Figure 13: ERS 3550T/T-PWR+ Front Panel LEDs
Status LEDs
The System Status LEDs are located on the left side of the unit and include PWR, Status, UP,
Down, and Base. The following table defines the operation of the Status LEDs.
LED State Definition
PWR Off The unit power is off.
Green (Solid) Normal operation.
Green (Blinking) The system is in reset.
Status Off System cannot work properly (like
temperature is too high).
Amber (Solid) Non-critical warning (the system
can still work)
Amber (Blinking) The system failed self-test
Green (Solid) Everything is OK
Green (Blinking) TBD
UP/Down Off No Stack-up or Stack-down
connection is detected.
Amber (Solid) A Stack-up or Stack-down cable is
detected, but adjacency has not
been completed.
Green (Solid) The unit has formed a neighbor
with an adjacent unit over the
Stack-up or Stack-down cables.
Base Off The unit is operating in a
standalone mode, or not the stack
base unit.
Amber (Solid) The unit is operating as the
Temporary Base Unit.
Table continues…
LED state definitions
September 2016 Installing Avaya Ethernet Routing Switch 3500 Series 47
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