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If this test fails and all other devices on the line are operating correctly, one of the
following could be the problem:
v The remote device that is being tested
v The remote modem
v The cabling at the remote site
If this test fails and all devices on the line are not operating correctly, run the cable,
modem, and I/O adapter tests in the order they are listed on the display for
further problem analysis.
Wireless network management utility: The wireless network management utility
(WNMU) test allows you to monitor the operation of a wireless network. This
utility collects information that assists in analyzing network problems. Before
running this utility, make sure that the line and the attached descriptions are
varied on, and a job is active. The following functions are available:
v Display active network topology
v Collect wireless network statistics
v Display statistics for any node on the wireless network
v Run tests between any wireless network nodes
Notes:
1. Running the wireless network management utility might affect the performance
of the network or decrease system performance.
2. For more information on the wireless LAN adapter indicators, see “Wireless
LAN adapter card indicators” on page 316.
3. For more information on analyzing network problems, see the LAN,
Frame-Relay and ATM Support information.
Wireless echo back test: The wireless echo back test verifies the correct operation
of a device on the wireless network. Because this test loads a diagnostic program
into the card, ensure that all lines from the communications I/O adapter are varied
off before running the test.
Note: If more than one device is not present in the network, the test will fail.
The system allows you to perform the echo back procedure using the following:
v RS-485 cable connection
v Radio connection (that uses the system configuration)
v Radio connection (that uses a test configuration)
The Echo back test on RS-485 cable connection verifies communication to any device
on the RS-485 wired network. If this test completes successfully, the adapter and
RS-485 wired link are working correctly. If this test fails, run the I/O adapter tests
in the order they are listed on the display to further analyze the problem.
The Echo back test on radio connection using system configuration verifies
communication to any device on the radio network by using the configuration for
the line selected. If this test completes successfully, the adapter and radio link are
working correctly. If this test fails, run the Echo back test on radio connection using
test configuration.
The Echo back test on radio connection using test configuration verifies communication
to any device by using a test configuration. The device must be within radio range
of the antenna that is connected to the Wireless LAN Adapter card. If this test fails,
Appendix A. OS/400 313