Planet Networking & Communication CS-2001 User Manual page 740

Step 4. To set up the backup device, be sure the backup device is turned off and
then configure the interface. Backup device's LAN port, WAN port and
DMZ port must be different from Master device's. After the configuration,
turn on the device.

The master device will daily synchronize itself with the backup device.

The Backup device's Management IP Address will be assigned
according to the Master device's setting while synchronization.
（Figure 25-4）
Figure 25-4 The High Availability Deployment
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