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Troubleshooting Guide
CloudEngine 16800, 12800, 12800E, 8800, 7800, 6800, and 5800 Series Switches
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
An MPU Failed to Start

An MPU Failed to Start

Fault Description

An MPU cannot start.

Common Causes

  • The MPU is not properly installed.

  • The MPU becomes faulty.

  • A system software fault occurs.

Troubleshooting Procedure

  1. Run the display device alarm hardware command to check whether alarms about the MPU are generated. If the command output contains alarms about abnormal voltage or components, the MPU becomes faulty. Replace the MPU.

  2. Specify the system software for next startup again and check whether the current system software is normal.

  3. Remove and reinstall the MPU.

    1. Remove the MPU and check whether any pins are bent on the backplane connector. If pins are bent, replace the backplane.

    2. Reinstall the MPU and ensure that the MPU connector and backplane are correctly connected. Then check whether the MPU can start.

  4. Install the MPU to another slot to check whether it can start.

    Install the MPU to another slot when no service is transmitted on the MPU. Otherwise, services are interrupted on the MPU.

  5. Collect the following information and contact technical support personnel:
    • display diagnostic-information

    • display device alarm hardware

    • display device elabel

    • Indicator status of power modules and cards

    • Common user file and diagnostic log file

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Updated: 2020-01-07

Document ID: EDOC1000060766

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