Switch LEDs
Function
State
Meaning
Off
User mode not selected.
* The slow blink behavior is an on/off cycle once every 1.6 seconds, approximately.
** Applies only to switches that support PoE/PoE+.
Table 7: Port LEDs and mode behavior
Switch LEDs
Function
State/Mode
Meaning
Port LEDs
To display the information
for the port as selected by
the LED Mode select
button.
When transceivers and
SFPs are installed, this
LED is also used to
indicate that the
installation has occurred
by going on for two
seconds then off.
Activity/Link
Shows port Activity and
Link status.
This is the DEFAULT.
There is no dedicated
mode LED indicating this
mode.
The Mode LED function
should return to this
selection 10 minutes after
the last press of the LED
Mode button.
Speed
Shows port speed
configuration.
PoE***
Shows PoE information.
User
Shows user-selectable
behavior.
Activity/Link mode
selected
Port LEDs are displaying
link status and network
activity information
simultaneously.
Activity/Link mode is the
default mode and is in
effect unless another LED
mode has been selected.
Half-bright green
The port is enabled and
receiving a link indication
from the connected
device.
Activity flicker green
The percentage of time
that the LED is full-bright
is roughly proportional to
the percentage of full-
bandwidth utilization of the
port.
Half-bright green port link
indication remains on as
activity flickers from half-
bright to full-bright.
Slow flash orange*
The corresponding port
has failed its self-test.
Flashes simultaneously
with the Global Status
LED flashing orange.
Table Continued
Chapter 1 Introducing the 2930F switches
13
