Configuring and Managing Host-Based X.25 Links - Edition 5 (36939-90054)

18 Chapter1

Introduction

Host-Based X.25 Conﬁguration Concepts

Host-based X.25 connections are conﬁgured using the Node

Management Conﬁguration Manager (NMMGR). NMMGR allows

you to completely conﬁgure both PAD support and system-to-system

X.25 connections. For more information on NMMGR and its operation,

see Using the Node Management Services (NMS) Utilities manual.

DTS Conﬁguration Branch

NMMGR takes you down speciﬁc conﬁguration “branches” to allow you

to enter conﬁguration values required by various subsystems or

products. The DTS branch allows you to conﬁgure the

Datacommunications And Terminal Subsystem (DTS), which

deﬁnes the physical connections and conﬁguration parameters for the

computer, its DTCs, and all DTC-connected devices.

If you are conﬁguring only PAD support, you need only traverse the

DTS branch of NMMGR. You will use this branch to conﬁgure both

locally connected devices and PAD connected devices. To access this

branch of NMMGR, from the Main screen, answer “N” (no) to the

question “Are you using OpenView DTC Manager?” and “Y” (yes) to the

question “Do you have X.25 system-to-system or PAD connections?”.

Press the

[Save Data] key, then press the [DTS] function key.

Using the DTS conﬁguration branch, you conﬁgure link information for

the DTCs connected to the system. For each DTC, you specify the card

types the DTC contains, along with logging class and PAD access

information if one of the cards is a DTC/X.25 Network Access card. For

each individual card, you conﬁgure device connection parameters

pertinent to the card’s type.

For each DTC/X.25 Network Access card you conﬁgure, you also specify

X.25 level 1, level 2, and level 3 parameters according to your X.25

network subscription. You may also elect to conﬁgure security for PAD

access.

Complete step-by-step procedures for conﬁguring the DTS branch are

provided in Chapter 3, “Conﬁguring DTCs Step-by-Step,” of this

manual.

NS Conﬁguration Branch

Connections for system-to-system require that you traverse an NS

conﬁguration branch to conﬁgure X.25 iX System Access. You reach this

branch by pressing the

[NS] function key at the Main NMMGR screen.

Step-by-step procedures for X.25 iX System Access conﬁguration are in

Chapter 6, “Conﬁguring X.25 Links Step-by-Step,” of this manual.