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FusionServer Pro Rack Server iBMC Alarm Handling 30

This document describes iBMC alarms in terms of the meaning, impact on the system, possible causes, and handling suggestions.
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ALM-0x2900000F Optical Module Voltage Abnormal (Port, Major Alarm)

ALM-0x2900000F Optical Module Voltage Abnormal (Port, Major Alarm)


Alarm message:

Abnormal voltage (arg4V) was detected on [arg2] arg3 on arg1. 

This alarm is generated when abnormal voltage was detected on the optical module connected to the network interface card (NIC).

Alarm object: port


Alarm ID Alarm Severity Auto Clear





Name Meaning

NIC name, for example, NIC 1, PCIe Card 5, or LOM.


Type of the NIC, for example, (NIC) or (FC).


Network port number, for example, port 1.


Current reading of the sensor.

Impact on the System

The related services will be interrupted.

Possible Causes

The optical module is faulty.


  1. Replace the optical module. Then, check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 2.

  2. Contact Huawei technical support.
Updated: 2019-08-05

Document ID: EDOC1000054724

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