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You can select how much data is traced in a frame of data. The value that is
entered is the amount that is saved as part of the trace. The minimum value that is
allowed for both the beginning and the end value is 36 bytes. Those 36-byte
minimum values include the protocol header. The configuration object you are
tracing determines the maximum value that is allowed.
Notes:
1. The BSC protocol ignores the beginning and ending byte values.
2. The SDLC, high-level data link control (HDLC), X.25, frame relay, Ethernet,
distributed data interface (DDI), ATM, and token-ring protocols ignore the
ending byte value.
3. The minimum value that is allowed for the beginning byte value for local area
network (LAN) protocols (including frame relay protocols and ATM protocols)
is 72 bytes.
When all required options are complete, press the Enter key. The Work with
Communications Trace display appears.
If the communications object being traced is in varied off status when you start the
trace, the trace remains in waiting status until you vary the communications object
on. If the object is varied on, the trace will immediately go to the active state, and
the system will begin to collect trace data.
The trace remains active until one of the following occurs:
v You select the option to stop the trace on the Work with Communications Traces
display.
v You vary off the configuration object being traced.
v The configuration object being traced has an error.
v The trace buffer is full, and the option to stop on buffer full was selected.
Note: You can exit the communications trace function to do other work while the
trace is active.
Traces are not automatically deleted when you exit a communications trace
function. To return to the communications trace:
1. Select the Start a service tool option from the service tools (SST or DST) display.
2. Select the Work with communications traces option.
3. From the Work with Communications Traces display, you can check the status
of the trace or select to stop the trace.
Format and print trace
You must select the Stop Trace option before you format or print the trace. The
Format and print trace option allows you to select various formatting options and
prepare the trace data for printing. The options vary for each protocol. The
following is an example of the Format Trace Data display:
36 Service Functions V5R2