCC board in slot 118 reports the TEMP_OVER alarm.

Method used to handle the failure to delete an FIU board from the OSN 8800
Delete logical fiber connections before deleting the board.

Meaning of the POWER_FAIL alarm with parameter 1 (0x05) reported on a 52SCC board of the OptiX OSN 8800
1. Parameter 0x05 indicates that the battery voltage is too low or the battery fails. 2. Check whether the battery jumper is connected.

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