ISO/IEC INTERNATIONAL STANDARD 7498-3 Second edition 1997-04-15 Information technology -- Open Systems Interconnection - Basic Reference Model: Naming and addressing Technologies de I'information --- Interconnexion de systemes ouverts (Osl)---Modele de référencede base:Denomination etadressage E( fso Reference number ISO/IEC 7498-3:1997(E) Copyright Intemational Organization for Standardization d by IHS Not for Resale ISO/IEC 7498-3:1997(E) Contents Page Scope... 1 2 Normative references ... 1 2.1 Identical Recommendations I International Standards 1 2.2 Paired Recommendations [ International Standards equivalent in technical content . 1 2.3 Additional references........ 3 Definitions.. 2 4 Abbreviations.. 4 5 Basic Concepts of Naming .. 5 6 OSI naming and addressing concepts and the correct use of addresses .... 5 6.1 The naming of real open systems... 5 6.2 The naming and addressing of elements of an (N)-layer .. 6 6.3 The correct use of (N)-addresses .. 6 OSI addressing model .. L 7.1 Associations between peer (N)-entities. 7.2 Attachment of (N)-entities to (N)-SAPs.. 7 7.3 (N)-adresses and (N)-.SAPs... 8 7.4 (N)-Directory-Functions and Directory Facilities. 9 8 Addressing information and (N)-services .. 9 8.1 9 8.2 Address parameters. 9 8.3 Called-(N)-address... 10 8.4 Calling-(N)-addres.. 10 8.5 Responding-(N)-address . 11 9 Addressing information and (N)-protocols .. 11 9.1 Introduction.... 11 9.2 Addressing information in (N)-PAI. 11 9.3 Assignment of values to elements of (N)-PAI .. 12 9.4 Network-Addresses and Network-PAI 12 9.5 (N)-Addresses and (N)-PAI above the Network Layer 12 9.6 Obtaining (N)-PAI 13 10 (N)-directory-functions 13 10.1 Introduction. 13 10.2 The initiator (N)-directory-functions .... 14 10.3 The recipient (N)-directory-functions . 15 ISO/IEC1997 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,eiectronic or mechanical, inciuding photocopying and micro- film, without permission in writing from the publisher. ISO/IEC Copyright Office · Case postale 56 . CH-1211 Geneve 20 · Switzerland Printed in Switzerland ii andardizatior No reproduction or networking permited withoutlicense from IHS Not for Resale @ISO/IEC ISO/IEC 7498-3:1997(E) 11 Addressing in specific OSI layers 15 11.1 Application-processes and the Application Layer 15 11.2 Presentation Layer...... 17 11.3 Session Layer.... 18 11.4 Transport Layer 18 11.5 Network Layer .. 19 11.6 Data Link Layer .. 21 11.7 Physical Layer..... 22 12 Naming domains and authorities.. 22 13 Registration procedures for naming within OSI.. 23 14 Directory Facility requirements.. 23 14.1 Introduction..... 23 14.2 The Application Title Directory Facility.... 23 14.3 TheNetwork Address DirectoryFacility... 24 ili andardization No reproduction or networking permited withoutlicense from IHS Not for Resale