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Cisco IE 4000 Switch Hardware Installation Guide
Chapter 1 Product Overview
LEDs
Alarm IN1 and IN2
Power Status LEDs
The switch can operate with one or two DC power sources. Each DC input has an associated LED that
shows the status of the corresponding DC input. If power is present on the circuit, the LED is green. If
power is not present, the LED color depends on the alarm configuration. If alarms are configured, the
LED is red when power is not present; otherwise, the LED is off.
If the switch has dual power sources, the switch draws power from the power source with the higher
voltage. If one of the DC sources fails, the alternate DC source powers the switch, and the corresponding
power status LED is green. The power status for the failed DC source is either off or red, depending on
the alarm configuration.
The Power A and Power B LEDs show that power is not present on the switch if the power input drops
below the low valid level. The power status LEDs only show that power is present if the voltage at the
switch input exceeds the valid level.
For information about the power LED colors during the boot fast sequence, see the “Verifying Switch
Operation” section on page 2-31.
Blinking red Switch has detected a major alarm.
Red Switch has detected a minor alarm.
Color System Status
Color System Status
Off Alarm IN1 or IN2 not configured.
Green Alarm IN1 or IN2 configured, no alarm detected.
Blinking red Major alarm detected.
Red Minor alarm detected.
Color System Status
Green Power is present on the associated circuit, system is operating normally.
Off Power is not present on the circuit, or the system is not powered up.
Red Power is not present on the associated circuit, and the power supply alarm is
configured.
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