3Com EtherLink 3C985B-SX, User Manual

Page: 69 / 113

68 C
HAPTER
5: D
IAGNOSTICS AND
T
ROUBLESHOOTING
Before running the echo test, connect to an inactive
network on which only the server being tested and the
echo server are operating.
CAUTION: Running the echo test while connected to an
active network can cause intermittent failures. Connect to
an inactive network on which only the servers being tested
are operating.
To run the echo test:
1 Install a 3C985B-SX server NIC and the network driver
in each of two different servers and connect both to
the same inactive network.
The server that contains the NIC being tested is the sending
server . The echo server is the responding server .
2 On both servers:
a Start the 3Com NIC Diagnostics program.
b Click the Diagnostics tab to display the Diagnostics
window (
Figure 18 ).
c Click Choose Test to display the Packet Test window
( Figure 19 ).
3 On the responding server:
a In the Packet Test window, click Respond to display the
Responder window ( Figure 23 ). (The option to run the
test continuously or for a certain number of iterations is
determined by configuring the transmitting PC. You
cannot modify the selection here.)
b Click Start .
You must start the test on the responding server before
starting the test on the sending server.
4 On the sending server:
a In the Packet Test window, click Send to display the
Sender window ( Figure 23 ).
b To run the test continuously, click the Continuous check
box. Otherwise, the test runs once.
c Click Start .
d If you have chosen Continuous , click Stop to halt the
test. Otherwise, the test halts when it is finished.
Book Page 68 Monday, June 7, 1999 2:14 PM