Switch Id Led; Figure 8: Switch Id Led; Figure 9: Switch Id Led - Allied Telesis AT-x550-18XTQ Installation Manual

Chapter 1: Overview

Switch ID LED

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The Switch ID LED, shown in Figure 8, displays the ID number of the
switch. A stand-alone switch has the ID number 0. Switches in a VCStack
have the numbers 1 to 4. The procedures in Chapter 8, "Powering On and
Verifying the Stack" on page 105 explain you can control the assignments
of the ID numbers when you power on the stack for the first time.
Switch ID LED
The states of the LED when the switch is not operating in the low power
mode are shown in Figure 9.
The switch is booting up.
The switch has encountered a fault condition.
The switch is operating as a stand-alone unit, with the ID
number 0.
The switch has an ID number of 1 to 4 as part of a
VCStack.
The dot in the lower right corner flashes when the switch
accesses USB memory.
The switch displays the letter "F" for fault on the ID LED if it detects one of
the following problems:
 A cooling fan has failed.
Figure 8. Switch ID LED
Figure 9. Switch ID LED