User's Manual

omdiag: Using the Diagnostic Service 23
omdiag chassis memory
Use the omdiag chassis memory command to test the system's RAM. The following test is performed:
NOTE: Shut down all other programs before running this test.
NOTE: Sufficient swap-space (temporary storage space used during a move or reconfiguration) is needed to
support the demands of the memory test.
NOTE: This test checks only memory seen by the operating system on systems that have redundant memory
support (spare bank or mirroring).
• Pattern Test — Checks your system’s memory by using a data patterns test. These patterns test the
memory's storage integrity and its ability to store data accurately. This test writes a pattern to each byte
in the memory and reads the pattern back. This verifies that the data paths, error-correction circuits,
and the memory devices themselves are working correctly.
omdiag chassis modem
Use the omdiag chassis modem command to run tests on all modems.
NOTE: This test runs on analog communication lines (regular telephone lines) and will not test a cable or Digital
Subscriber Link (DSL) modem. Currently, a test is not provided for testing cable or DSL modems; you can, however,
test cable or DSL Internet connections. To test an Internet connection that uses a cable or DSL modem, you must
use the network test.
NOTE: Shut down all other programs before running this test. If other programs use the modem, the test does not
run and you see "Cannot Run" in the Results window.
• Modem Test — Sends a series of AT command set commands to your modem to see if it is working.
The AT command set is a series of industry-standard instructions for the modem to perform.
NOTE: The correct modem drivers, when required, should be installed for the modem diagnostic tests to run
and provide the best results. For systems running Red Hat Enterprise Linux, in some cases, the "setserial"
command can be used to configure the modems without drivers.
The modem test performs the following tests:
– Hayes Basic Command Test— Uses the Hayes basic command set to exercise and diagnose the
functionality of the modem. The Hayes basic commands are written to the modem and the result
codes are verified and displayed either textually or numerically. Only important commands that
are common across different modems are used during this test.
– Hayes Extended Command Test — Uses the extended command group of the Hayes command
set to exercise and diagnose the functionality of the modem. The Hayes extended commands are
written to the modem and the result codes are verified and displayed either textually or
numerically. Only important commands that are common across different modems are used
during this test.