Running The Internal Loopback Test - 3Com EtherLink 3C985B-SX User Manual

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
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
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.
Using the 3Com NIC Diagnostics Program
(Figure 19):
(Figure 20).
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