Chapter 3 Hardware Overview
ES-2024 Series User’s Guide
43
3.3 LEDs
The LEDs are located on the front panel. The following table describes the LEDs on the front
panel.
Table 2 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.
Ethernet Ports
LNK/ACT 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.
FDX/COL
(ES-
2024A)
Amber Blinking The Ethernet port is negotiating in half-duplex mode and
collisions are occurring; the more collisions that occur the faster
the LED blinks.
On The Ethernet port is negotiating in full-duplex mode.
Off The Ethernet port is negotiating in half-duplex mode and no
collisions are occurring.
POE
(ES-
2024PWR)
Amber On Power is supplied to the port.
Off Power is not supplied to the port.
Gigabit Ports
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.
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.
Mini-GBIC Ports
LNK Green On The port has a successful connection.
Off No Ethernet device is connected to this port.
ACT Green Blinking The port is sending or receiving data.
Off The port is not sending or receiving data.
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