ISO/TR TECHNICAL REPORT 13283 First edition 1998-12-15 Industrial automation Time-critical communications architectures User requirements and network management for time-critical communications systems Automatisation industrielle - Architectures de communications en temps réel Prescriptions des utilisateurs et gestion de réseau pour les systemes de communications en temps réel Tso Reference number ISO/TR 13283:1998(E) y IHS under ted without license from IHS Not for Resale ISO/TR 13283:1998(E) Contents Page 1 Scope 2 References. 2.1 International Standards 2.2 Documents under development... 3 Terms and definitions 3.1 TCCA terms 3.2 OSI Basic Reference Model terms... 3.3 Service convention terms 3.4 Basic Reference Model of Open Distributed Processing terms.. 3.5 QoS Basic Framework terms. 3.6 TCNM terms. 4 User requirements for time-critical communications systems. 4.1 Introduction. 4.2 Transaction models 4.3 User control. 4.4 Integration issues of openness. 4.5 Timing-related issue 4.6 Architecture considerations ... 4.7 TCCS and OSl.. ..21 4.8 TccA network management. .22 4.9 Network management in TCCN... ..22 5 QoS requirements for network management in TcCA .22 5.1Introduction 22 @ISO1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic International OrganizationforStandardization Casepostale56·CH-1211Geneve20·Switzerland Internet [email protected] Printed in Switzerland Not for Resale @ ISO ISO/TR13283:1998(E) 5.2 Network management requirements 6 QoS model of TCNM, 27 6.1 Introduction. 6.2 Architectural principles .28 6.3 Information exchanged .29 6.4 QoS requirement flow .. ..29 6.5 QoS data flow between (N)-subsystem and TCNM . .32 7 QoS characteristics of TCCA 7.1 Introduction.. ..32 7.2 QoS characteristics 8 QoS management functions in TCNM 44 8.1 Introduction.. ..44 8.2 Activity phases of QoS management . 45 8.3 QoS management functions. .45 9 Methods and mechanisms for network management in TCCA 9.1 Introduction.. 49 9.2 Network management methods and mechanisms. Copyright International Organization for Standardization ili Not for Resale @ ISO ISO/TR 13283:1998(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 liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. technical committee may propose the publication of a Technical Report of one of the following types: type 1, when the necessary support cannot be obtained for the publication of an International Standard, despite repeated efforts; type 2, when the subject is still under technical development or where for any other reason there is the future type 3, when a technical committee has collected data of a different kind from that which is normally published as an International Standard ("state of the art", for example). be:transformedintoInternationalStandards.TechnicalReportsoftype3donotnecessarilyhavetobereviewed ISO/TR 13283, which is a Technical Report of type 3, was prepared by Technical Committee ISO/TC 184, Industrial automation systems and integration, Subcommittee sc 5, Architecture and communications. communications. The network architectures which have been standardized so far were primarily intended for general traffic and arenot always capable of providingadequateperformanceand resiliencefor time-critical communications,especiallywheretime-critical andnon-time-criticaltrafficcoexists.InparticularinmanyCiM and wide networks (e.g. MAP) and the fieldbus-type networks. This intermediate network should carry both bulk data transfer ad time-criti