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Troubleshooting Guide

CloudEngine 16800, 12800, 12800E, 8800, 7800, 6800, and 5800 Series Switches

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Troubleshooting Procedure

Troubleshooting Procedure

After commands are configured to troubleshoot faults, pay attention to the configuration validation mode to ensure that the configurations take effect. Unless otherwise specified, this manual defaults to the two-phase validation mode.

  • In immediate validation mode, the configuration takes effect immediately after you run a command and press Enter.
  • In two-phase validation mode, you must run the commit command after commands are configured to commit the configuration.

Save the results of each troubleshooting step, so you can provide related information to Huawei technical support if your troubleshooting fails.


  1. (On a CE12800 or CE12800E) Check whether the master device has two registered MPUs.

    Run the display device command to check whether the master device has two registered MPUs. If the master device has only one registered MPU, the active/standby switchover cannot be performed.

    • If the master device has only one MPU, install an MPU to ensure that the master device has two MPUs.

    • If the master device has two MPUs but the standby MPU is not registered, remove and install the standby MPU to check whether the standby MPU can be registered successfully. If the standby MPU still cannot be registered, replace it with a new standby MPU.

    • If the master device has two registered MPUs, go to step 2.

  2. Check whether batch backup has been completed between the master and standby devices.

    Run the display switchover state command to check the backup status of the master and standby devices.

    <HUAWEI> display switchover state
       Switchover State  :  No slave                                                
       Switchover Policy :  Board Switchover                                        
       MainBoard         :  5                                                       
       SlaveBoard        :  NULL                    
    The system meets conditions for performing an active/standby switchover only when the Switchover State field displays Ready.
    • If batch backup is not completed, wait a period until batch backup is completed and then perform an active/standby switchover.

    • If batch backup has been completed but the active/standby switchover still cannot be performed, go to step 3.

  3. Collect the following information and contact technical support personnel.

    • Results of the preceding troubleshooting procedure
    • Configuration files, logs, and alarms of the devices

Updated: 2020-01-07

Document ID: EDOC1000060766

Views: 608620

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