Allied Telesis AT-8500 Series manual Fiber Optic Port LEDs

Chapter 1: Overview

Fiber Optic Port LEDs

Table 6. LEDs for the 10/100Base-TX Twisted Pair Ports on the

AT-8524POE Switch (Continued)

LED	State	Description
Mode - DC	OFF	Indicates that the port has not established a
		valid link with its end node.
	Steady	Indicates that the port is operating in full
	Green	duplex mode.
	Steady	Indicates that the port is operating in half
	Amber	duplex mode.
	Flashing	Indicates that the port is operating in half
	Amber	duplex mode and that data collisions are
		occurring on the port.
Mode - POE	OFF	Indicates that the device connected to the
		port is not a powered device and does not
		require PoE.
	Green	Indicates that the end node is a powered
		device and that the port is providing power
		to it.
	Steady	Indicates that the port experienced a
	Amber	problem providing PoE to the end node. For
		further information, refer to Chapter 3,
		“Troubleshooting” on page 77.
	Flashing	Indicates that the port is connected to a
	Amber	powered device but that providing power to
		it would exceed the maximum PoE power
		budget of the switch. For further
		information, refer to Chapter 3,
		“Troubleshooting” on page 77.

This section applies to the AT-8516F/SC switch. The fiber optic ports on an AT-8516F/SC switch have two LEDs, labeled L/A and D/C. The LEDs

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