Chapter 3 Hardware Overview
GS1900 Series User’s Guide
37
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 3 LED Descriptions
LED C O LO R STATUS DESCRIPTIO N
PWR Green On The system is turned on.
Off The system is off or has failed.
SYS Green On The system is on and functioning properly.
Blinking The system is rebooting and performing self-diagnostic tests.
Off The power is off or the system is not ready or malfunctioning.
Ethernet Ports
LNK/ACT Green Blinking The system is transmitting/receiving to/from a 100/1000 Mbps Ethernet network.
On The link to a 100/1000 Mbps Ethernet network is up.
Off The link to an Ethernet network is down.
PoE
(see
Section 1.1
on page 17
)
Green On Power is supplied to all PoE Ethernet ports.
Off There is no power supplied.
1G SFP Slots (Fiber Ports – see Section 1.1 on page 17)
LNK/ACT Green Blinking The system is transmitting/receiving to/from a 100/1000 Mbps Fiber network.
On The link to a 100/1000 Mbps Fiber network is up.
Off The link to a Fiber network is down.
Table 4 LED Descriptions (GS1900-8HP (Revision B1) and GS1900-10HP Only)
LED C O LO R STATUS DESCRIPTIO N
PWR Green On The system is turned on.
Off The system is off or has failed.
SYS Green On The system is on and functioning properly.
Blinking The system is rebooting.
Red On There is a system error.
PoE 10/100/1000Base-T Ports (1-8), 2 LEDs per port
Right Amber On The port is in PoE AF mode. That is, the Switch is following the IEEE 802.3af standard to
supply power to this port.
Green On The port is in PoE AT mode. That is, the Switch is following the IEEE 802.3at standard to
supply power to this port.
Off Power is not supplied to this port.
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