ISO/IEC 10028:1993 PDF

Information technology — Telecommunications and information exchange between systems — Definition of the relaying functions of a Network layer intermediate system

First page of standard ISO/IEC 10028:1993

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Title (English):

ISO/IEC 10028:1993

Information technology — Telecommunications and information exchange between systems — Definition of the relaying functions of a Network layer intermediate system

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 33
Publication date:: October 14, 1993
Edition:: ISO/IEC IS 10028 edition 1 version 1
ICS:: 35.100.30

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Description (English):

Is intended for use in guiding the design and application of real interworking units and real subnetworks (e.g. local area networks and private packet switched networks) which are to support the OSI network service. As the principal means for expressing the definition, the concept of the network internal layer service is used. The definition includes the invocation of network routing functions as a necessary element of the network relaying functions. The definition of network relaying functions applies both to a subnetwork supporting all elements of the network service and to a network relay system interconnecting two subnetworks.

Technical details

Technical committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
SKU: ISO/IEC 10028:1993

Abstract

Overview

ISO/IEC 10028:1993 defines the abstract relaying functions of a Network layer intermediate system to support the OSI connection-mode Network Service. The standard introduces the Network Internal Layer Service (NILS) as the primary means to describe internal Network layer information flows inside intermediate systems (real subnetworks or network relay systems). It is deliberately abstract - independent of specific protocols or subnetwork technologies - and focuses on how relaying and the invocation of routing functions must behave to support end-to-end OSI Network Service operations.

Key Topics

Network Internal Layer Service (NILS): An internal-layer abstraction that models primitives, parameters and elementary sequences used inside intermediate systems to represent Network Service behavior.
Relaying (N-relaying): The functions that relate two instances of NILS (sides A and B) and move Network Service information through an intermediate system.
Routing (N-routing): The routing function invoked by relaying; the standard defines the interface to routing but does not mandate routing algorithm implementations.
Primitives and sequences: Definition of NILS primitives and named elementary sequences (e.g., ESTAB, DT, ABORT, REQ, RELF) and their parameters to model connection establishment, data transfer, flow control, reset and release behaviors.
Mappings and interfaces: How NILS maps to protocol combinations on each side of an intermediate system (N-protocols, NSAP addresses), and the role of harmonization approaches when interconnecting heterogeneous subnetworks.
Scope limits: Harmonization protocol mechanisms and concrete protocol realizations are explicitly out of scope; the standard provides abstract guidance rather than conformance test criteria.

Applications

ISO/IEC 10028:1993 is intended for:

Network architects and designers of local area networks (LANs), private packet-switched networks, and interworking units that must support OSI Network Service relaying.
Standards developers creating Network layer protocol specifications and mappings to ensure relaying requirements are incorporated.
Vendors implementing network relay systems or subnetwork interfaces that need a reference model for internal Network layer behavior. Practical uses include designing internal service interfaces, specifying NPDU-to-NILS mappings, and guiding the integration of routing with relaying functions in multi-subnetwork environments.

Related Standards

ISO/IEC 7498 (OSI Reference Model)
ISO/IEC 8348 / ISO 8348 (Network Service definition)
ISO 8648 (Internal organization of the Network layer)
ISO/TR 8509 (Service conventions)
CCITT/ITU-T Recommendations X.200 / X.213

This standard is primarily conceptual and descriptive - useful as a blueprint for developers and standards authors working with OSI Network layer relaying and intermediate system design.

Related standards

Standards mentioned in the description

Abstract

Overview

Key Topics

Network Internal Layer Service (NILS): An internal-layer abstraction that models primitives, parameters and elementary sequences used inside intermediate systems to represent Network Service behavior.
Relaying (N-relaying): The functions that relate two instances of NILS (sides A and B) and move Network Service information through an intermediate system.
Routing (N-routing): The routing function invoked by relaying; the standard defines the interface to routing but does not mandate routing algorithm implementations.
Primitives and sequences: Definition of NILS primitives and named elementary sequences (e.g., ESTAB, DT, ABORT, REQ, RELF) and their parameters to model connection establishment, data transfer, flow control, reset and release behaviors.
Mappings and interfaces: How NILS maps to protocol combinations on each side of an intermediate system (N-protocols, NSAP addresses), and the role of harmonization approaches when interconnecting heterogeneous subnetworks.
Scope limits: Harmonization protocol mechanisms and concrete protocol realizations are explicitly out of scope; the standard provides abstract guidance rather than conformance test criteria.

Applications

ISO/IEC 10028:1993 is intended for:

Network architects and designers of local area networks (LANs), private packet-switched networks, and interworking units that must support OSI Network Service relaying.
Standards developers creating Network layer protocol specifications and mappings to ensure relaying requirements are incorporated.
Vendors implementing network relay systems or subnetwork interfaces that need a reference model for internal Network layer behavior. Practical uses include designing internal service interfaces, specifying NPDU-to-NILS mappings, and guiding the integration of routing with relaying functions in multi-subnetwork environments.

Related Standards

ISO/IEC 7498 (OSI Reference Model)
ISO/IEC 8348 / ISO 8348 (Network Service definition)
ISO 8648 (Internal organization of the Network layer)
ISO/TR 8509 (Service conventions)
CCITT/ITU-T Recommendations X.200 / X.213

This standard is primarily conceptual and descriptive - useful as a blueprint for developers and standards authors working with OSI Network layer relaying and intermediate system design.

ISO/IEC 10028:1993 PDF

Technical details

Abstract

Overview

Key Topics

Applications

Related Standards

Related standards

Abstract

Overview

Key Topics

Applications

Related Standards

Related standards

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