gtpc1m7kTransmission Control Protocol/Internet Protocol

Writing the IP Trace Table to a Real-Time Tape

Before you can create an IPTPRT report to view or print offline, you must write the IP trace table to a real-time tape. See Using the Offline IPTPRT Utility to Create an IPTPRT Report for more information about creating an IPTPRT report.

To write the IP trace table to a real-time tape, do the following:

  1. Ensure you have a real-time tape mounted for the TPF system. See TPF Operations for more information about mounting a tape.
  2. Enter one or more ZTTCP TRACE commands with the START parameter specified to start the IP trace facility and specify which data you want to trace. See Starting the IP Trace Facility and Specifying Which Data to Trace for more information.
  3. Enter ZTTCP TRACE START TAPE to start writing the IP trace table to the real-time tape.

The IP trace facility will automatically write each 4-KB block of the IP trace table to the real-time tape when that 4-KB block becomes full. If the length of the queue to the real-time tape becomes too large, the IP trace facility stops writing the IP trace table to tape until the queue becomes smaller.

When you are ready to create an IPTPRT report, remove the real-time tape so that it can be processed by the IPTPRT utility. See TPF Operations for more information about the ZTTCP TRACE command or removing a real-time tape.