Allied Telesis AT-8500 Series manual Maste

Chapter 1: Overview

Table 8. LEDs for the Optional GBIC and SFP Ports on an AT-8550GB and

AT-8550SP Switches

LED	State	Description
Mode - SPD	Solid	Indicates that the port is operating at 1000
	Green	Mbps.
Mode - FDX	OFF	Indicates that the port is operating in
		half-duplex mode.
	Solid	Indicates that the port is operating in
	Green	full-duplex mode.
Mode - ACT	OFF	Indicates that there is no activity on the port.
	Flashing	Indicates that the port is transmitting and/or
	Green	receiving data packets.

System LEDs The system LEDs on the front panel display general status information, as described in Table 9.

		Table 9. System LEDs
LED	State	Description
FAULT	OFF	Indicates normal operation.
or FLT
	Red	Indicates that the management software is
		saving a change to its configuration. The LED
		goes off once the configuration has been
		saved.
		If the FAULT LED remains on, the switch or
		management software may have experienced a
		malfunction. Refer to Chapter 3,
		“Troubleshooting” on page 77 for instructions
		on how to troubleshoot a problem.
MASTE	Green	Indicates that the switch is functioning as the
R or		master switch of an enhanced stack.
MSTR
	OFF	Indicates that the switch is a slave switch or is
		not a member of a stack.
RPS	Green	Indicates that an optional redundant power
		supply is connected to the switch.
	OFF	Indicates that there is no optional redundant
		power supply connected to the switch.
PWR	Green	Indicates that the switch is receiving power.

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