Diagnostics And Troubleshooting; Led Operation - 3Com EtherLink 3C985B-SX User Manual

5
Topics:
I
I
I
I
I
I
The 3Com World Wide Web site offers the latest drivers,
troubleshooting information, and software updates in the
Support area:
http://www.3com.com/

LED Operation

Two status LEDs are located above the cable connector.
After the driver is installed, the LEDs operate as follows:
LED
DATA On or
LINK
D
IAGNOSTICS AND
T
ROUBLESHOOTING
LED Operation
Using the 3Com NIC Diagnostics Program
Using the 3Com DOS Diagnostics Program
Uninstalling 3Com Software
Troubleshooting Tips
Constructing Loopback Plugs
Action
flashing
Off
On
Flashing
Off
Meaning
NIC is detecting network data. Frequency
of the flashes varies with the amount of
network traffic.
No connection between NIC and switch.
Connection between NIC and switch is good.
Software has disabled the port.
No connection between NIC and switch.