Configuring PROFILE.TCPIP

During TCP/IP address space initialization, a configuration profile data set (PROFILE.TCPIP) is read that contains system operation and configuration parameters. A sample data set, SEZAINST(SAMPPROF), can be copied and modified for use as your default configuration profile.

If you are not familiar with the search order for this data set, see PROFILE.TCPIP search order for information about understanding data set search orders. See z/OS Communications Server: IP Configuration Reference for the complete statement syntax and descriptions of the configuration statements.

For ease of management when configuring a complex environment, you can use one of the following PROFILE.TCPIP data set features:

Group related statements into separate files and use the INCLUDE statement in PROFILE.TCPIP to include them in your configuration.
Use MVS™ system symbols (such as &SYSCLONE, &SYSNAME, and &SYSPLEX). Because TCP/IP translates these symbols as it reads this file, this feature reduces the number of PROFILE.TCPIP data sets that must be maintained in a multi-TCP/IP environment.

Note: For detailed information about symbols and how to define them, see z/OS MVS Initialization and Tuning Reference.

The PROFILE data set contains the following major groups of configuration parameters:

TCP/IP operating characteristics
TCP/IP physical characteristics
TCP/IP reserved port number definitions (application configuration)
TCP/IP routing definitions
TCP/IP diagnostic data statements

This information explains the first three areas of configuration. For routing configuration information, see Routing. For information about configuring diagnostic statements, see z/OS Communications Server: IP Diagnosis Guide.