ZyXEL Communications ZyWALL USG 200 Series User Manual page 38

Chapter 1 Introducing the ZyWALL
Always use Maintenance > Shutdown > Shutdown or the shutdown
command before you turn off the ZyWALL or remove the power. Not
doing so can cause the firmware to become corrupt.
Table 3 Starting and Stopping the ZyWALL
METHOD
Turning on the
power
Rebooting the
ZyWALL
Using the RESET
button
Clicking
Maintenance >
Shutdown >
Shutdown or
using the shutdown
command
Disconnecting the
power
The ZyWALL does not stop or start the system processes when you apply
configuration files or run shell scripts although you may temporarily lose access to
network resources.
38
DESCRIPTION
A cold start occurs when you turn on the power to the ZyWALL. The
ZyWALL powers up, checks the hardware, and starts the system
processes.
A warm start (without powering down and powering up again)
occurs when you use the Reboot button in the Reboot screen or
when you use the reboot command. The ZyWALL writes all cached
data to the local storage, stops the system processes, and then does
a warm start.
If you press the RESET button, the ZyWALL sets the configuration
to its default values and then reboots.
Clicking Maintenance > Shutdown > Shutdown or using the
shutdown command writes all cached data to the local storage and
stops the system processes. Wait for the device to shut down and
then manually turn off or remove the power. It does not turn off the
power.
Power off occurs when you turn off the power to the ZyWALL. The
ZyWALL simply turns off. It does not stop the system processes or
write cached data to local storage.
ZyWALL USG 100/200 Series User's Guide