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Publication details

Publication CODE Title
IEC 62439-4:2010 (2010-02) INDUSTRIAL COMMUNICATION NETWORKS - HIGH AVAILABILITY AUTOMATION NETWORKS - PART 4: CROSS-NETWORK REDUNDANCY PROTOCOL (CRP)
 
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Description
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.
Class  C990  (IEC PUBLICATIONS IEC PUBLICATIONS)
Available files
EN version

EN/FR version

Status
Status IEC PUBLICATION
Situation Currently active
Partly replaces  IEC 62439:2008
Origin
Committee TC 65/SC 65C
DIGITAL COMMUNICATIONS
Responsible Ir DELENS Marc
Approval
Registration 105541
ICS-Code (International Standards Classification) 25.040.40 , 35.100.05
NBN Status New
IEC publication date 2010-02-26
IEC stability date 2025-12-31
IEC last modification date 2020-04-09