Chapter 3 Hardware Overview

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
LEDCOLORSTATUSDESCRIPTION

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/malfunctioning.

 

 

 

 

Ethernet Ports

 

 

 

 

 

 

 

LNK/ACT

Green

Blinking

The system is transmitting/receiving to/from a 1000 Mbps Ethernet

 

 

 

network.

 

 

 

 

 

 

On

The link to a 1000 Mbps Ethernet network is up.

 

 

 

 

 

 

Off

The link to an Ethernet network is down.

 

 

 

 

PoE

Green

On

Power is supplied to all PoE Ethernet ports.

 

 

 

 

(GS1900-8HP

 

Off

There is no power supply.

only)

 

 

 

 

 

 

 

 

27

GS1900 Series User’s Guide