Table 2, Baystack 420 switch led descriptions – Nortel Networks 1000ASE-XD User Manual
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Chapter 1 BayStack 420 Switch
29
Using the BayStack 420 10/100/1000 Switch
Table 2 BayStack 420 Switch LED descriptions
Label
Type
Color
State
Meaning
Power
On
Power status
Green
On
DC power is available to the switch’s internal circuitry.
Off
No AC power to switch or power supply failed.
Cascade
Up
Stack mode
Off
The switch is in standalone mode.
Green
On
The switch is connected to the upstream unit’.
Cascade
Down
Stack mode
Off
The switch is in standalone mode.
Green
On
The switch is connected to the downstream unit.
Base
Base mode
Green
On
The switch is configured as the stack base unit.
Off
The switch is not configured as the stack base unit (or is
in standalone mode).
Amber
Due to a stack error, the unit is unable to maintain the
stack connection.
10/100
Link/
10/100 Mb/s
port speed
indicator
Green
On
The corresponding port is set to operate at 100 Mb/s, and
the link is good.
Amber
On
The corresponding port is set to operate at 10 Mb/s, and
the link is good.
Off
The link connection is bad, or there is no connection to
this port.
Activity
Port activity
Green
Blinking
Indicates network activity for the corresponding port. A
high level of network activity can cause the LEDs to
appear to be on continuously.
HD/FD
Duplex Mode
Green
On/
Off
The port is configured to full duplex.
The port is configured to half duplex.