Chapter 4 Monitoring
Check the Front Panel LEDs
4-6
User Guide for the Catalyst Express 500 Switches
OL-8122-01
Speed Off (dark) No link.
Solid light blue 10 Mbps.
Solid green 100 Mbps.
Blinking green 1000 Mbps.
Duplex Off (dark) No link.
Solid light blue Port is in half-duplex mode.
Solid green Port is in full-duplex mode.
PoE Off (dark) No power is allocated.
Solid green Power is allocated.
Blinking green
and amber
Power is denied to the port because providing power to the attached
device will exceed the switch power capacity.
Blinking amber Port is disabled due to a fault condition.
Table 4-4 System LED Colors in Legend
LED Color Description
SYSTEM Solid green Switch is healthy.
Blinking green Switch is running POST.
Solid amber Switch is faulty, is rebooting, or is in recovery.
ALERT Off (dark) No switch problem is detected.
Solid amber A switch problem is detected.
PoE Off (dark) PoE to the ports is off.
Solid green One or more ports is receiving PoE power.
Blinking amber One or more ports is not receiving PoE power because of a fault.
Table 4-3 Port LED Colors in Legend (continued)
Port Mode Color Description
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