Before users on the system can use the Host Connection Program (HCON) to communicate with a System/370 mainframe host, the host must meet certain configuration requirements. Different systems have differing requirements, depending on the hardware and operating system installed. However, the Virtual Telecommunications Access Method (VTAM) configuration necessary for HCON is the same for all system types. To set up HCON-related VTAM Network Control Program (VTAM/NCP) information on the mainframe host, you need to:
See "VTAM/NCP Node Definition Examples" for descriptions of node tables for specific connection types.
VTAM release 3.2 or later is recommended when using HCON. Because the host definitions needed to support different links and protocols vary, consult the VTAM publications for details of VTAM and NCP generation descriptions.
After you have configured the host for use with HCON, provide each HCON user with an appropriate logon ID on the host computer. Before writing programs with the HCON Application Programming Interface (API) to communicate with a host system, you must install the host API on that system.
The host definitions for HCON can be classified into these categories:
These macros are used in VTAM and NCP connection definitions for connecting to local systems:
HCON supports the following host control units. Each control unit has different configuration requirements.
Following are the 3274 controller customization requirements (for 3274 Configuration Support D) for a local system running the HCON 3278/79 emulator, the 3270 file transfer program, or the application programming interface (API):
The 5088 controller address is normally set up during the installation process. Refer to the 5088 Models 1, 2, and 1R Graphics Controller Maintenance Information manual for details.
The setup parameter of the HIA adapter on the local system and the 5088 control unit must match. Use SMIT 5085 from the command line to view or change the HIA setup parameters. For host channel and terminal type definition, refer to the System Planning and Installation Guide for 6098 Graphics System.