GS-4012F/4024 User’s Guide

3.2.2 External Backup Power Supply Connector

The backup power supply constantly monitors the status of the internal power supply. The backup power supply automatically provides power to the switch in the event of a power failure. Once the switch receives power from the backup power supply, it will not automatically switch back to using the internal power supply even when the power is resumed.

3.3 Front Panel LEDs

The LEDs are located on the front panel. The following table describes the LEDs on the front panel.

Table 2 Front Panel LEDs

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

The system is turned on.

 

 

 

 

 

 

Off

The system is off.

 

 

 

 

SYS

Green

Blinking

The system is rebooting and performing self-diagnostic tests.

 

 

 

 

 

 

On

The system is on and functioning properly.

 

 

 

 

 

 

Off

The power is off or the system is not ready/malfunctioning.

 

 

 

 

ALM

Red

On

There is a hardware failure.

 

 

 

 

 

 

Off

The system is functioning normally.

 

 

 

 

Gigabit Ethernet Ports

 

 

 

 

 

 

1000

Green

Blinking

The port is sending/receiving data.

 

 

 

 

 

 

On

The link to a 1000 Mbps Ethernet network is up.

 

 

 

The link to a 10 Mbps Ethernet network is up when the 100 LED is

 

 

 

on.

 

 

Off

No Ethernet device is connected to this port or the port is

 

 

 

transmitting at 100 Mbps.

100

Amber

Blinking

The port is sending/receiving data.

 

 

 

 

 

 

On

The link to a 100 Mbps Ethernet network is up.

 

 

 

The link to a 10 Mbps Ethernet network is up when the 1000 LED

 

 

 

is on.

 

 

Off

No Ethernet device is connected to this port or the port is

 

 

 

transmitting at 1000 Mbps.

Mini-GBIC (SFP) Slots

 

 

 

 

 

 

LNK

Green

On

The port has a successful connection.

 

 

 

 

 

 

Off

No Ethernet device is connected to this port.

 

 

 

 

ACT

Green

Blinking

The port is sending or receiving data.

 

 

 

 

 

 

Off

The port is not sending or receiving data.

 

 

 

 

Chapter 3 Hardware Overview

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