DGS-3710 Series Layer 2 Managed Gigabit Switch Hardware Installation Guide
12
LED Indicators
The DGS-3710 Series switch’s front panel presents LED indicators for Power (PWR), System (SYS), Alarm (ALM),
FAN, Management (MGMT), and Link/Act indicators for all ports including the Gigabit Ethernet ports.
Figure 1–2 LED indicators for a DGS-3710-12C Switch
LED
Description
Power (PWR)
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.
System (SYS)
This LED will blink green during the Power-On Self Test (POST). When the POST is
finished, this LED will be on and steady.
Alarm (ALM)
When the alarm LED is solid red, it indicates that an alarm event has been detected or
that the temperature has exceeded to upper and lower threshold. The alarm LED will be
off when an alarm event was cleared or when the temperature is in the normal threshold.
Fan (FAN)
When the fan LED is solid red, it indicates that the system fan failed and/or the fan
module was removed. When all the fans are functioning properly, this LED will be off.
Management Port
Link/Act LEDs (MGMT)
The Management Port on the front panel presents LED indicators for Link and Activity.
The SPD light will illuminate solid green when a secure, 1000Mbps, connection is made
to the MGMT port. The SPD light will illuminate solid amber when a secure, 100Mbps,
connection is made to the MGMT port. The SPD light will be off when a secure, 10Mbps,
connection is made to the MGMT port; or when the link is down. The ACT light will be on
solid when the port link is up and will flicker when data is being sent and received to and
from the MGMT port. The ACT light will be off when the link is down.
GE Port
LED indicators for the Combo ports are located above the ports. A steady green light
denotes a valid 1000Mbps link on the port while a blinking green one indicates activity
on the port (at 1000Mbps). A steady amber light denotes a valid 10 or 100Mbps link on
the port while a blinking amber one indicates activity on the port (at 10 or 100Mbps).
These LEDs will remain dark if there is no link/activity on the port.
