Using the 3Com NIC Diagnostics Program
63
Figure 19
Packet Test Window
Running the Internal Loopback Test
The internal loopback test verifies the integrity of the NIC’s
on-board circuitry by writing, and then reading, data to and
from internal memory registers.
To run the internal loopback test:
1 Bring up the Packet Test window (
Figure 19
):
a
Start the 3Com NIC Diagnostics program.
b
Click the Diagnostics tab.
c
Click
Choose
Test
.
2 In the Internal Loopback Test area, click
Start
.
The Internal Packet Test window appears (
Figure 20
).
3 In the Internal Packet Test window:
a
To run the test continuously, click the
Continuous
check
box. To run the test just once, clear the
Continuous
check box.
b
Click
Start
.
c
If you chose to run the test continuously, click
Stop
to
halt the test.
d
To exit the Internal Packet Test window, click
Close
.
Book Page 63 Monday, June 7, 1999 2:14 PM
