ZyXEL Communications Ethernet switch Guide de l'utilisateur Page 38

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Dimension ES-4024 Ethernet Switch
3-4 Hardware Connections
Table 3-2 Front Panel: LED Descriptions
LED COLOR STATUS DESCRIPTION
SYS Green Blinking
ON
OFF
The system is rebooting and performing self-diagnostic tests.
The system is on and functioning properly.
The power is off or the system is not ready/malfunctioning.
ALM Red ON
OFF
There is a hardware failure.
The system is functioning normally.
LNK/ACT
(Ethernet ports)
Green Blinking
ON
OFF
The system is transmitting/receiving to/from a 10 Mbps Ethernet network.
The link to a 10 Mbps Ethernet network is up.
The link to a 10 Mbps Ethernet network is down.
Amber Blinking
ON
OFF
The system is transmitting/receiving to/from a 100 Mbps Ethernet network.
The link to a 100 Mbps Ethernet network is up.
The link to a 100 Mbps Ethernet network is down.
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.
FDX/COL
(Ethernet ports)
Amber
OFF The Ethernet port is negotiating in half-duplex mode and no collisions are
occurring.
ACT
(GBIC Slots)
Green On The port has a successful connection.
Off No Ethernet device is connected to this port.
ACT
(GBIC Slots)
Green Blinking The port is sending or receiving data.
Off The port is not sending or receiving data.
3.6 Stacking Scenario Examples
Use Ethernet cables when stacking the switches. See the following figures for example stacking scenarios using the
stacking module. The switches must form a closed ring in all scenarios.
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