ZyXEL Communications GS-3012 User Manual
Page 40
Dimension GS-3012 Gigabit Ethernet Switch
3-6
Hardware Connections
Figure 3-8 Front Panel LEDs
The following table describes the Ethernet port LEDs.
Table 3-2 Front Panel LED Descriptions
LED COLOR
STATUS
DESCRIPTION
BPS
Green
Blinking The system is receiving power from the backup power supply.
On
The backup power supply is connected and active.
Off
The backup power supply is not ready or not active.
PWR Green
On
Off
The system is turned on.
The system is off.
SYS Green
Blinking
On
Off
The system is rebooting and performing self-diagnostic tests.
The system is on and functioning properly.
The power is off or the system is not ready/malfunctioning.
ALM Red
On
Off
There is a hardware failure.
The system is functioning normally.
LNK/ACT
(Gigabit ports)
Green Blinking
On
Off
The system is transmitting/receiving to/from an Ethernet network.
The link to a 10/1000 Mbps Ethernet network is up.
The link to an Ethernet network is down.
Amber
Blinking
On
Off
The system is transmitting/receiving to/from an Ethernet network.
The link to a 100 Mbps Ethernet network is up.
The link to an Ethernet network is down.
On
The Gigabit port is negotiating in full-duplex mode.
FDX
(Gigabit ports)
Amber
Off
The Gigabit port is negotiating in half-duplex mode and no collisions are
occurring.
GBIC Slots
LNK
Green
On
The link to this port is up.