IEC 62439-5:2010

IEC 62439-5 ®
Edition 1.0 2010-02
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – High availability automation networks –
Part 5: Beacon Redundancy Protocol (BRP)

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IEC 62439-5 ®
Edition 1.0 2010-02
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – High availability automation networks –
Part 5: Beacon Redundancy Protocol (BRP)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
X
ICS 25.040, 35.040 ISBN 978-2-88910-708-7
– 2 – 62439-5 © 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.8
3.3 Conventions .8
4 BRP overview.8
5 BRP principle of operation.8
5.1 General .8
5.2 Network topology.8
5.3 Network components .10
5.4 Rapid reconfiguration of network traffic .11
6 BRP stack and fault detection features .11
7 BRP protocol specification.13
7.1 MAC addresses .13
7.2 EtherType .13
7.3 Fault detection mechanisms .13
7.4 End node state diagram .13
7.5 Beacon end node state diagram .21
8 BRP message structure .27
8.1 General .27
8.2 ISO/IEC 8802-3 (IEEE 802.3) tagged frame header.28
8.3 Beacon message.28
8.4 Learning_Update message .28
8.5 Failure_Notify message.29
8.6 Path_Check_Request message .29
8.7 Path_Check_Response message .29
9 BRP fault recovery time.29
10 BRP service definition .30
10.1 Supported services.30
10.2 Common service parameters .31
10.3 Set_Node_Parameters service .31
10.4 Get_Node_Parameters service.33
10.5 Add_Node_Receive_Parameters service .35
10.6 Remove_Node_Receive_Parameters service .37
10.7 Get_Node_Status service.38
11 BRP Management Information Base (MIB).39
Bibliography.41

Figure 1 – BRP star network example .9
Figure 2 – BRP linear network example .9
Figure 3 – BRP ring network example .10
Figure 4 – BRP stack architecture.11

62439-5 © IEC:2010(E) – 3 –
Figure 5 – BRP state diagram of end node.14
Figure 6 – BRP state diagram for beacon end node .21

Table 1 – BRP end node flags .16
Table 2 – BRP end node state transition table .17
Table 3 – BRP beacon end node flags .23
Table 4 – BRP beacon end node state transition table .24
Table 5 – BRP common header with ISO/IEC 8802-3 (IEEE 802.3) tagged frame format.28
Table 6 – BRP beacon message format .28
Table 7 – BRP Learning_Update message format .28
Table 8 – BRP Failure_Notify message format .29
Table 9 – BRP Path_Check_Request message format .29
Table 10 – BRP Path_Check_Response message format .29
Table 11 – BRP Set_Node_Parameters service parameters.32
Table 12 – BRP Get_Node_Parameters service parameters .34
Table 13 – BRP Add_Node_Receive_Parameters service parameters .36
Table 14 – BRP Remove_Node_Receive_Parameters service parameters.37
Table 15 – BRP Get_Node_Status service parameters .38

– 4 – 62439-5 © IEC:2010(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL COMMUNICATION NETWORKS –
HIGH AVAILABILITY AUTOMATION NETWORKS –

Part 5: Beacon Redundancy Protocol (BRP)

FOREWORD
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
International Standard IEC 62439-5 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 in 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-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,

62439-5 © IEC:2010(E) – 5 –
– 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
...