IEC 62439-4:2010
(Main)Industrial communication networks - High availability automation networks - Part 4: Cross-network Redundancy Protocol (CRP)
Industrial communication networks - High availability automation networks - Part 4: Cross-network Redundancy Protocol (CRP)
IEC 62439-4:2010 is applicable to high-availability automation networks based on the ISO/IEC 8802-3 (IEEE 802.3) (Ethernet) technology. It specifies a redundancy protocol that is based on the duplication of the network, the redundancy protocol being executed within the end nodes, as opposed to a redundancy protocol built in the switches. The switchover decision is taken in each node individually. The cross-network connection capability enables single attached end nodes to be connected on either of the two networks. It cancels and replaces IEC 62439 published in 2008 and constitutes a technical revision. It 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-availability 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 with minor editorial changes,
- moving Clause 6 (PRP) was to IEC 62439-3 with minor editorial changes,
- 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 maximum 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 publication is to be read in conjunction with IEC 62439-1:2010.
Réseaux de communication industriels - Réseaux d'automatisation à haute disponibilité - Partie 4: Protocole de redondance inter-réseau (CRP)
La CEI 62439-4:2010 est applicable aux réseaux d'automatisation à haute disponibilité basés sur la technologie ISO/CEI 8802-3 (IEEE 802.3) (Ethernet). Elle définit un protocole de redondance basé sur la duplication du réseau, le protocole de redondance étant exécuté dans les n uds terminaux, par opposition à un protocole de redondance intégré aux commutateurs. La décision de commutation est prise individuellement par chaque n ud. La capacité de connexion inter-réseau permet à des n uds terminaux simples d'être connectés à l'un ou l'autre des deux réseaux. Elle annule et remplace la CEI 62439 publiée en 2008. et constitue une révision technique. Elle inclut les modifications techniques majeures suivantes par rapport à la CEI 62439 (2008):
- ajout d'une méthode de calcul pour les RSTP (Rapid spanning tree protocol, IEEE 802.1Q),
- ajout de deux nouveaux protocoles de redondance: HSR (High-availability Seamless Redundancy) et DRP (Distributed Redundancy Protocol),
- transfert des anciens Articles 1 à 4 (introduction, définitions, aspects généraux) et des Annexes (taxonomie, calcul de disponibilité) dans la CEI 62439-1, qui sert désormais de base pour les autres documents,
- transfert de l'Article 5 (MRP) dans la CEI 62439-2 avec des modifications éditoriales mineures,
- transfert de l'Article 6 (PRP) dans la CEI 62439-3 avec des modifications éditoriales mineures,
- transfert de l'Article 7 (CRP) dans la CEI 62439-4 avec des modifications éditoriales mineures, et
- transfert de l'Article 8 (BRP) dans la CEI 62439-5 avec des modifications éditoriales mineures,
- ajout d'une méthode de calcul de la durée maximale de rétablissement de RSTP dans une configuration réduite (anneau) dans la CEI 62439-1 comme Article 8,
- ajout de spécifications de protocole HSR (High-availability Seamless Redundancy), qui partage les principes de PRP dans la CEI 62439-3 comme Article 5, et
- introduction du protocole DRP en tant que CEI 62439-6.
Cette publication doit être lue conjointement avec la CEI 62439-1:2010.
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IEC 62439-4 ®
Edition 1.0 2010-02
INTERNATIONAL
STANDARD
Industrial communication networks – High availability automation networks –
Part 4: Cross-network Redundancy Protocol (CRP)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 62439-4 ®
Edition 1.0 2010-02
INTERNATIONAL
STANDARD
Industrial communication networks – High availability automation networks –
Part 4: Cross-network Redundancy Protocol (CRP)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
X
ICS 25.040, 35.040 ISBN 978-2-88910-707-0
– 2 – 62439-4 © IEC:2010(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references .7
3 Terms, definitions, abbreviations, 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 attached 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 Receiving 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 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 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(E) – 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 reception 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 single 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 DANC .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 configuration 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(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL COMMUNICATION NETWORKS –
HIGH AVAILABILITY AUTOMATION NETWORKS –
Part 4: Cross-network Redundancy Protocol (CRP)
FOREWORD
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...
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)
Réseaux de communication industriels – Réseaux d'automatisation à haute
disponibilité –
Partie 4: Protocole de redondance inter-réseau (CRP)
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
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International Standards for all electrical, electronic and related technologies.
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latest edition, a corrigenda or an amendment might have been published.
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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)
Réseaux de communication industriels – Réseaux d'automatisation à haute
disponibilité –
Partie 4: Protocole de redondance inter-réseau (CRP)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX X
ICS 25.040, 35.040 ISBN 978-2-83220-534-1
– 2 – 62439-4 IEC:2010
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, abbreviations, 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 attached 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 Receiving 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 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 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 reception 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 single 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 DANC . 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 configuration 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
INTERN
...
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