IBM Power System POWER7 Series, Общие процедуры обслуживания

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The system service tools (SST) run one or more Licensed Internal Code or hardware service functions
under the control of the operating system. SST performs service functions concurrently with the
customer's application programs. The printer that is used for output must be an SCS-type data stream
printer that is attached to the same workstation input/output processor (IOP) or storage media unit.
Working with a communications trace
You can start or stop a communication line trace on a configuration object.
After you run the trace, the data can be formatted. You can view the formatted data by printing it.
You can use communications trace for the following situations:
v
To isolate errors that you cannot isolate by using the communications verification procedure
v
To collect more data when the problem analysis procedures do not provide enough information on the
problem
v
If you suspect a violation of the communications protocol or some other communications line problem
v
If you suspect line noise
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When the error messages indicate that there is an SNA BIND problem
Running and interpreting the communications trace requires detailed knowledge of communications
protocols. To obtain the most accurate sample of your line status, whenever possible, start the
communications trace before varying on the lines.
Note:
Use the online help from the Work with Communications Trace display to view a list of protocols.
Options and function keys
The Work with Communications Traces display has the following options and function keys:
v
Start trace (F6)
This function key starts the tracing of the data on a communications configuration object. The Start
Trace display appears after you press this function key. For more information, see “Starting a
communications trace” on page 26.
v Stop trace (option 2)
This option appears only on the Work with Communications Traces display. With this option, you can
end the trace and stop collecting data. A trace must be stopped before you can format, print, or delete
the data. To ensure that the trace is stopped, press the Refresh function key and check the Trace Status
field.
v
Delete trace (option 4)
The trace must be stopped (option 2) before you can use this option. Select this option to delete the
trace information when you no longer need the data. Traces are not automatically deleted when you
leave a communications trace function. This option releases system space so that you can start other
traces without having to increase the maximum amount of storage provided for the communications
trace. Traces that are not deleted are listed on the Work with Communications Traces display.
v
Format and print trace (option 6)
Use this option to format and print the trace. For more information about this option, see page
“Format and print trace” on page 27.
v
Display message (option 7)
Use this option to view a message that indicates the status of the trace that stopped because of an
error.
v
Restart trace (option 8)
Use this option to start a trace that has been stopped.
v
Change size (F10)
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