How To Run Diagnostics - AT&T 3B2 Off-Line Diagnostic Manual

How to Run Diagnostics
The dgn command is used to run diagnostics. It has the following format (the options are
explained below):
dgn
[device [device
#
I rep=? I ph=?-? I print=? I uell soak]]
device
device
#
rep=?
ph=?-?
print=?
uel
soak
Specifies the abbreviated name of the feature card on which you want the diagnostics
to run. For example, some of the abbreviations are as follows: sbd (System Board),
ports (PORTS card), and ni (Network Interface card), etc. If a device name is
specified, it must be the second key word in the command line.
Gives you the option of running diagnostic phases on a certain device. Some
examples are the SBO (sbd 0), one of four I/O PORTS cards (ports 0-3), and one
Network Interface card (ni 0). If a device number is specified, it must be identified
immediately after the device name in the command line.
Specifies the number of times you want the phase(s) to run. The range of allowed
repetitions is from 1 through 65,536.
Gives you the option of running a specific phase or a string of phases. When running
specific phases, be sure you know which phase you want or you could cause
problems to the system. For example, interactive phases will run if they are included
in a string of phases, but their effect on the system may be detrimental. When
possible, you must request that interactive phases be run separately. Whenever a
specific phase is requested, the device to be tested must also be designated. If you are
unsure of a phase type or number, use the 1 command to see the on-line phase table
for a device.
The option print=N suppresses printing during the run. The option print=Y forces
printing during the run. By default diagnostic messages are printed only if device
#,
ph=, or uel options are specified. The option print=? overrides these defaults. The
print=? option is only available in UNIX System V Release 3.2.2.
Gives you the option of running the phases in the unconditional (uel) mode. In this
mode, requested diagnostics do not stop when one phase fails. The results of each
requested phase are displayed as the phase is completed. This option cannot be used
with the soak option.
Gives you the option of running the diagnostic phases continuously while storing a
record of the failures until testing is completed. A summary of the phase failures is
displayed when testing stops. This allows you to check for intermittent problems by
comparing the number of failures against the number of times the phase ran. The
soak option is stopped by either entering any character at the console or using the
rep= option. The soak option cannot be used with interactive phases.
With the dgn command options, you can specify the device you want tested, the diagnostics you
want to be run, and how you want the testing to be handled. For example, you can either request that
all diagnostic phases be run on the SBO, or you can have only Phase 13 run on the SBO. To identify
phase numbers and types, you can either use the 1 command to see the on-line phase tables or refer to
the phase listings in this manual.
2-12 OFF-LINE DIAGNOSTIC MANUAL