Information technology — Open Systems Interconnection — Network Service Definition — Amendment 5

Technologies de l'information — Interconnexion des systèmes ouverts — Définition du service de réseau — Amendement 5

General Information

Status
Withdrawn
Publication Date
02-Nov-1994
Withdrawal Date
02-Nov-1994
Current Stage
9599 - Withdrawal of International Standard
Completion Date
26-Sep-1996
Ref Project

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ISO/IEC 8348:1993/Amd 5:1994
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ISO/IEC
INTERNATIONAL
STANDARD 8348
Second edition
1993-06-1 5
AMENDMENT 5
1994-1 1-01
Information technology - Open Systems
Interconnection - Network Service Definition
AMENDMENT 5: Group Network addressing
Technologies de l'information - Interconnexion de systèmes ouverts -
Définition du service de réseau
AMENDEMENT 5: Adressage de réseau groupe
':., 1
Reference number
ISO/IEC 8348: 1993/Amd.5: 1994(E)

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ISOAEC 8348: 1993/Amd.5: 1994(E)
Foreword
IS0 (the International Organization for Standardization) and IEC (the Inter-
national Electrotechnical Commission) form the specialized system for worldwide
standardization. National bodies that are members of IS0 or IEC participate in the
development of International Standards through technical committees established
by the respective organization to deal with particular fields of technical activity.
IS0 and IEC technical committees collaborate in fields of mutual interest. Other
international organizations, governmental and non-governmental, in liaison with
IS0 and IEC, also take part in the work.
In the field of information technology, IS0 and IEC have established a joint
technical committee, ISO/IEC JTC 1. Draft International Standards adopted by the
joint technical committee are circulated to national bodies for voting. Publication
as an International Standard requires approval by at least 75 % of the national
bodies casting a vote.
This amendment to International Standard ISO/IEC 8348: 1993 was prepared by
Joint Technical Committee ISO/IEC JTC 1, Information technology, Sub-
committee SC 6, Telecommunications and information exchange between systems.
This amendment to ISO/IEC 8348:1993 has not been approved by ITU-T and is
an ISO/IEC amendment only. When approved by ITU-T a second edition of the
amendment will be published conforming to the Rules for presentation of
ISO/IEC/ITU-T common texts.
Amendments 1 to 4 were consolidated into the second edition of ISO/IEC 8348.
I 0 ISO/IEC 1994
All rights reserved. Unless otherwise specified, no part of this publication may be
reproduced or utilized in any form or by any means, electronic or mechanical, including
~
photocopying and microfilm, without permission in writing from the publisher.
ISO/IEC Copyright Office Case postale 56 CH- 121 1 Genève 20 e Switzerland
Printed in Switzerland
I

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0 ISO/IEC
ISODEC 8348: 1993/Amd.5: 1994(E)
Information technology - Open Systems Interconnection -
Network Service Definition
AMENDMENT 5: Group Network addressing
O. Introduction
This Amendment to ISO/IEC 8348: 1993 defines the concept of group Network address. ISO/
IEC 8348: 1993 defines the Network service access point (NSAP) address as an identifier for a
single NSAP, supporting a Network service that is exclusively unicast (i.e., between a single
source NSAP and a single destination NSAP). This Amendment does not change the definition of
the NSAP address, but adds a new type of identifier - the group Network address - that supports a
multicast Network service (i.e., between a single source NSAP, identified by an individual
Network address, and a group of destination NSAPs, identified by a group Network address). The
multicast Network service is itself defined in a separate Amendment to ISO/IEC 8348: 1993.
This Amendment defines group Network addresses by creating a new set of AFI values, one for
each existing AFI value, and a fixed one-to-one mapping between each of the existing AFI values
AFI value. The syntax of a group Network address is identical to the
and a corresponding group
syntax of an individual Network address, except that the value of the AFI in an individual
Network address may be only one of the values already allocated for individual Network
addresses, whereas the value of the AFI in a group Network address may be only one of the
values allocated for group Network addresses by this Amendment. The Am values allocated for
group Network addresses have been chosen in such a way that they do not overlap, in the
preferred encoding defined by ISO/IEC 8348: 1993, with any of the AFI values that have already
been allocated for individual Network addresses.
1. Scope
This Amendment makes no changes to clause 1 of ISOIIEC 8348:1993.
2. References
This Amendment makes no changes to clause 2 of ISOIIEC 8348:1993.
1

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O ISO/IEC
ISOAEC 8348: 1993/Amd.5: 1994(E)
3. Definitions
Add two definitions as 3.4.X and 3.4 Y (afer the present 3.4.10) and a Note within clause 3 of
ISOIIEC 8348:1993 with the following text:
3.4.x group Network address: an address that identifies a set of zero or more Network
service access points; these may belong to multiple Network entities, in different end systems.
3.4.Y individual Network address: an address that identifies a single NSAP.
Note: - Where the distinction between a group Network address and an individual Network
address is not important, the term NSAP address is used.
4. Abbreviations
This Amendment makes no changes to clause 4 of ISOIIEC 8348:1993.
5. Conventions
This Amendment makes no changes to clause 5 of ISOIIEC 8348:1993.
6. Overview and general characteristics
Change point (e) of clause 6 from “(NSAP addressing)” to:
(NSAP addressing and group Network addressing)
7.
Types and classes of Network Service
This Amendment makes no changes to clause 7 of ISOIIEC 8348:1993.
PART 2 - DEFINITION OF CONNECTION-MODE SERVICE
This Amendment makes no changes to clauses 8 through 14 of ISOIIEC 8348:1993.
PART 3 - DEFINITION OF CONNECTIONLESS-MODE SERVICE
This Amendment makes no changes to clauses 15 through 19 of ISOIIEC 8348:1993.
A. AnnexA.
A.l General
Add a paragraph to the end of clause A.1:
In addition this annex defines the abstract syntax and semantics of the group Network address.
The group Network address is used to support multicast services and is the address that may
appear in the primitives of the connection-mode Network service as the called address parameter,
and in the primitives of the connectionless-mode network service as the destination address
parameter.

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ISOAEC 8348: 1993/Amd.5: 1994(E)
O ISO/IEC
A.2 Scope
This
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