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DirectConnect for DB2/MVS Connectivity Guide

Chapter 3: Configuring the MVS Mainframe for a TCP/IP Environment

Chapter 3

This chapter contains information about configuring the mainframe connection in a TCP/IP environment. This chapter contains these sections:

• Modifying MVS
• Configuring TCP/IP

Modifying MVS

You must modify the MVS SYS1.PARMLIB partitioned dataset to configure the mainframe for the TCP/IP environment. For example, you need to authorize TCP/IP dataset libraries and update approximate members in those libraries when you install TCP/IP. After your modifications are complete, IPL the MVS system using CLPA (Create Link Pack Area).

See Also

• IBM TCP/IP for MVS: Planning and Customization
• IBM SPL: Application Development Guide: Authorized Assembler Language Program

Configuring TCP/IP

You must configure TCP/IP to allow Enterprise CONNECT products using TCP/IP to identify and communicate with DirectCONNECT for DB2/MVS using the CICS TCP/IP Sockets Interface.

[permil] To configure TCP/IP:

1. In the TCP/IP profile dataset, define the port in the MVS TCP/IP configuration profile port definition for each CICS region in use.

   For example, to define the regions CICSPROD, CICSDEV, and CICSQA:

   PORT
   .
   .
   .
   3001 TCP CICSPROD NOAUTOLOG ; CICS SOCKET
   3002 TCP CICSDEV NOAUTOLOG ; CICS SOCKET
   3003 TCP CICSQA NOAUTOLOG ; CICS SOCKET

2. Install and configure the CICS TCP/IP Listener transaction (CSKL) in the CICS region, and then verify that you can bring it up using the CSKE transaction.

   Note: When using the CSKE transaction, specify TCPIPUSERID as the name of the TCP/IP address space, and PORT as the port number of your CICS region, which are required.

3. Configure TCP/IP for MVS so the server on which DirectCONNECT for DB2/MVS is installed can open a socket to the CICS region.

4. Have the DirectCONNECT administrator verify connectivity as follows:
   • To test connectivity between the server and TCP/IP for MVS, use the standard TCP/IP ping command.
   • To test connectivity between the server and CICS, use the cicsping utility (see Chapter 8, "Testing Connectivity in a TCP/IP Environment").

See Also

• IBM TCP/IP for MVS: Sockets Interface Guide and Reference for details on the TCP/IP Socket Interface