Leds - 3Com 3C16950 User Manual

14 C 1: I
HAPTER NTRODUCING THE

LEDs

S 1100
WITCH
Table 3 lists the LEDs visible on the front of the Switch, and their states
according to color. For information on using the LEDs for problem solving,
see "Checking for Correct Operation"
Table 3 LED behavior
LED Color
TCVR Yellow
Off
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
on page 29.
Indicates
Port 1 is a Transceiver Module fitted to the rear of the
Switch.
Port 1 is operating as a 10BASE-T port.
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.