Allied Telesis AT-9424T/POE, AT-9408LC/SP manual Stack LEDs, Mstr

Chapter 1: Overview

Stack LEDs

The Stack LEDs reflect the status of the two Stack ports on the optional AT-StackXG Stacking Module for the AT-9424Ts, AT-9424Ts/XP, and AT-9448Ts/XP Switches. The module, which does not have LEDs, is used to build a stack of up to five or eight devices. These LEDs remain off if the optional module is not installed. For further information, refer to “Expansion Slot” on page 39.

		Table 7 Stack LEDs
LED	State	Description
MSTR	Off	The switch is not the master unit of the stack.
	Green	The switch is acting as the master unit of the
		stack.
1 L/A	Off	Stack Port 1 has not established a link to a
		stacking port on another AT-StackXG Stacking
		Module.
	Green	Stack Port 1 has established a link to a
		stacking port on another AT-StackXG Stacking
		Module.
	Flashing	Stack Port 1 has established a link to a
	Green	stacking port on another AT-StackXG Stacking
		Module and is sending or receiving packet
		traffic.
2 L/A	Off	Stack Port 2 has not established a link to a
		stacking port on another AT-StackXG Stacking
		Module.
	Green	Stack Port 2 has established a link to a
		stacking port on another AT-StackXG Stacking
		Module.
	Flashing	Stack Port 2 has established a link to a
	Green	stacking port on another AT-StackXG Stacking
		Module and is sending or receiving packet
		traffic.
PRES	Off	The expansion slot for the AT-StackXG
		Stacking Module is empty.
	Green	The AT-StackXG Stacking Module is installed
		in the expansion slot.

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