Chapter 3 Hardware Overview
ES-2108 Series User’s Guide
47
3.3 LEDs
The following table describes the LEDs.
Table 3 LEDs
LED COLOR STATUS DESCRIPTION
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.
1 - 8
(Ethernet
ports) (ES-
2108, ES-
2108-F, ES-
2108-G and
ES-2108-LC)
Green Blinking The system is transmitting/receiving to/from a 10 Mbps
Ethernet network.
On The link to a 10 Mbps Ethernet network is up.
Amber Blinking The system is transmitting/receiving to/from a 100 Mbps
Ethernet network.
On The link to a 100 Mbps Ethernet network is up.
Off The link to an Ethernet network is down.
1 - 8
(Ethernet
ports) (ES-
2108PWR
only)
Green On The Switch is supplying power to the connected device that
supports PoE.
Off No device is connected to this port or the Switch is not
supplying power via the Ethernet cable.
Amber Blinking The system is transmitting/receiving to/from a 10/100 Mbps
Ethernet network.
On The link to a 10/100 Mbps Ethernet network is up.
Off The link to an Ethernet network is down.
100/1000 Green On The link to a 1000 Mbps Ethernet network is up.
Amber On The link to a 100 Mbps Ethernet network is up.
Off The link to an Ethernet network is down.
LNK/ACT Green Blinking The port is receiving or transmitting data.
On The port has a connection to an Ethernet network but not
receiving or transmitting data.
Off The link to an Ethernet network is down.
LNK (mini-
GBIC or Fast
Ethernet SFP
Slot)
Green On The port has a successful connection.
Off No Ethernet device is connected to this port.
ACT (mini-
GBIC or Fast
Ethernet SFP
Slot)
Green Blinking The port is sending or receiving data.
Off The port is not sending or receiving data.
LNK (100 FX) Green On The port has a successful connection.
Off No Ethernet device is connected to this port.
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