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Huawei Rack Server iBMC Alarm Handling 28

This document describes iBMC alarms in terms of the meaning, impact on the system, possible causes, and handling suggestions.
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ALM-0x1B01FFFF Incorrect Cable Connected/Incorrect Interconnection (CPUN QPI Link)

ALM-0x1B01FFFF Incorrect Cable Connected/Incorrect Interconnection (CPUN QPI Link)

Description

Alarm message:

Incorrect cable connected/Incorrect interconnection

This alarm is generated when the QuickPath Interconnect (QPI) bus is faulty.

Sensor triggering the alarm: CPUN QPI Link

Attribute

Alarm ID Alarm Severity Auto Clear

0x1B01FFFF

Major

Yes

Parameters

Name Meaning
N Indicates a CPU number.

Impact on the System

Services may be interrupted, and the system may crash or restart.

Possible Causes

  • The QPI link is faulty.
  • The CPU is faulty.

Procedure

  1. Gracefully power off the server.
  2. Remove the CPU indicated in the alarm message and check whether the CPU socket has twisted pins.

    • If yes, go to 5.

    • If no, go to 3.

  3. Check whether the CPU is faulty.

    • If yes, go to 4.

    • If no, go to 5.

    The following is an example of clearing the alarm.

    Incorrect cable connected/Incorrect interconnection (CPU1 QPI Link)
    1. Switch positions of CPU1 and a normal CPU.
    2. Power on the server. If the CPU indicated in the alarm message is changed, CPU1 is faulty. Otherwise, the QPI link on the mainboard is faulty.

  4. Gracefully power off the server, replace the faulty CPU, and power on the server again. Then check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 6.

  5. Gracefully power off the server, replace the mainboard,and power on the server again. Then, check whether the alarm is cleared.

    • If yes, no further action is required.

    • If no, go to 6.

  6. Contact Huawei technical support.
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Updated: 2019-06-04

Document ID: EDOC1000054724

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