This content introducesthe phenomenon ofpower supply failurePower_abnormalcaused by business interruption, the impact on the system, the possible causes, troubleshooting the tools needed for the failure, precautions and processing steps. Phenomenon: A large number of single boards of equipment at a site are reset at the same time, and the service is interrupted. Impact on the system: A power supply failure causes service interruption. Possible causes: Cause 1: The power consumption of the network element exceeds the threshold power consumption of the network element. Cause 2: Abnormal single-board power supply. Cause 3: Loose connector or poor contact of the power supply cable. Cause 4: External power supply interruption or abnormal power fluctuation. Cause 5: Device power board failure. Cause 6: DC power distribution box failure.

Problem Description

OSN1500 device AUX single board Power_abnormal alarm parameter details

Alarm information

POWER_ABNORMAL alarm is reported on the AUX board.

Processing

para0: fixed to 0x01;

para1: fixed at 0x00;

para2: fixed to 0x01;

para3 (converted to binary, bit 1 is valid):

bit0 // Read 1.5V voltage status abnormality of this board

bit1 // Read the 1.8V voltage status of this board abnormally.

bit2 // Abnormal reading of 3.3V from power supply module of this board

bit3 // Abnormal 3.3V status of backup power supply.

Root cause of failure

None

Recommendations and Summary

The meaning of the AUX single board Power_abnormal alarm parameter is the same in all versions of OSN1500 devices.

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