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Controller name/number
Indicates which controller originated the frame or record. In some
conditions, this data is not available, and the column remains blank.
Note: The formatted trace output is not security protected. Customer passwords
are shown going across the line.
Communications trace limitations: Only two communications traces can run
concurrently on one communications controller. Only one trace can exist for the
same configuration object at the same time. If OS/400 is available, access SST to
trace more lines.
Although a communications trace can start before or after the configuration object
is varied on, if it is important to see the starting information coming across the
configuration object, you must start the trace before varying on the configuration
object.
Two or more users can select the same trace to format and print. When multiple
users attempt to use the same resources (trace data), one user must wait for the
other user to finish before beginning to process the data.
SDLC communications trace considerations: When the system is configured as an
SDLC secondary station on a multipoint configuration object, the communications
controller traces all records or frames. The records or frames sent to the system
include those records and frames intended for other stations. When you use the
communications trace service tool to format the data for this configuration, the
resulting report might show received records that were intended for other stations.
On a single point-to-point line, where only one secondary station is configured,
SDLC traces all frames received before it gets the frames intended for other station
addresses. It is not until the secondary SDLC receives the other station addresses
that it knows which single-station address the communications equipment uses.
LAN communications trace considerations: Trace options are provided for some of
the LAN protocols that allow you to select, at trace start time, which data to trace.
For example, you can start a trace to collect data for only a specific remote
controller. Selecting one of these trace options when starting a trace will result in
less trace data and reduce the need for a large trace buffer.
Trace-filtering options are not available for all LAN communications adapters. If
the adapter does not support filtering, all data will be traced, and the following
informational message will appear in the prologue of the formatted trace: "Trace
Options not supported. All data was traced (no filtering)."
Perform automatic installation of the operating system
This option allows you to install the operating system.
Note: When your system is in the full or limited paging environment (see “System
paging environments” on page 2), the appearance of the Perform an automatic
installation of the operating system option varies depending on the operating
system. For more information, see Appendix A, “OS/400 Operating System”
on page 281.
Chapter 1. Dedicated Service Tools (DST) 39