What Can Go Wrong - ZyXEL Communications ZyWALL 110 Handbook & Instructions

4. Connecting the Device HA Pro Port:
The Device HA Pro port is the latest physical port on the DUT. You can use a cable
to connect the devices with each other.

What can go wrong

1. Why I can't see correct license status from myzyxel.com server?
On the Device-HA Pro setting, there is a function "Serial number of the licensed device
for license synchronization". You should entering device's S/N which with licenses. So
you can transfer all of the licenses to "Activate" device, and entering this device's S/N
in frame.
2. Why nothing happened after enabled Device-HA Pro?
After you enabled Device-HA Pro, the secondary device will not forward any traffic
any more except the latest physical port. So you must confirm thephysical port
already connected with each other.
3. Why after Device-HA failover to secondary device, it will not fallback to primary
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