User's Manual

Chapter 1 Introducing the ZyWALL
ZyWALL USG 20/20W User’s Guide
32
1.3 Front Panel
This section introduces the ZyWALL’s front panel.
Figure 1 ZyWALL Front Panel
1.3.1 Front Panel LEDs
The following table describes the LEDs.
ZyWALL USG 20
ZyWALL USG 20W
Table 1 Front Panel LEDs
LED COLOR STATUS DESCRIPTION
PWR Off The ZyWALL is turned off.
Green On The ZyWALL is turned on.
Breathing The ZyWALL is in power saving mode.
Red On There is a hardware component failure. Shut down
the device, wait for a few minutes and then restart
the device (see Section 1.5 on page 34). If the LED
turns red again, then please contact your vendor.
SYS Green Off The ZyWALL is not ready or has failed.
On The ZyWALL is ready and running.
Blinking The ZyWALL is booting.
Red On The ZyWALL had an error or has failed.