3Com 3C16981A-US - Superstack 3 Switch 3300 12port10/100 User Manual page 14

14 C 1: I
HAPTER NTRODUCING THE
S 3300
WITCH
Table 3 LED behavior
LED Color
*
Port Status LEDs
Packet Yellow
Off
Status Green
Green flashing
Off
Expansion Module Port Status LEDs
Packet Yellow
Off
Status Yellow
Yellow flashing
Off
Unit LEDs
1–8 Green
Off
Power/Self Test LED
Green
Green flashing
Yellow
Off
* If your Switch has 24 10BASE-T/100BASE-TX ports, these ports are numbered 1 to 24. If your
Switch has 12 10BASE-T/100BASE-TX ports, these ports are numbered 1 to 12. For both
models, ports supplied through an Expansion Module are numbered sequentially from the last
fixed port on the front of the unit.
Indicates
Packets are being transmitted/received on the port.
No packets are being transmitted/received on the
port.
A link is present, and the port is enabled.
A link is present, but the port is disabled.
No link is present.
Packets are being transmitted/received on the
Expansion Module port(s).
No packets are being transmitted/received on the
Expansion Module port(s).
A valid Expansion Module is installed.
An unrecognized Expansion Module is installed.
No Expansion Module is installed.
The Switch forms a stack with other Switch units;
the LED indicates the position of the Switch in the
stack and that a link is present. Note that although
there are eight LEDs, only four Switch units can be
stacked at present.
The Switch is stand-alone.
The Switch is powered-up.
The Switch is either downloading software or is
initializing (which includes running a Power On Self
Test).
The Switch has failed its Power On Self Test.
The Switch is not receiving power.