Transaction Adapter for CICS User's Guide > Running the Adapter Using TCP/IP Communication > MVS OS/390 TCP/IP Communication

MVS OS/390 TCP/IP Communication

Topics:

The following topic describes the requirements to ensure TCP/IP communication to the CICS region. You can use the following information when consulting with VTAM and CICS administrators.

TCP/IP Requirements

The requirements for TCP/IP communication to the CICS region are:

  • TCP must be installed on z/OS.
  • The CICS system initialization must specify TCPIP=YES.

    The default is NO.

  • You must define a TCPIPSERVICE resource definition for the CICS region.

    You must specify PROTOCOL(ECI) and the ATTACHSEC(<value>). The ATTACHSEC(<value>) should match what you configure for the adapter connection parameters.

Note: The default transaction is CIEP. This can be changed. You may want to set STATUS(OPEN) so that the transaction is started when installed. The default port is 1435. You can change this using the PORT parameter.

For the transaction to run, the TCPIPSERVICE must be installed and started. This can be accomplished automatically (by ensuring that the TCPIPSERVICE is defined in a group that is in a CICS start up list) or manually from CEDA.