LED
State
Definition
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.
Green (Solid)
The unit is operating as the Base
Unit for the designated stack.
Green (Blinking)
There is a stack configuration
error. Either multiple base units or
no base unit is configured in the
stack.
LED state definitions
December 2017
Installing Ethernet Routing Switch 3500 Series
47