BS ISO 11783-4:2011 BSI Standards Publication Tractors and machinery for agriculture and forestry - Serial control and communications data network Part 4: Network layer bsi. ..making excellence a habit. BSISO11783-4:2011 BRITISHSTANDARD National foreword ThisBritishStandardistheUKimplementationofISO11783-4:2011. The UK participation in its preparation was entrusted to Technical Committee AGE/6, Agricultural tractors and forestry machinery. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @BSI 2011 ISBN9780580663468 ICS 35.240.99; 65.060.01 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2011. Amendments issued since publication Date Text affected BS ISO 11783-4:2011 ISO INTERNATIONAL STANDARD 11783-4 Second edition 2011-12-01 Tractors and machinery for agriculture andforestry Serial control and communications data network Part 4: Network layer Tracteurs et materiels agricoles et forestiers Reseaux de commande et de communication de donnees en série Partie 4: Couche réseau Reference number ISO 11783-4:2011(E) ISO @ISO2011 BS ISO 11783-4:2011 ISO 11783-4:2011(E) COPYRIGHTPROTECTEDDOCUMENT ISO2011 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 either Iso at the address below or IsO's member body in the country of the requester. ISO copyright office Casepostale 56 .CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ISo 2011 Allrights reserved BSISO11783-4:2011 ISO 11783-4:2011(E) Contents Page Foreword .iv Introduction. 1 Scope 2 Normativereferences 3 Terms and definitions. 4 Description.... 4.1 Role of the network interconnection unit (NIU) 4.2 Role of the network layer.... 5 Requirements.... 5.1 Network interconnection unit (NIU) 5.2 Network topology .... 5.3 Network addressing 6 Network interconnectionunitfunctions 6.1 Forwarding. 6.2 Filtering. 6.3 Address translation.... .8 6.4 Message repackaging 6.5 Network message.. 6.6 Database management. 10 6.7 Network topology information 14 6.8 .16 Network interconnection unit parametrics.. 6.9 Forwarding destination-specific messages by establishing a connection. 22 7 Types of network interconnection units .. 7.1 Repeater. 29 7.2 Bridge 29 7.3 Router. .30 7.4 Gateway. 30 7.5 TractorECu Bibliography. @ ISO 2011- All rights reserved ili BSISO11783-4:2011 ISO 11783-4:2011(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO member bodies)._The work of preparing International Standards is normally carried out through iSO International Electrotechnical Commission (IEC)on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEc Directives, Part 2 adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the memberbodies casting a vote. forestry, Subcommittee SC 19, Agricultural electronics. This second edition cancels and replaces the first edition (IsO 11783-4:2001), which has been technically revised. forestry Serial control and communications data network: Part 1: General standardformobile data communication Part 2: Physical layer Part 3: Data link layer Part 4: Network layer Part 5: Network management Part 6: Virtual terminal Part 7: Implement messages application layer Part 8: Power train messages Part 9: Tractor ECU Part 11: Mob