3com 4900 sx 빠른 설정 가이드
14
C
HAPTER
1: I
NTRODUCING
THE
S
WITCH
4900 SX
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 5 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.
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 4900 SX unit will continue to operate normally.
the 4900 SX unit will continue to operate normally.
Off
The Module is not installed.
Unit LEDs
1–4
Green
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.
LED indicates the position of the Switch in the stack
and that a link is present.
Off
The Switch is stand-alone or the link is not present.
Power/Self Test LED
Green
The Switch is powered-up and operating normally.
Green flashing
The Switch is either downloading software or is
initializing (which includes running a Power On Self
Test).
initializing (which includes running a Power On Self
Test).
Yellow
The Switch has failed its Power On Self Test.
Off
The Switch is not receiving power.
Layer-3 LED
Green
Layer 3 is enabled on the Switch.
Off
Layer 3 is disabled on the Switch.
17702ua.bk Page 14 Friday, April 6, 2001 3:31 PM