3com 4050 User Manual
16
C
HAPTER
1: I
NTRODUCING
THE
3C
OM
S
WITCH
4050
AND
4060
LEDs
lists LEDs visible on the front of the Switch, and how to read their
status according to color. For information on using the LEDs for problem
solving, see
solving, see
Table 4 LED behavior
LED
Color
Indicates
Port Status LEDs
Packet
Yellow
Packets are being transmitted/received on the port.
Off
No packets are being transmitted/received on the port.
Status
Green
A high speed (1000 Mbps) link is present, and the port
is enabled.
is enabled.
Green flashing
A high speed (1000 Mbps) link is present, but the port
is disabled.
is disabled.
Yellow
A low speed (10/100 Mbps) link is present, and the
port is enabled.
port is enabled.
Yellow flashing
A low speed (10/100 Mbps) link is present, but the port
is disabled.
is disabled.
Yellow flashing
(fast)
(fast)
Port has failed self-test and has automatically been
disabled.
disabled.
Off
No link is present.
Module Status LEDs
Green
The Module is installed and supported. The Link Status
has been determined for a single port Module.
has been determined for a single port Module.
Yellow
The Module is installed and supported. The Module
has multi-ports or there is no link for a single port
Module.
has multi-ports or there is no link for a single port
Module.
Yellow flashing
The Module is installed but not supported. Note that
the unit will continue to operate normally.
the unit will continue to operate normally.
Yellow flashing
(fast)
(fast)
A port on the Module has failed POST and has been
automatically disabled.
automatically disabled.
Off
The Module is not installed.
Unit LEDs
1–4
Green
Determines the identity of the Switch when
interconnected to another Switch to create a
Distibuted Fabric.
interconnected to another Switch to create a
Distibuted Fabric.
Off
A fault has occurred.
Unit Status LED
Green
The Switch is powered-up and operating normally.