xStack
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DGS-3120 Series Layer 3 Managed Gigabit Switch Hardware Installation Guide
35
H: When device was assigned as the
stacking Master
h: When device was selected to be the
Backup Master
G: When Safeguard Engine entering the
exhausted mode.
Port LED Mode
Indicator
A LED Mode Select Button to switch two modes in turn for all
10/100/1000Mbps ports on DGS-3120-24PC/48PC:
- Link/Act/Speed Mode
- PoE Mode
Green
Solid Light
A LED Mode Select Button to switch
Link/Act/Speed Mode
Solid Light
A LED Mode Select Button to switch PoE
Mode
LED Per
10/100/1000 Mbps
Port
Link/Act/Speed
Mode
Green
Solid Light
When there is a secure connection (or link) to
1000Mbps Ethernet device at any of the
ports.
Blinking
When there is reception or transmission of
data occurring at 1000Mbps.
Orange
Solid Light
When there is a secure connection (or link) to
10/100Mbps Ethernet device at any of the
ports.
Blinking
When there is reception or transmission of
data occurring at 10/100Mbps.
Off
Light off
No link.
PoE Mode
Green
Solid Light
Power feeding.
Orange
Solid Light
Error Condition.
Off
Light Off
No Power feeding.
LED Per SFP Port Link/Act
Green
Solid Light
When there is a secure connection (or link) to
1000Mbps Ethernet device at any of the
ports.
Blinking
When there is reception or transmission of
data occurring at 1000Mbps.
Orange
Solid Light
When there is a secure connection (or link) to
100Mbps Ethernet device at any of the ports.
Blinking
When there is reception or transmission of
data occurring at 100Mbps.
Off
Light off
No link
LED Per Stacking
Port
Link/Act
Green
Solid Light
When there is a secure connection (or link) to
Ethernet device at any of the ports.
Blinking
When there is reception or transmission (i.e.
Activity--Act) of data occurring at a port.
Off
Light off
No link
SD
Green
Solid Light
SD card plug-in
Blinking
Read/Write
Light off
No link
Red
Solid Light
SD card failure