1、 IEC 62439-4 Edition 1.0 2010-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Industrial communication networks High availability automation networks Part 4: Cross-network Redundancy Protocol (CRP) Rseaux de communication industriels Rseaux dautomatisation haute disponibilit Partie 4: Protocole de re
2、dondance inter-rseau (CRP) IEC 62439-4:2010 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2010 IEC, Geneva, Switzerland 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 phot
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16、Edition 1.0 2010-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Industrial communication networks High availability automation networks Part 4: Cross-network Redundancy Protocol (CRP) Rseaux de communication industriels Rseaux dautomatisation haute disponibilit Partie 4: Protocole de redondance inte
17、r-rseau (CRP) INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE X ICS 25.040, 35.040 PRICE CODE CODE PRIX ISBN 978-2-83220-534-1 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warn
18、ing! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 62439-4 IEC:2010 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope . 7 2 Normative references . 7 3 Terms, definitions, ab
19、breviations, acronyms, and conventions 7 3.1 Terms and definitions 7 3.2 Abbreviations and acronyms 7 3.3 Conventions 7 4 CRP overview . 8 5 CRP nodes . 8 6 CRP LAN topology . 8 7 CRP key components . 10 7.1 CRP general protocol operation . 10 7.1.1 Doubly-attached nodes (DANCs) . 10 7.1.2 Singly at
20、tached nodes . 11 7.2 CRP statistics 11 7.3 CRP Network_Status_Table 12 7.4 CRP recovery time 15 7.4.1 Recovery time calculation 15 7.4.2 Maximum repair time . 16 7.5 CRP multicast messages . 16 7.5.1 Sending . 16 7.5.2 Receiving 16 7.6 CRP unicast messages . 16 7.6.1 Sending a frame 16 7.6.2 Receiv
21、ing a frame 17 7.7 CRP redundancy information . 17 7.8 CRP redundancy statistics. 17 8 CRP protocol 17 8.1 CRP singly attached node . 17 8.2 CRP doubly attached node 17 8.3 CRP Installation, configuration and repair . 17 8.4 CRP LRE model attributes . 18 8.4.1 Attribute specification 18 8.4.2 Impact
22、 of LRE configuration attributes . 22 8.5 CRP encoding of the DiagnosticFrame 23 8.6 CRP Encoding of the AnnunciationFrame 24 8.7 CRP common protocol . 26 8.7.1 AnnunciationFrames 26 8.7.2 DiagnosticFrames 26 8.7.3 Detection of duplicate Node_Index 27 8.7.4 Detection of duplicate Node_Name 27 8.7.5
23、Failure detection based on arrival of DiagnosticFrames . 27 8.7.6 Status array entries . 28 8.7.7 Other failure detection . 28 8.8 CRP operational messages . 28 62439-4 IEC:2010 3 8.8.1 Load balancing 28 8.8.2 LAN and port maintenance 28 8.8.3 Selecting transmission path . 29 8.8.4 Selecting recepti
24、on adapter . 30 8.8.5 Crossed_cable_status . 30 8.8.6 Configured parameters 30 8.9 CRP services 31 8.9.1 Configuration options and services 31 8.9.2 LAN redundancy service specification . 31 9 CRP Management Information Base (MIB) . 38 Bibliography 41 Figure 1 CRP stack architecture 8 Figure 2 CRP s
25、ingle LAN topography . 9 Figure 3 CRP double LAN topology 9 Figure 4 CRP DiagnosticFrame pair approach . 10 Figure 5 CRP example system . 11 Table 1 CRP example Network_Status_Table for node 3 . 11 Table 2 CRP Network_Status_Table for singly connected nodes 13 Table 3 CRP Network_Status_Table for DA
26、NC 14 Table 4 CRP Path_Status_Sets . 21 Table 5 CRP example of a Path_Status_Set 21 Table 6 CRP configuration attributes impact on LAN operation 22 Table 7 CRP DiagnosticFrame format 23 Table 8 CRP AnnunciationFrame . 24 Table 9 CRP unicast destination address handling . 29 Table 10 CRP configuratio
27、n parameters . 30 Table 11 CRP Set_Assignment_Info service parameters 31 Table 12 CRP Get_Redundancy_Info service . 33 Table 13 CRP Set_Redundancy_Info service . 35 Table 14 CRP Get_Redundancy_Statistics service 37 4 62439-4 IEC:2010 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ INDUSTRIAL COMMUNICATI
28、ON NETWORKS HIGH AVAILABILITY AUTOMATION NETWORKS Part 4: Cross-network Redundancy Protocol (CRP) FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object
29、of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications
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35、ide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the lat
36、est edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whe
37、ther direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is i
38、ndispensable for the correct application of this publication. International Standard IEC 62439-4 has been prepared by subcommittee 65C: Industrial Networks, of IEC technical committee 65: Industrial-process measurement, control and automation. This standard cancels and replaces IEC 62439 published i
39、n 2008. This first edition constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC 62439 (2008): adding a calculation method for RSTP (rapid spanning tree protocol, IEEE 802.1Q), adding two new redundancy protocols: HSR (High-availabili
40、ty Seamless Redundancy) and DRP (Distributed Redundancy Protocol), moving former Clauses 1 to 4 (introduction, definitions, general aspects) and the Annexes (taxonomy, availability calculation) to IEC 62439-1, which serves now as a base for the other documents, moving Clause 5 (MRP) to IEC 62439-2 w
41、ith minor editorial changes, moving Clause 6 (PRP) was to IEC 62439-3 with minor editorial changes, 62439-4 IEC:2010 5 moving Clause 7 (CRP) was to IEC 62439-4 with minor editorial changes, and moving Clause 8 (BRP) was to IEC 62439-5 with minor editorial changes, adding a method to calculate the ma
42、ximum recovery time of RSTP in a restricted configuration (ring) to IEC 62439-1 as Clause 8, adding specifications of the HSR (High-availability Seamless Redundancy) protocol, which shares the principles of PRP to IEC 62439-3 as Clause 5, and introducing the DRP protocol as IEC 62439-6. This bilingu
43、al version (2012-12) corresponds to the monolingual English version, published in 2010-02. The text of this standard is based on the following documents: FDIS Report on voting 65C/583/FDIS 65C/589/RVD Full information on the voting for the approval of this standard can be found in the report on voti
44、ng indicated in the above table. This International Standard is to be read in conjunction with IEC 62439-1:2010, Industrial communication networks High availability automation networks Part 1: General concepts and calculation methods. A list of the IEC 62439 series can be found, under the general ti
45、tle Industrial communication networks High availability automation networks, on the IEC website. The French version of this standard has not been voted upon. This publication has been drafted in accordance with ISO/IEC Directives, Part 2. The committee has decided that the contents of this amendment
46、 and the base publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 6 62439-4 IEC
47、:2010 INTRODUCTION The IEC 62439 series specifies relevant principles for high availability networks that meet the requirements for industrial automation networks. In the fault-free state of the network, the protocols of the IEC 62439 series provide ISO/IEC 8802-3 (IEEE 802.3) compatible, reliable d
48、ata communication, and preserve determinism of real-time data communication. In cases of fault, removal, and insertion of a component, they provide deterministic recovery times. These protocols retain fully the typical Ethernet communication capabilities as used in the office world, so that the soft
49、ware involved remains applicable. The market is in need of several network solutions, each with different performance characteristics and functional capabilities, matching diverse application requirements. These solutions support different redundancy topologies and mechanisms which are introduced in IEC 62439-1 and specified in the other Parts of the IEC 62439 series. IEC 6
