DGS-3100 Series Gigabit Stackable Managed Switch Hardware Installation Guide 
7 
This table describes the LED indicators for the DGS-3100-24TG : 
Location  LED Indicative  Color  Status  Description 
Solid Light  Power On 
Power
Green 
Light off  Power Off 
Solid Light  Console login CLI success 
Console
Green 
Light off  Console logout CLI or time out 
Solid Light  RPS connected and RPS power on 
RPS
Green 
Light off  RPS not connected or RPS power off 
Flashing  When any of the fans has failed 
Fan Err
Red 
Light off  When all fans work normally 
Solid Light 
When device is configured or selected to 
be a stacking master 
Master
Green 
Light off  When device is stacking slave 
Number 1-6  Display the Stacking Unit ID 
Flashing 
Character ‘L’ 
Locates the master unit when the locator 
function is enabled from user interface 
Stacking ID
Green 
Light off 
Indicates the device is in stand alone 
mode 
Solid Light 
A valid link is established on the stacking 
HX port
 
Flashing 
Data transmission or reception is 
occurring on the stacking HX port 
Per Device
SIO1/ SIO2
Green 
Light off 
No link is established on the stacking HX 
port 
Solid Light  Link on 1000Mbps 
Green 
Flashing Activity 
Solid Light  Link 10Mbps or 100Mbps  
Orange 
Flashing Activity 
LED Per 
10/100/1000 Mbps 
copper Port
Link/Act/Speed
Off Light off No link 
Solid Light  Link on 1000Mbps 
Green 
Flashing Activity 
Solid Light  Link 100Mbps  
Orange 
Flashing Activity 
LED Per SFP Port Link/Act
Off Light off No link 
Solid Light  Link 
Flashing Activity 
LED Per Stacking 
Port
Link/Act
Green 
Light off  No link