Cisco Systems 520 manual Explanation, PoE

Chapter 6 Monitoring the Switch

		Review the Front Panel View and the LEDs
Table 6-1	System-Level LEDS
LED	Explanation
SYSTEM	The SYSTEM LED shows the status of the switch (system).
	Solid green	Switch is healthy.
	Blinking green	Switch is running power-on self-test (POST).
	Solid amber	Switch is faulty, is rebooting, or is in recovery.
ALERT	The ALERT LED shows the presence of a switch problem.
	When the switch detects a problem on one or more ports, the Alert LED turns amber. Move
	the pointer over the Alert LED to display a description of the most recent problem detected,
	the port on which the problem exists, and the time that it was detected. The Alert LED stays
	amber until the Alert Log is cleared. Use the link to the Alert Log to see more details about
	the problem. For more information, see the “Review the Alert Log” section on page 6-8.
	Off (dark)	No switch problem is detected.
	Solid amber	A switch problem is detected.
PoE	The PoE LED shows the status of PoE being provided to the ports.
	This LED is available on switches that have PoE ports.
	Off (dark)	PoE to the ports is off.
	Solid green	One or more ports is receiving PoE.
	Blinking amber	One or more ports is not receiving PoE because of a fault.
RPS	The RPS LED shows the status of a connected redundant power system (RPS).
	This LED is available on switches that have an RPS connector.
	Off (dark)	RPS is off or is not properly connected.
	Solid green	RPS is connected and is ready to provide back-up power.
	Blinking green	RPS is connected but is unavailable because it is providing power
		to another device.
	Solid amber	RPS is in standby mode or is in a fault condition.
	Blinking amber	Switch internal power supply has failed, and the RPS is providing
		power to the switch.

	User Guide for the Catalyst Express 520 Switches
OL-12761-02		6-3