Supported TCP/IP Transport Providers

This section describes the TCP/IP transport providers supported:

  • Under z/OS, IBM's eNetwork Communications Server is supported.

  • Under z/VSE, Connectivity Systems TCP/IP stack and API or IBM TCP/IP for z/VSE (software provided by Connectivity Systems) only are supported.

  • Under BS2000/OSD, Sockets, a component of Open Net Server, is supported.

This document covers the following topics:


IBM TCP/IP Communication Subsystem and API

In z/OS environments, OpenEdition sockets (API=OES) or the high performance native sockets interface (API=HPS) are used to communicate with the IBM TCP/IP address space. A valid OpenEdition security context, referred to as an OMVS segment, must be defined for Entire Net-Work. For more information, see the IBM document z/OS OpenEdition Planning Guide.

If the OMVS segment is not properly defined, TCP/IP driver initialization will fail with error 156. The Entire Net-Work error message received is NETP600I if API=HPS or NETP700I if API=OES.

Connectivity Systems TCP/IP Stack and API

In z/VSE environments, the native Sockets interface is used to communicate with the TCP/IP partition. To use the Connectivity Systems TCP/IP stack and API, users must ensure that the Adabas program ADARUN, which is used to invoke Entire Net-Work, has been linked with ADMODE (31). This is the distributed default upon release for both the Adabas library and the Adabas limited library.

Sockets Subsystem

In BS2000/OSD environments, the Sockets subsystem is used to communicate with BCAM:

  • BS2000/OSD Versions 5 and above are supported.

  • Sockets subsystem versions 2.0 and above are supported. This version number can be determined using the SHOW-SUBSYSTEM-STATUS SUBSYSTEM-NAME=SOCKETS command.