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FusionServer Pro Rack Server iBMC Alarm Handling 31

This document describes iBMC alarms in terms of the meaning, impact on the system, possible causes, and handling suggestions.

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ALM-0x100000B1 LOM MCE/AER Error (Mainboard, Critical Alarm)

ALM-0x100000B1 LOM MCE/AER Error (Mainboard, Critical Alarm)


Alarm message:

The LOM arg1 triggered an uncorrectable error,arg2 (BN: arg3).

From iBMC V316, the CPU and disk alarms will also include the SN and BOM code and the mainboard and memory alarms will also include the BOM code.

This alarm is generated when an uncorrectable error is detected on the LOM.

Alarm object: mainboard


Alarm ID Alarm Severity Auto Clear





Name Meaning


Serial number of the LOM.


Error code of the alarm.


BOM code.

Impact on the System

The NIC may run unstably and the system may run abnormally.

Possible Causes

The mainboard is faulty.


  1. Replace the mainboard. 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: 2019-11-19

Document ID: EDOC1000054724

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