Page 1¶

ND SNA GATEWAYS¶

ND 108860/ND 108640

graph TD
    A(IBM host)
    B(SNA Controller) -->|DSOS/DNCS Connections (X.25 or WNA)| C(ND-100)
    subgraph SNA Gateway (SDLC)
        A
        B
    end

    C -->|LU type 1| D("ND SNA RJE\nRemote Job Entry")
    B -->|LU type 2| E("ND SNA 3270\nProgram Access")
    C -->|LU type 1, 2, 3| F("ND SNA 3270\nTerm. Emulator")
    D -->|Job Output| G
    G[Job Input (queue)]

ND Norsk Data

[Logo: ND Norsk Data]

Page 2¶

ND SNA GATEWAYS¶

Introduction¶

The ND SNA Controllers, single line or multiline, allow an ND-100 with locally attached devices to connect to an IBM SNA network.

ND 108660 SNA Gateway Controller Single Line¶

The Single Line controller runs one communication line. The product emulates the SNA PU type 2 secondary, and consists of the following hardware and software:

ND 108670 PIOC with 512 Kbyte.
ND 210569 PIOC Basic Software.
ND 210471 SNA Gateway Single Line.

Features¶

Supports 4 different LU types (0,1,2,3)
Supports 65 LUs
Supports IBM maintenance requests issued by NCCF, NPDA etc.
Logging facility
Configuration facility
Supports COSMOS

Product Description¶

The ND SNA Gateway Module includes the ND SNA Software which covers the data-link control, the path control, the transmission control and the data-flow control of the SNA architecture. As can be seen from figure 1, the SNA Basic Software is implemented in the PIOC (ND Programmable Input/Output Controller). This relieves the ND-100 of much of the communication protocol handling. The PIOC is built around a Motorola 68000 processor with 512 Kbyte RAM. The communication lines on the PIOC use RS232 C (V.24) interface.

The application in the ND-100 may be a background program (SNA 3274 emulation or a customer-written application), or a real-time program (Remote Job Entry). Application programs may be distributed on different ND computers using the COSMOS network, giving all users access to all applications from any computer in the network.

Network Management¶

The SNA Gateway Supervisor that is part of the Gateway Module, is a menu-oriented application. The program performs such functions as starting and stopping the links, monitoring and configuration. Among the monitor functions are:

Defining a configuration,
Indicating configuration status,
Getting the LU status,
Checking the performance of the Gateway,
Indicating the quality of the line and
Getting DLC statistics.

The configurator functions are:

Allocating applications to dedicated LUs.
Giving passwords to each LU.

Abbreviations¶

Abbreviation	Meaning
NCCF	Network Control Communication Facilities
NPDA	Network Problem Determination Application
SNA	Systems Network Architecture
DLC	Data Link Control
PU	Physical Unit
LU	Logical Unit
RJE	Remote Job Entry
PIOC	Programmable Input/Output Controller
XMSG	Intersystem communication system

Requirements¶

ND-100 Computer.
SINTRAN III VSE/VSX version I or later
XMSG Single System (Included in SINTRAN)
XMSG Inter System (Included in COSMOS Basic Module)

    +----------------+    +----------------------+                                  
    |    PIOC        |    |       ND-100         |                                  
    +----------------+    +----------------------+                                  
         |                   |                                                    
    +----------------+    +---------------------+                                  
    |Terminal Emulation|    |  Program Access   |                                  
    +----------------+    +---------------------+                                  
         |                   |                                                    
    +----------------+         +------------------+                              
    |Remote Job Entry|         |  DISOSS BRIDGE   |                              
    +----------------+         +------------------+                              
         |                   |                                                    
    +----------------+    +--------------------+                                 
    |Program Access  |    | Remote Terminal Server|                              
    +----------------+    +--------------------+                                 
         |                   |                                                    
    +--------------------+                                                 
    |    Local Applications|                                                 
    +--------------------+                                                 

    +--------------------------------------------------+                     
    |                     COSMOS                       |                     
    +--------------------------------------------------+

Page 3¶

ND SNA GATEWAYS¶

ND 108640 SNA Controller Multiline¶

Introduction¶

The Multiline controller, ND 108640, runs two communication lines simultaneously. Up to 33 LUs per line may be simulated, otherwise the functionality is the same as for the Single Line Controller. The product consist of:

ND 108670 PIOC with 512 Kbyte.
ND 210569 PIOC Basic Software.
ND 210616 SNA Gateway Multiline.

Features¶

Increased capacity and reliability with two lines to one mainframe.
Access to two different mainframes.
33 LUs available per line.
The mainframe/link is selectable from the application.

Requirements¶

ND-100 Computer
SINTRAN III VSE/VSX K version
XMSG K version


	ND 210373

Documentation¶

Document	Code
SNA 3270 Emulator Operator Guide	ND-30.038 EN
SNA Supervisor Installation and Operation Guide	ND-30.054 EN
SNA 3270 Program Access Programmer Guide	ND-60.104 EN
SNA RJE Operator Guide	ND-30.058 EN

UPGRADING SINGLE LINE TO MULTILINE¶

Upgrading to multiline capability is done by replacing ND 210741 SNA Gateway - Single Line software with ND 210616 SNA Gateway - Multiline software.