IEC 62439-3:2021
Industrial communication networks - High availability automation networks - Part 3: Parallel Redundancy Protocol (PRP) and High-availability Seamless Redundancy (HSR)
Abstract
IEC 62439-3:2021 specifies two related redundancy protocols that, in the event of failure of any network element, provide seamless switchover with zero recovery time:
• PRP (Parallel Redundancy Protocol), which allows attaching nodes to two separate networks while allowing attachment of nodes to one network only; and
• HSR (High-availability Seamless Redundancy), which allows threading two-port nodes in a ring or multi-port nodes in a meshed network.
The contents of the corrigendum of April 2023 have been included in this copy.
• PRP (Parallel Redundancy Protocol), which allows attaching nodes to two separate networks while allowing attachment of nodes to one network only; and
• HSR (High-availability Seamless Redundancy), which allows threading two-port nodes in a ring or multi-port nodes in a meshed network.
The contents of the corrigendum of April 2023 have been included in this copy.
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Additional information
| Publication type | International Standard |
|---|---|
| Publication date | 2021-12-15 |
| Edition | 4.0 |
| Available language(s) | English/French |
| TC/SC | TC 65/SC 65C - Industrial networksrss |
| ICS | 25.040.40 - Industrial process measurement and control 35.100.05 - Multilayer applications |
| Stability date | 2025 |
| Pages | 493 |
| File size | 27526 KB |
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