Chapter 42 Device HA
ZyWALL USG Series User’s Guide
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Note: If both Zyxel Devices are turned on at the same time with Device HA enabled, then
they may send the heartbeat at the same time. In this case, the Zyxel Device with the
bigger MAC address becomes the passive Zyxel Device.
5 When using Device HA Pro to synchronize firmware, the location of the running firmware must be the
same in both active and passive Zyxel Devices. For example, if the running firmware is in partition 1 in the
active Zyxel Device (standby firmware in partition 2), then the running firmware must also be in partition
1 in the passive Zyxel Device (standby firmware in partition 2).
42.4.2 Configuring Device HA Pro
Go to Configuration > Device HA > Device HA Pro and configure the following screen.
Figure 545 Configuration > Device HA > Device HA Prol
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