ISO INTERNATIONAL STANDARD 9314-2 First edition 1989-05-01 Information processing systems - Fibre Distributed Data Interface (FDDI) - Part 2 : Token Ring Media Access Control (MAC) Systemes de traitement de I'information - Interface de donnees distribuees sur fibre(FDDI)- Partie 2 : Mécanisme d'acces au support de I'anneau a jeton (MAC) Reference number ISO 9314-2 : 1989 (E) ISO 9314-2 : 1989 (E) Contents Page Foreword iv Introduction 1 Scope. 2 Normative references . 3 Definitions 2 4 Conventions and abbreviations. 4.1 Conventions 4 4.2 Abbreviations. 5 6 General description . 6 6 Services. 6.1 MAC-to-LLC services . 6.2 PHY-to-MAC services 11 6.3 MAC-to-SMT services 13 7 Facilities 21 7.1 Symbo! set. 21 7.2 Protocol Data Units 23 7.3 Fields 7.4 Timers 31 7.5 Frame counts 34 ?ISO1989 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means,electronic ormechanical, including photocopying and microfilm, without permission in writing from the publisher. InternationalOrganizationforStandardization Case postale 56 . CH-1211 Geneve 20 . Switzerland Printed in Switzerland i ISO 9314-2 : 1989 (E) 8 Operation 35 8.1 Overview .35 8.2 Structure 40 8.3 Receiver 41 8.4 Transmitter 48 Tables Table 1 Interpretation of FC field 43 Figures Figure 1 Token ring configuration example .6 Figure 2 MAc receiver state diagram 57 Figure 3 MAC transmitter state diagram 59 Annexes Annex A Addressing hierarchical structuring for locaily-administered addresses. 61 A.1 General structure. 61 A.2 Group addressing modes . 62 Annex B Frame Check Sequence. 63 B.1 Description .63 B.2 Generation of the FCs 64 B.3 Checking the FCS 64 B.4 implementation. 65 B.5 Related standards. 65 Figure B.1 Fcs implementation example 66 ii ISO 9314-2 : 1989 (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 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mentai and non-governmental, in liaison with Iso, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISo Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 9314-2 was prepared by Technical Committee ISO/TC 97, Information processing systems. ISO 9314 consists of the following parts, under the general title Information processing systems--FibreDistributedData Interface (FDDI) Part 1:Token Ring Physical LayerProtocol (PHY) Part 2: Token Ring Media Access Control (MAC) Part 3: Token Ring Physical Layer, MediumDependent (PMD) iv 9314-2 : 1989 (E) Iso Introduction This part of Iso 9314 on the FDDI media access control is protocol is designed to be effective at 1oo Mbit/s using a Token ring architecture andfibre optics as thetransmission medium over distances of several kilometres in extent. V 9314-2 : 1989 (E) Iso Introduction This part of Iso 9314 on the FDDI media access control is protocol is designed to be effective at 1oo Mbit/s using a Token ring architecture andfibre optics as thetransmission medium over distances of several kilometres in extent. V 9314-2 : 1989 (E) Iso Introduction This part of Iso 9314 on the FDDI media access control is protocol is designed to be effective at 1oo Mbit/s using a Token ring architecture andfibre optics as thetransmission medium over distances of several kilometres in extent. V