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Glossary


address

In IBM Systems Network Architecture (SNA), a 16-bit value that uniquely identifies a subarea and an element-for example, logical unit (LU)-in the network. Each network addressable unit, whether it is an LU, a PU, or an SSCP, has its own address. Network addresses used in Local Area Networks (such as Ethernet or token-ring) may be longer than 16 bits.

AS/400

An IBM midrange computer.

ASCII

American National Standard Code for Information Interchange.

AUTOEXEC.NCF

A file in the root directory that sets up the configuration of NetWare and the Communication Executive.

code page

A number that specifies a standardized code value arrangement of an ASCII or EBCDIC character set (also known as a symbol set). The code values used for certain characters vary from one code page to another. Different code pages are often intended to be used in different countries.

Communication Executive

A set of NLMs that provide communication services to the network. The Communication Executive is the foundation for the communication service modules; it is not a standalone product.

communication service

A service provided by NLMs, such as LAN-to-host communication. For example, the communication service module NetWare for SAA provides communication from PC workstations to hosts and LANs in the SAA environment.

configure

To specify the number or position of settings or devices.

control characters

Characters that send a command to the printer rather than printing the character itself.

CSStatus

A command that brings up the NetWare Communication Services status display, which shows information about the communication services.

dedicated LU

An LU that is reserved for a particular use or a particular user.

default

A value or instruction in effect unless it is explicitly changed.

directory

A grouping of files on a disk. These files are displayed together and may include access to other directories (subdirectories).

EBCDIC

Extended Binary Coded Decimal Interchange Code.

end bracket

An SNA message control flag sent by a host computer to indicate the end of a transaction or job within a session.

host computer

The primary computer in a network or network domain. In SNA, the computer or one of the computers in which the System Services Control Point (SSCP) resides. The host is usually an IBM System/370* mainframe computer or an AS/400 midrange computer.

host link

A physical connection from the NetWare server to the host computer.

Host PU profile

A stored configuration or set of characteristics that defines a communication service and how it behaves in the NetWare for SAA environment. These characteristics include the devices on the network and the connections to those devices. Also known as a host link.

host session

A temporary logical connection established between two network-addressable units; for example, a gateway workstation and a host computer.

HostPrint

An NLM that provides host printer services.

HostPrint Print Device utility (HPDEFW)

A HostPrint utility used to create a database of printer device names and definitions.

HPDEFW

See HostPrint Print Device utility.

IBM 3270 terminal

Any of a series of IBM terminals that includes models 3278, 3279, 3178, and the 3287 host-addressable printer.

IntranetWare for SAA (IWSAA)

A communication service that provides communications between a NetWare LAN and an IBM Systems Application Architecture (SAA) environment.

IWSAA

See IntranetWare for SAA.

local area network (LAN)

Computers linked so that users can share data and peripherals (such as hard disks and printers) and possibly access remote hosts or networks.

LU (logical unit)

A terminal (for example, an IBM 3278), a host-addressable printer, or an application. An LU can communicate with the System Services Control Point (SSCP), with host applications, or with other LUs of the same type (true for LU Types 6.0, 6.1, and 6.2 only).

LU Type 1

Host-addressable printer with SNA character string (SCS) support (for example, an IBM 3287 operating in SCS mode).

LU Type 3

Host-addressable printer operating in IBM 3270 data stream mode.

MS-DOS

Disk Operating System. A single-tasking, single-user, disk-based operating system that controls the allocation and use of such resources as memory, disk space, and peripheral devices.

NetWare

Novell's network operating system.

NetWare Communication Services

A family of products that provide communication services for NetWare. NetWare Communication Services include the Communication Executive.

NetWare for SAA (NWSAA)

A communication service that provides communications between a NetWare LAN and an IBM Systems Application Architecture (SAA) environment.

NetWare Runtime

The fully functional single-user version of NetWare shipped with each NetWare Communication Service.

network

Two or more computers, connected by cable, that use communi-
cations software to exchange information.

NLM (NetWare Loadable Module)

A program that provides communication services for NetWare and can be loaded on a server without affecting current server operations.

NWSAA

See NetWare for SAA.

physical unit (PU)

A node in a Systems Network Architecture (SNA) network that supports one or more logical units (LUs).

print job configuration

Elements of a printer configuration file that contains the names of the NetWare file server and print queue to be used for printing, printing instructions, and the name of the printer to use.

print queue

The name that defines where to direct print jobs on the server.

print services

Modules that provide the ability to print from any appropriate device on the network.

PRINTCON

A NetWare utility used to configure a print job, which specifies the names of the NetWare file server, print queue, and print device to be used for a specific printer session.

printer definition

Elements of a printer configuration file that depend upon the make and model number for a specific printer.

profile

A stored configuration, or a set of characteristics. A profile can be loaded or unloaded and can determine the configuration of a service. See also SNA service profile.

SAA

See Systems Application Architecture.

server

A machine on the network that provides a particular service to the network, such as a communication server, a file (or disk) server, a gateway server, or a print server. Often contains large amounts of storage and many different software application programs that can be run at the same time.

service

Functionality provided by NLMs, such as ability to print or copy files from one node to another.

session

A logical connection between two network-addressable units.

SNA

See Systems Network Architecture.

SNA service profile

A stored configuration or set of characteristics that defines a communication service and how it behaves in the NetWare for SAA environment. These characteristics include the devices on the network and the connections to those devices. Also known as a host link.

STARTUP.NCF file

The NetWare command file that is executed when NetWare is booted. This file must be stored on the startup device.

System Services Control Point (SSCP)

In Systems Network Architecture (SNA), a control point in a host node that provides network services for dependent nodes.

Systems Application Architecture (SAA)

An application architecture used to develop application programs for the IBM Systems Network Architecture (SNA) environment.

Systems Network Architecture (SNA)

A network architecture developed by IBM that is defined in terms of its functions, formats, and protocols. SNA specifies how computer equipment connects and communicates. The SNA model includes the application, presentation, data flow control, transmission control, path control, data link, and physical functional layers.

VTAM

Virtual Telecommunications Access Method.

workstation

A personal computer or terminal device, usually operating within a LAN.



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