# HA

This section describes how to perform an HA switchover.

#### Procedure

1. Choose System > Data Maintenance > HA. Check the server monitoring status. : indicates the normal state. indicates that the service is not enabled. indicates an abnormal state. In this case, check whether the configuration file is correct.

   The status of LEGOMonitor, LEGOWebSrv, Anti-DDoS Collector Monitor Service, and Anti-DDoS Collector Service is displayed on the standby device.

2. Click . Wait about two to ten minutes as prompted.

   - In the floating IP address scenario, the active and standby devices have the same login address. You can try to log in by refreshing the web page.
   - In the non-floating IP address scenario, you can try to log in by accessing the ATIC management center address of the standby device.
3. After the active/standby switchover is complete, perform the following operations:
   1. Check whether the ATIC management center can be normally started. To details on how to start the ATIC management center, see the ATIC HA Installation.
   2. Check whether the HA switchover is complete.
   3. Check whether the HA configuration status is normal. : indicates the normal state. indicates that the service is not enabled. indicates an abnormal state. In this case, check whether the configuration file is correct.

Parent topic: System Maintenance

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