The IEC 62439 series is applicable to high-availability automation networks based on the ISO/IEC 8802-3 (IEEE 802.3) (Ethernet) technology.

This part of the IEC 62439 series 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. Fast error detection is provided by two beacon nodes, the switchover decision is taken in every node individually. The cross-network connection capability enables single attached end nodes to be connected on either of the two networks.

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7	CONTENTS
9	INTRODUCTION
10	1 Scope 2 Normative references 3 Terms, definitions, abbreviations, acronyms, and conventions 3.1 Terms and definitions
11	3.2 Abbreviations and acronyms 3.3 Conventions 4 BRP overview 5 BRP principle of operation 5.1 General 5.2 Network topology
12	Figures Figure 1 – BRP star network example Figure 2 – BRP linear network example
13	5.3 Network components Figure 3 – BRP ring network example
14	5.4 Rapid reconfiguration of network traffic 6 BRP stack and fault detection features Figure 4 – BRP stack architecture
16	7 BRP protocol specification 7.1 MAC addresses 7.2 EtherType 7.3 Fault detection mechanisms 7.4 End node state diagram
17	Figure 5 – BRP state diagram of end node
19	Tables Table 1 – BRP end node flags
20	Table 2 – BRP end node state transition table
24	7.5 Beacon end node state diagram Figure 6 – BRP state diagram for beacon end node
26	Table 3 – BRP beacon end node flags
27	Table 4 – BRP beacon end node state transition table
30	8 BRP message structure 8.1 General
31	8.2 ISO/IEC 8802-3 (IEEE 802.3) tagged frame header 8.3 Beacon message 8.4 Learning_Update message Table 5 – BRP common header with ISO/IEC 8802 3 (IEEE 802.3) tagged frame format Table 6 – BRP beacon message format Table 7 – BRP Learning_Update message format
32	8.5 Failure_Notify message 8.6 Path_Check_Request message 8.7 Path_Check_Response message 9 BRP fault recovery time Table 8 – BRP Failure_Notify message format Table 9 – BRP Path_Check_Request message format Table 10 – BRP Path_Check_Response message format
33	10 BRP service definition 10.1 Supported services
34	10.2 Common service parameters 10.3 Set_Node_Parameters service
35	Table 11 – BRP Set_Node_Parameters service parameters
36	10.4 Get_Node_Parameters service
37	Table 12 – BRP Get_Node_Parameters service parameters
38	10.5 Add_Node_Receive_Parameters service
39	Table 13 – BRP Add_Node_Receive_Parameters service parameters
40	10.6 Remove_Node_Receive_Parameters service Table 14 – BRP Remove_Node_Receive_Parameters service parameters
41	10.7 Get_Node_Status service Table 15 – BRP Get_Node_Status service parameters
42	11 BRP Management Information Base (MIB)
44	Bibliography

Status	Withdrawn
Title	Industrial communication networks. High availability automation networks – Beacon redundancy protocol (BRP)
Replaces	BS EN 62439:2008
Publisher	BSI
Committee	GEL/65/3
Pages	46
Publication Date	2010-06-30
Withdrawn Date	2021-02-08
Replaced By	BS EN IEC 62439-5:2018
ISBN	978 0 580 70829 9
Standard Number	BS EN 62439-5:2010
Identical National Standard Of	IEC 62439-5:2010, EN 62439-5:2010
Descriptors	Automatic control systems, Process control, Industrial, Communication networks, Data transmission, Data processing, Computer networks, CSMA/CD networks, Open systems interconnection, Local area networks, Information exchange
ICS Codes	35.100.05 - Multilayer applications


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BS EN 62439-5:2010

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