Specifications

xStack® DGS-3420 Series Layer 2+ Managed Stackable Gigabit Switch Hardware Installation Reference Guide

Figure 1- 12. LED indicators for the DGS-3420-52P

LED Description

Power

This LED will light green after powering the Switch on to indicate the ready state of the

device. The indicator is dark when the Switch is no longer receiving power (i.e. powered

off).

Console

This LED will blink green during the Power-On Self Test (POST). When the POST is

finished, the LED goes dark. The indicator will light steady green when a user is logged in

through the console port.

RPS

This LED will light green if the Redundant Powers Supply is in use. If the indicator is off, the

RPS is not in use. When the switch detects that the RPS is connected, the light will be

blinking.

This LED will light green if a Secure Digital (SD) card is plugged in. When the Switch is

reading or writing, the indicator will blink green. No light LED means there is no link. A solid

red LED indicates SD card failure.

Stack ID

For standalone Switches, this will display number “1”. For stacked Switches, this indicates

the position in the stacking box ID. The box ID is assigned either by the user (static mode)

or by the system (automatic mode). When “1” to “12” is displayed, this indicates the

stacking position of the switch. An “H” indicates the device was assigned as the stacking

Master. “h“ means the device was selected to be the Backup Master. A “G” is displayed

when the Safeguard Engine feature enters the exhausted mode.

Link/Act LEDs

The Switch has LED indicators for Link and Activity. The LED will light steady green when

there is a secure connection (or link) to a 1000Mbps Ethernet device at any of the ports, or

steady orange when there is a secure connection (or link) to a 10/100Mbps Ethernet device

at any of the ports. The LED will blink green when a 1000Mbps port is active, or blink

orange when a 10/100Mbps port is active. The LED remains dark when there is no link or

activity.

PoE

Only the DGS-3420-28PC and the DGS-3420-52P switches are equipt with a PoE LED.

When this light is on with a solid green light, it means that the corresponding ports are

feeding power to the PoE devices plugged in. When this light is on with a solid orange light,

it means that the port is in an error condition state. When this light is off, it means that the

ports are not supplying power to the devices plugged into the ports.