SIST EN IEC 62439-2:2022

SLOVENSKI STANDARD
SIST EN IEC 62439-2:2022
01-junij-2022
Nadomešča:
SIST EN 62439-2:2018
SIST EN 62439-2:2018/AC:2018
Industrijska komunikacijska omrežja - Omrežja za avtomatizacijo z visoko
razpoložljivostjo - 2. del: Protokol z redundanco medijev (MRP) (IEC 62439-2:2021)
Industrial communication networks - High availability automation networks - Part 2:
Media Redundancy Protocol (MRP) (IEC 62439-2:2021)
Industrielle Kommunikationsnetze: Hochverfügbare Automatisierungsnetze - Teil 2:
Medienredundanz-Protokoll (MRP) (IEC 62439-2:2021)
Réseaux industriels de communication - Réseaux d'automatisme à haute disponibilité -
Partie 2: Media Redudancy Protocol (MRP) (IEC 62439-2:2021)
Ta slovenski standard je istoveten z: EN IEC 62439-2:2022
ICS:
25.040.01 Sistemi za avtomatizacijo v Industrial automation
industriji na splošno systems in general
35.110 Omreževanje Networking
SIST EN IEC 62439-2:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 62439-2:2022

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SIST EN IEC 62439-2:2022


EUROPEAN STANDARD EN IEC 62439-2

NORME EUROPÉENNE

EUROPÄISCHE NORM February 2022
ICS 25.040.40; 35.100.05 Supersedes EN 62439-2:2017 and all of its amendments
and corrigenda (if any)
English Version
Industrial communication networks - High availability automation
networks - Part 2: Media Redundancy Protocol (MRP)
(IEC 62439-2:2021)
Réseaux de communication industriels - Réseaux de haute Industrielle Kommunikationsnetze: Hochverfügbare
disponibilité pour l'automatisation - Partie 2: Protocole de Automatisierungsnetze - Teil 2: Medienredundanz-Protokoll
redondance du support (MRP) (MRP)
(IEC 62439-2:2021) (IEC 62439-2:2021)
This European Standard was approved by CENELEC on 2022-01-19. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN IEC 62439-2:2022 E

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SIST EN IEC 62439-2:2022
EN IEC 62439-2:2022 (E)
European foreword
The text of document 65C/1118/FDIS, future edition 3 of IEC 62439-2, prepared by SC 65C "Industrial
networks" of IEC/TC 65 "Industrial-process measurement, control and automation" was submitted to
the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 62439-2:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022-10-19
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-01-19
document have to be withdrawn
This document supersedes EN 62439-2:2017 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62439-2:2021 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 61158-1 NOTE Harmonized as EN IEC 61158-1
IEC 61784-1 NOTE Harmonized as EN IEC 61784-1
IEC 61784-2 NOTE Harmonized as EN IEC 61784-2
2

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SIST EN IEC 62439-2:2022
EN IEC 62439-2:2022 (E)
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60050-192 - International Electrotechnical - -
Vocabulary (IEV) - Part 192:
Dependability
IEC 61158-6-10 2019 Industrial communication networks - EN IEC 61158-6-10 2019
Fieldbus specifications - Part 6-10:
Application layer protocol specification
- Type 10 elements
IEC 62439-1 2010 Industrial communication networks - EN 62439-1 2010
High availability automation networks -
Part 1: General concepts and
calculation methods
AMD1 2012  A1 2012
AMD2 2016  A2 2017
ISO/IEC 10164-1  Information technology - Open - -
Systems Interconnection - Systems
Management: Object Management
Function
ISO/IEC/IEEE 8802-3  Telecommunications and exchange - -
between information technology
systems - Requirements for local and
metropolitan area networks - Part 3:
Standard for Ethernet
IEEE Std 802.1Q 2018 IEEE Standard for Local and - -
Metropolitan Area Network - Bridges
and Bridged Networks
IEEE Std 802.3 2018 IEEE Standard for Ethernet - -


3

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SIST EN IEC 62439-2:2022




IEC 62439-2

®


Edition 3.0 2021-12




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE
colour

inside










Industrial communication networks – High availability automation networks –

Part 2: Media Redundancy Protocol (MRP)



Réseaux de communication industriels – Réseaux de haute disponibilité pour

l'automatisation –

Partie 2: Protocole de redondance du support (MRP)















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 25.040.40; 35.100.05 ISBN 978-2-8322-1057-3




Warning! Make sure that you obtained this publication from an authorized distributor.

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® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN IEC 62439-2:2022
– 2 – IEC 62439-2:2021 © IEC 2021
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
1.1 General . 10
1.2 Code component distribution . 10
2 Normative references . 11
3 Terms, definitions, abbreviated terms and conventions . 11
3.1 Terms and definitions . 11
3.2 Abbreviated terms . 12
3.3 Conventions . 12
4 MRP Overview . 12
5 MRP Media redundancy behavior . 16
5.1 General . 16
5.2 Ring ports . 16
5.3 Media Redundancy Manager (MRM) . 17
5.4 Media Redundancy Client (MRC) . 19
5.5 Redundancy domain . 19
5.6 Media Link Check . 19
5.7 Application of the Continuity Check protocol . 20
5.7.1 General . 20
5.7.2 Continuity Check Message Interval . 20
5.7.3 Maintenance Domain Level . 20
5.7.4 Maintenance Association ID (MAID) . 20
5.7.5 Maintenance Association End Point ID (MEPID) . 21
5.7.6 Sender ID TLV . 21
5.7.7 Port Status TLV . 21
5.7.8 Interface Status TLV . 21
5.8 Usage with diagnosis and alarms . 21
5.9 Ring diagnosis . 22
5.10 Multiple MRM in a single ring: Manager voting option . 22
5.10.1 General . 22
5.10.2 Basic principle of the manager voting process . 23
5.10.3 The manager voting process . 24
5.11 BLOCKED not supported (Option) . 26
5.12 Interconnection port . 26
5.13 Media redundancy Interconnection Manager (MIM) . 28
5.14 Media redundancy Interconnection Client (MIC) . 30
5.15 Interconnection domain . 31
5.16 Interconnection diagnosis . 31
6 MRP Class specification . 31
6.1 General . 31
6.2 Template. 32
6.2.1 Media redundancy template . 32
6.2.2 Media redundancy Interconnection template . 33
6.3 Attributes . 34
7 MRP Service specification . 38

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7.1 Start MRM . 38
7.2 Stop MRM . 39
7.3 State Change . 40
7.4 Start MRC . 41
7.5 Stop MRC . 42
7.6 Read MRM . 43
7.7 Read MRC . 45
7.8 Start MIM . 46
7.9 Stop MIM . 48
7.10 Interconnection State Change . 49
7.11 Start MIC . 49
7.12 Stop MIC. 51
7.13 Read MIM . 52
7.14 Read MIC . 53
8 MRP protocol specification . 55
8.1 PDU description . 55
8.1.1 Basic data types . 55
8.1.2 DLPDU abstract syntax reference . 55
8.1.3 Coding of the DLPDU field SourceAddress . 56
8.1.4 Coding of the DLPDU field DestinationAddress . 56
8.1.5 Coding of the field TagControlInformation . 56
8.1.6 Coding of the field LT . 57
8.1.7 MRP APDU abstract syntax . 57
8.1.8 Coding of the field MRP_TLVHeader . 59
8.1.9 Coding of the field MRP_SubTLVHeader . 59
8.1.10 Coding of the field MRP_Ed1Type and MRP_Ed1ManufacturerData . 60
8.1.11 Coding of the field MRP_Version . 60
8.1.12 Coding of the field MRP_SequenceID . 60
8.1.13 Coding of the field MRP_SA . 60
8.1.14 Coding of the field MRP_OtherMRMSA . 61
8.1.15 Coding of the field MRP_Prio . 61
8.1.16 Coding of the field MRP_OtherMRMPrio . 61
8.1.17 Coding of the field MRP_PortRole . 61
8.1.18 Coding of the field MRP_RingState . 62
8.1.19 Coding of the field MRP_Interval . 62
8.1.20 Coding of the field MRP_Transition . 62
8.1.21 Coding of the field MRP_TimeStamp . 62
8.1.22 Coding of the field MRP_Blocked . 63
8.1.23 Coding of the field MRP_ManufacturerOUI . 63
8.1.24 Coding of the field MRP_IECOUI . 63
8.1.25 Coding of the field MRP_ManufacturerData . 63
8.1.26 Coding of the field MRP_DomainUUID . 63
8.1.27 Coding of the field MRP_InState . 64
8.1.28 Coding of the field MRP_InID . 64
8.1.29 Coding of the field MRP_LinkInfo . 64
8.2 Protocol machines . 64
8.2.1 MRM protocol machine . 64
8.2.2 MRC protocol machine . 75
8.2.3 MRA protocol machine . 81

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SIST EN IEC 62439-2:2022
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8.2.4 MRA, MRM and MRC functions . 102
8.2.5 FDB clear timer . 106
8.2.6 Topology change timer . 106
8.2.7 MIM protocol machine . 107
8.2.8 MIC protocol machine . 115
8.2.9 MIM and MIC functions . 122
8.2.10 Interconnection Topology Change timer . 127
8.2.11 Interconnection Link Status Poll timer . 127
9 MRP installation, configuration and repair. 128
9.1 Ring port and Interconnection port parameters . 128
9.2 Ring topology parameters . 128
9.3 MRM parameters . 129
9.4 MRC parameters and constraints . 129
9.5 MRA compatibility to earlier Automanager protocol version . 130
9.6 Interconnection topology parameters . 130
9.7 MIM parameters . 130
9.8 MIC parameters and constraints . 131
9.9 Calculation of MRP ring recovery time . 132
9.9.1 Overview . 132
9.9.2 Deduction of formula . 132
9.9.3 Worst-case calculation for recovery time of 10 ms . 134
9.9.4 Worst-case calculation for 50 devices . 135
9.10 Calculation of MRP Automanager voting time . 135
9.11 Calculation of MRP Interconnection recovery time . 135
10 MRP Management Information Base (MIB) . 137
10.1 General . 137
10.2 MRP MIB with a monitoring view . 137
10.3 MRP MIB with a management and monitoring view . 151
Annex A (normative) Optional earlier version of the Automanager protocol . 166
Annex B (informative) Timing considerations for 10 Mbit/s link speed . 167
Annex C (informative) Using MRP together with scheduling and shaping mechanisms
as defined in IEEE Std 802.1Q and interspersing express traffic as defined in
IEEE Std 802.3 . 169
C.1 General . 169
C.2 Avoiding negative impact on the recovery time of an MRP ring . 169
C.2.1 General . 169
C.2.2 Interspersing express traffic . 169
C.2.3 Enhancements for scheduled traffic . 170
C.3 Configuration guidelines for increased performance of MRP . 170
C.3.1 General . 170
C.3.2 Interspersing express traffic . 170
C.3.3 Enhancements for scheduled traffic . 171
C.4 Calculation of MRP ring recovery time . 171
C.4.1 Worst-case calculation for recovery time of 10 ms, using frame
preemption . 171
C.4.2 Worst-case calculation for 50 devices, using frame preemption . 172
Annex D (informative) Advanced MRP and MRP Interconnection topologies . 173
D.1 General . 173
D.2 MRP Single Switch Multiple Rings (MRP-SSMR) . 173

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D.3 Multiple MRP Interconnection . 173
D.4 MRP Interconnection Dual Switch Multiple Couplings (MRP-I DSMC) . 174
Bibliography . 175

Figure 1 – Two MRP rings redundantly connected via MRP Interconnection . 14
Figure 2 – MRP stack . 16
Figure 3 – MRP ring topology with one manager and clients . 17
Figure 4 – MRP open ring with MRM . 18
Figure 5 – MRP ring with MRA at network startup . 23
Figure 6 – MRP ring after the manager voting process . 23
Figure 7 – Manager voting process . 25
Figure 8 – MRA located outside the MRP ring . 26
Figure 9 – MRP Interconnection topology . 28
Figure 10 – MRP ring interconnection open . 29
Figure 11 – MRP protocol machine for MRM . 65
Figure 12 – MRP protocol machine for MRC . 76
Figure 13 – MRP protocol machine for MRA. 82
Figure 14 – MRP protocol machine for MIM in RC-mode and LC-mode . 107
Figure 15 – MRP protocol machine for MIC in RC-mode and LC-mode. 115
Figure D.1 – MRP Topologies . 173
Figure D.2 – MRP Interconnection Topologies . 174
Figure D.3 – MRP Interconnection Dual Switch Multiple Couplings Topology . 174

Table 1 – Coding of the Maintenance Association ID (MAID). 21
Table 2 – MRP Start MRM . 38
Table 3 – MRP Stop MRM . 40
Table 4 – MRP Change State . 40
Table 5 – MRP Start MRC . 41
Table 6 – MRP Stop MRC . 42
Table 7 – MRP Read MRM. 43
Table 8 – MRP Read MRC . 45
Table 9 – MRP Start MIM . 47
Table 10 – MRP Stop MIM . 48
Table 11 – MRP Interconnection Change State . 49
Table 12 – MRP Start MIC . 50
Table 13 – MRP Stop MIC . 51
Table 14 – MRP Read MIM . 52
Table 15 – MRP Read MIC . 54
Table 16 – MRP DLPDU syntax for ISO/IEC/IEEE 8802-3 (IEEE Std 802.3) . 55
Table 17 – MRP OUI . 56
Table 18 – MRP MulticastMACAddress . 56
Table 19 – MRP TagControlInformation.Priority field . 57
Table 20 – MRP LT field . 57
Table 21 – MRP APDU syntax .
...