ZyXEL Communications USG60W - How to Enable Device HA Pro

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How to Enable Device HA Pro
The Device HA feature acts as a failover when one of the devices in the network is
dead or can’t access the Internet. Therefore, this is a popular feature for network
environments. In the previous firmware version, the USG supports AP
(Activate-Passive/Master-Backup) mode. In V4.20, the Device HA feature is enhanced
and named Device HA Pro.
Figure 335
Figure 336
Note:
In Device HA Pro, a “heartbeat link” is added for monitoring the interface
status and synchronizing settings. Follow the steps below to deploy the
Device HA Pro feature in your network environment.