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C H A P T E R 1 Overview
11
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Table 1.1: Switch LEDs
LED Color Indicates
1000BASE-X Port Status LEDs (GBIC LEDs)
Link/activity Green
Orange
Green flashing (steady)
Off
Link is present; port is enabled.
Frames are being transmitted/received on this
port.
Link is present; port is disabled.
Link is not present.
100/1000BASE-T Port Status LEDs
Link/activity Green
Orange
Green flashing (steady)
Off
Link is present; port is enabled.
Frames are being transmitted/received on the port.
Link is present; port is disabled.
Link is not present.
Speed Status Green
Off
1000 BASE-T operation.
100 BASE-TX operation.
10/100 Management Port Status LEDs
Link/activity Green
Orange
Off
Link is present.
Frames are passing through this port.
Link is not present.
Unit Status LEDs
Power 1 and
Power 2
Green
Orange
Off
Either or both LEDs green indicates the 480T
routing switch is powered up.
An orange power LED indicates a power,
overheat, or fan failure on the corresponding
power supply unit.
Both LEDs off indicates the switch is powered off.
MGMT Green flashing (slow)
Green flashing (fast)
Orange
The 480T routing switch is operating normally.
POST is in progress.
The switch has failed POST.