ZyXEL Communications NXC5200 User Manual page 372

Chapter 23 Device HA
synchronize, but it is still recommended that the backup NXC synchronize with a
master NXC on a secure network.
The backup NXC gets the configuration from the master NXC. The backup NXC
cannot become the master or be managed while it applies the new configuration.
This usually takes two or three minutes or longer depending on the configuration
complexity.
The following restrictions apply with active-passive mode.
• The master NXC must have no inactive monitored interfaces.
• The backup NXC cannot be the master. This refers to the actual role at the time
of synchronization, not the role setting in the configuration screen.
The backup applies the entire configuration if it is different from the backup's
current configuration.
372
NXC5200 User's Guide