Glossary

See APRI

See ARPA

The American National Standards Institute that publishes standards for use by national industries.

A set of functions enabling an application program to interact with and control network operations and resources.

See API

An application program interface to the OSI presentation.

The part of a command line that identifies what (file, directory, etc.) is to be acted upon.

The Advanced Research Projects Agency. A U.S. government research agency that was instrumental in developing and using the original ARPA services on the ARPANET.

The principal network segment to which all nodes are connected, or to which other segments are connected.

This subset is used with basic X.400 application and Session version 1.

See BAS

See BCS

See BSS

This subset is used with basic FTAM applications and Session version 2.

To start up your system, loading it into the computer memory.

A device that connects different LANs.

This subset is used with advanced user application and advanced FTAM usage.

A mechanism to avoid sending data to a faulty device or portion of the network.

Consultative Committee for International Telegraphy and Telephony. An international organization of communication carriers.

Indicates the LAN subnetwork information.

Connectionless-oriented network services.

A word or phrase that you type at the system prompt to carry out an action when you press the ENTER key.

The interface for development of network management applications.

The arrangement of a computer system or network as defined by the nature, number, and the chief characteristics of its functional units. More specifically, the term configuration may refer to a hardware configuration or a software configuration.

To set up your computer system so that the computer and all peripheral devices can work together. If the computer is part of a network, this includes loading the appropriate software and establishing the necessary connections.

See CONS

See CLNS

Connection-oriented network services.

See CCITT

Closed user group. An X.25 user facility that allows a predetermined group of users to contact and be contacted by members of the group alone.

A software process that runs continuously and provides services on request.

A computer system in which computing, storage, and other resources are dispersed throughout several or many locations.

A 10 Mb/s LAN, developed by Digital Equipment Corporation, Intel, and Xerox Corporation, upon which the IEEE 802.3 network is based.

A specification for a fiber-optic ring network featuring a link speed of 100 Mb/s and fault tolerant capabilities.

See FDDI

See FTP

See FTAM

Describes the logical, defined set of files on an update or installation tape.

Provides the capability to manipulate data files locally and at remote nodes.

The file transfer protocol that is traditionally used in ARPA networks. The ftp command uses the FTP protocol.

A node that connects two or more networks together and routes packets between those networks.

Government OSI Profile. An OSI-based network protocol used by governments (for example, the United States and United Kingdom).

A network composed of dissimilar host computers, such as those of different manufacturers. See homogeneous network for contrast.

A network composed of similar host computers, such as those of one model or one manufacturer. See heterogeneous network for contrast.

The Electronics Engineers. A national association, whose activities include publishing standards applicable to various electronic technologies.

A 10-megabit- per-second LAN, described by the ANSI/IEEE 802.3 Standard for Local Area Networks, that uses a CSMA/CD network access method.

Interoperability procedures used to verify that nodes can communicate over the network.

The International Standards Organization that created a network model identifying the seven commonly- used protocol levels for networking.

The part of the HP-UX operating system that is an executable piece of code responsible for managing the computer's resources.

A data communications system that allows a number of independent devices to communicate with each other.

The ANSI FDDI standard that provides a common protocol between the MAC function in the data link layer and the network layer.

See LAN

The network to which a node is directly attached.

Some initial set of digits of the NSAP that form a prefix for all systems reachable over this subnetwork.

The ANSI FDDI standard that defines the data link layer function responsible for the scheduling, routing and delivery of frames on and off the FDDI ring.

See MMS

See MAC

Provides the capability to control and coordinate programmatic factory floor devices involved in manufacturing.

See NSAP

An individual responsible for network administration, for example, organizing network domains and issuing node names.

The set of principles, including the organization of functions and the description of data formats and procedures, that governs the design and implementation of a user- application network.

Any point in a network where services are provided or communications channels are interconnected. A node could be a workstation or a server processor.

A unique value that defines a system's address for use when establishing network connections among various systems.

See OSI

Open System Interconnection reference model defined by the International Standards Organization (ISO). It establishes a data communication architectural model for networks.

HP's term for the OSI transport services.

A sequence of binary digits that is transmitted as a unit in a computer network. A packet usually contains control information plus data.

A unique identification number assigned to all processes by the operating system.

A software access point for data entry or exit to a network controller.

See PID

A specification for transferring information between computers on a network.

Duplication of service. Networks can provide redundancy to increase the probability that communications can continue despite various failures.

Not directly connected or processed at another location.

Allows OSI communication over TCP/IP connections as described in RFC1006 and RFC1277.

A node that is able to transmit packets between similar networks. A node that transmits packets between dissimilar networks is called a gateway.

Service access points between network layers.

A station in an FDDI network that connects to only one of the two FDDI network rings. An SAS must attach to the network through a concentrator.

A sequence of octets (bytes) used to identify a SAP; referred to as p- selector, s-selector, and t-selector to identify the OSI layer association.

See SAP

An application program interface to the OSI session layer.

See SAS

The ANSI FDDI standard which manages connections with the ring as well as station and ring configuration.

See SMT

A group of computers that are a part of a larger network and whose IP address includes a subnetwork number.

The person who oversees system maintenance and computer operation.

The physical and logical geometry governing placement of nodes in a computer network. Also, the layout of the transmission medium for a network.

Defines the interface between a computer and a public data network where the access to the network is made over synchronous digital lines.

Defines the interface between a computer and a packet switching network.

The interface for electronic messaging applications over a network.

A distributed directory interface allowing different vendors to store and access information on different systems.

See XTI

An application program interface to the OSI transport layer.