gtpn1m0p | Non-SNA Data Communications Reference |
To use the SLC link trace package, do the following:
- Initialize and mount the LKT tape.
- Issue the ZLKTN command to start the SLC link trace.
- Issue the ZLKTF command to stop the SLC link trace.
- Use the SLC link trace postprocessor to process the LKT tape.
Always stop the SLC link trace before a hardware switchover. Before
you can start the SLC link trace again, you must mount a new LKT tape.
The TPF system stops the SLC link trace during an IPL, but the LKT tape
remains open. To start the SLC link trace again, do the
following:
- Leave the original LKT tape mounted.
- Enter the ZLKTN command to start the SLC link trace again.
- Note:
- The trace block before the IPL occurred is not written to the LKT
tape. You can find this trace block in the catastrophic dump.
- Enter the ZLKTF command to stop the SLC link trace.
- Use the SLC link trace postprocessor to post-process the LKT tape.
If the basic subsystem (BSS) or time of day (TOD) clock is changed while
you are using the SLC link trace, the trace records are not sorted
correctly. Do the following to correct the sorting of the trace
records:
- Enter the ZLKTF command to stop the SLC link trace.
- Enter the ZLKTN command to start the SLC link trace again. The
correct sequence of traced link activity is restored.