What Could Go Wrong - ZyXEL Communications NXC 2500 Handbook

2.2.3 What Could Go Wrong?

1 The controllers need to have the same configurations/profiles
and firmware, or the AP changes the setting/firmware after
doing fail over.
2 If NXC controllers 1 and 2 control different APs, after the APs
policy settings are applied, clear the Force Override option on
controller 2 via unchecking the Force Override Controller IP
Config on AP to avoid overriding the setting of APs from NXC
controller 1.
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