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Product Overview
LEDs
Alarm OUT (PoE Models Only)
Color
Off
Green
Blinking red
Red
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.
Color
Green
Off
Red
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.
Port Status LEDs
Each port and SFP uplink slot has a status LED, as shown in
Color
Off
Solid green
Blinking green
Alternating
green-amber
Solid amber
System Status
Alarm OUT is not configured, or the switch is off.
Alarm OUT is configured, no alarm detected.
Switch has detected a major alarm.
Switch has detected a minor alarm.
System Status
Power is present on the associated circuit, system is operating normally.
Power is not present on the circuit, or the system is not powered up.
Power is not present on the associated circuit, and the power supply alarm is configured.
System Status
No link.
Link present.
Activity. Port is sending or receiving data.
Link fault. Error frames can affect connectivity, and errors such as excessive collisions, CRC
errors, and alignment and jabber errors are monitored for a link-fault indication.
Port is not forwarding. The port was disabled by management, an address violation, or STP.
After a port is reconfigured, the port LED can remain amber for up to 30 seconds while STP
checks the switch for possible loops.
Figure 3 on page 6
and described below.
7
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