Bull DPX/20 Guía de instalación descargar pdf (Pagina 168)

Host Connection Program Guide and Reference

3-66

Configuring Hosts for HCON

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:

• Understand host requirements.

• Configure a host terminal control unit for HCON.

• Set Up the host LOGMODE table.

See “VTAM/NCP Node Definition Examples” on page 3-70 for descriptions of node tables

for specific connection types.

Host Requirements

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:

• Channel attachment:

– DFT using a 3174/3274 or equivalent

• Remote attachment:

– DFT using a 3174/3274 or equivalent

• Standalone:

– Using a Node T2.1 device

– Using SDLC (switched or leased line)

– Using a Token-Ring network

– Using an X.25 wide area network.

These macros are used in VTAM and NCP connection definitions for connecting to local

systems:

GROUP Defines a group of communication lines attached to the NCP or VTAM. All

of the lines in each physical line group have common physical attributes.

Many parameters from the LINE, PU and LU macros may be specified in

the GROUP macro for ease of coding and readability. This grouping

eliminates the need to include common parameters in each subsequent

macro and allows overrides when appropriate.

LINE Supplies specific characteristics of the communication link. Proper values

should be determined by checking with the common carrier and modem

supplier.

PU Defines the characteristics of the node’s physical unit.

LU Defines the characteristics of a logical unit (LU). A physical unit type 2.1

node, such as HCON, can support multiple LUs. An LU provides the

interface to an SNA network for terminals and printer support to a host

1 2 ... 163 164 165 166 167 168 169 170 171 172 173 ... 333 334

Comentarios a estos manuales

Sin comentarios

Bull DPX/20 Guía de instalación Pagina 168

Comentarios a estos manuales

Relacionado con productos y manuales para Software Bull DPX/20