4851903 0649406 708 INTERNATIONAL ISO/IEC STANDARD 8473-2 First edition 1996-03-15 Information technolgy -- Protocol for providing the connectionless-mode network service - Part 2: Provision of the underlying service by an ISO/lEC 8802 subnetwork réseau en mode sans connexion - Partie 2: Fourniture du service sous-jacent par un sous-réseau SO/CE/8802 IEC ISo Reference number ISO/IEC 8473-2:1996(E) Copyright International Organization for Standardization with ISO without license from IHS Not for Resale 4851903 0649407 644 ISO/IEC 8473-2:1996(E) Contents Foreword .ili Introduction Scope. 2 Normative references. 3 Definitions ... 3.1 Reference model definitions. 3.2 Network layer architecture definitions. 3.3 Network layer addressing definitions. 3.4 Local area network definitions..... 4 Abbreviations 5 Subnetwork dependent convergence function. 5.1 5.2 Subnetwork user data .... 5.3 Subnetwork dependent convergence functions used with ISO/IEC 8802 subnetworks AnnexA-- .PICS proforma ... ISO/IEC1996 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, including photocopying and microfilm, without permission in writing from thepublisher. ISO/IEC Copyright Office · Case postale 56 - CH-1211 Geneve 20 - Switzerland Printed in Switzerland Copyright International Organization for Standardization I without license from IHs Not for Resale 4851903 0649408 580 @ ISO/IEC ISO/IEC 8473-2:1996(E) Foreword ISO (theInternationalOrganizationfor Standardization)and IEC(the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees establishedbytherespectiveorganizationtodeal withparticular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO 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. International Standard ISO/IEC 8473-2 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC6, Telecommunicationsandinformationexchangebetweensystems. ISO/IEC 8473 consists of the following parts, under the general title Information technology -- Protocol for providing the connectionless-mode network service: Part l: Protocol specification Part 2: Provision of the underlying service by an ISO/lEC 8802 subnetwork Part 3: Provision of the underlying service by an X.25 subnetwork Part 4: Provision of the underlying service by a subnetwork that provides the OSI data link service Part 5: Provision of the underlying service for operation over ISDN circuit-switchedB-channel Annex A forms an integral part of this part of ISO/IEC 8473. ii for Standardizatic vided by IHS under lin