Allied Telesis x900 Series Switch and SwitchBlade x908 User Manual
Page 28
Installation and Safety Guide
27
Stacking
LEDs
The following table describes how LEDs on the SwitchBlade x908 report
operations and faults on the rear panel stacking ports.
PWR01
LEDs
The following table describes LEDs on the PWR01 power supply unit.
PWR02
LEDs
The following table describes LEDs on the PWR02 power supply unit.
SD
Green
flashing
The Secure Digital memory card is active and should
not be ejected. The card can be safely ejected when
the LED remains off. Valid for AT-9924Ts,
x900-12XT/S, x900-24XT, x900-24XT-N,
x900-24XS, and SwitchBlade x908 switches.
LED
State
Description (cont)
LED
State
Description
STATUS
Green
The switch is the stack master.
Amber
The switch is a stack member.
Green
flashing
The switch is in the process of learning the stack
topology and selecting the stack master.
Off
The switch is not a stack member.
PORT 1
and
PORT 2
Green
A link has been established.
Amber
flashing
The link has a transmission fault.
LED
State
Description
Fault
Red
The temperature on the PSU has exceeded the limit of
75º C (167º F), or the fan failed.
PWR
Green
A PSU is installed in the switch and is delivering power.
A FOM does not have this LED.
LED
State
Description
Fault
Red
The temperature on the PSU has exceeded the limit of
75º C (167º F), or the fan failed.
PWR
Green
A PSU is installed in the switch and is delivering power.
A FOM does not have this LED.