Operation Manual

Chapter 3 Hardware Panels
GS1920 Series User’s Guide
32
3.3 LEDs
After you connect the power to the Switch, view the LEDs to ensure proper functioning of the Switch
and as an aid in troubleshooting.
Table 4 LED Descriptions
LED COLOR STATUS DESCRIPTION
PoE
(GS1920 48HP
only)
Green On Each Ethernet port’s LED is changed to act as a PoE LED by using the LED
MODE button on the front panel.
Off Each Ethernet port’s LED is changed back to act as a LNK/ACT LED by
releasing the LED MODE button on the front panel.
PWR Green On The Switch is turned on.
Off The Switch is off or has failed.
SYS Green On The Switch is on and functioning properly.
Blinking The Switch is rebooting and performing self-diagnostic tests.
Off The power is off or the Switch is not ready/malfunctioning.
ALM Red On A hardware failure is detected.
Off The Switch is functioning normally.
LOCATOR Blue Blinking Shows the actual location of the Switch between several devices in a rack.
Ethernet Ports and PoE
1-24 (GS1920-24/
24HP) and
1-48 (GS1920-48/
48HP)
LNK/ACT
Green Blinking The Switch is transmitting/receiving to/from a 10 Mbps or a 1000 Mbps
Ethernet network.
On The link to a 10 Mbps or a 1000 Mbps Ethernet network is up.
Amber Blinking The Switch is transmitting/receiving to/from a 100 Mbps Ethernet network.
On The link to a 100 Mbps Ethernet network is up.
Off The link to an Ethernet network is down.
PoE
1-24
(GS1920-24HP)
1-48
( GS1920- 48HP
only)
Green On Power supplied to all PoE Ethernet ports meets the IEEE 802.3at standard.
Amber On Power supplied to all PoE Ethernet ports meets the IEEE 802.3af standard.
Off There is no power supplied.
SFP Slots
25-28 (GS1920-
24/24HP)
45-50 (GS1920-
48/48HP)
Green On The uplink port is linking at 1000 Mbps.
Blinking The Switch is transmitting/receiving data 1000 Mbps.
Amber On The uplink port is linking at 100 Mbps.
Blinking The Switch is transmitting/receiving data 100 Mbps.
Off There is no link or port, the uplink port is shut down.