Hello,
It is assumed that the temperature of the CXP is excessively high for a long time, and thus certain functional features on the board are faulty and invalid.
Please find below the solution:
The NE is unreachable by the NMS. When you perform a cold reset on the CXP on the NMS, the operation fails.
During discussion with customers, it is detected that the cooling function of the air conditioner in the equipment room is unavailable for several days and the air conditioner is in repair. The faulty PTN 1900 is installed at the top of the cabinet with a height of 2 meters above the ground.
It is determined that the temperature in the equipment room is excessively high in lately days, and thus the board cannot dissipate heat. Finally, the fault occurs.
Send the maintenance personnel to the site where the NE is installed immediately. The air conditioner is repaired and working normally when the maintenance personnel arrived. It is detected that the ACTX indicator on the CXP board is unlit.
Try to directly connect a PC to the equipment, but the PC cannot communicate with the equipment. Press the reset button on the CXP, but it does not work. It is determined that the CXP is invalid.
Ask the maintenance personnel to get a spare CXP of the same type to replace the faulty CXP from the spare part deport. After the NE database is restored, the services are restored one by one.
Till now, the problem is solved.
In the case of a large-scale networking, you can detect and solve new emergent problems in a timely manner through clearing current alarms as possible. In this manner, you can avoid degrade of accidents.
If a board is reporting or reported hardware alarms such as HARD_BAD and TEMP_OVER, when you check the NE on site, you can bring usable spare parts with you for board replacement. This helps to enhance the efficiency of rectifying faults, because many NEs at the access layer are installed in places far away from the spare part depot.
Thanks
