17.1. Tracing to the TCP/IP data space
The first step to collecting traces to the data space is to ensure that the bufsize in CTIEZB00 in parmlib is set to at least 8Mb. It may need to be set higher depending on the amount of trace data desired, but 8Mb should be a good starting point. TCPIP will need to be restarted for the change in bufsize to take affect.
The starting writer step can be skipped because it will not be needed when writing to the data space. The trace data will be captured via an MVS Dump Comm command that will dump the TCPIP data space named TCPIPDS1. Be aware that this method may result in lost trace data since the possibility of wrapping is very possible. The dump command should be issued very soon after the problem happens ...
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