Title :
The Parallel Redundancy Protocol for industrial IP networks
Author :
Rentschler, Markus ; Heine, H.
Author_Institution :
Hirschmann Autom. & Control GmbH, Neckartenzlingen, Germany
Abstract :
The “Parallel Redundancy Protocol” (PRP) according to IEC 62439-3 realizes active network redundancy by packet duplication over two independent networks that operate in parallel. It has been specifically designed for industrial networks to meet highest availability requirements. In case of a single network failure, seamless redundancy is provided for data communication between PRP nodes that are connected to both networks. However, PRP was designed as a layer 2 Ethernet protocol that is transparent to higher protocol layers. In its current version, PRP is not able to support IP routing. This is because an IP router would change the source MAC address field of the Ethernet header which is used by a PRP receiver node for duplicate detection. In this work we propose and discuss a novel approach that keeps the PRP duplicate identification information across IP router boundaries.
Keywords :
IP networks; local area networks; protocols; telecommunication network routing; Ethernet header; IEC 62439-3; IP router boundaries; PRP duplicate identification information; PRP nodes; PRP receiver node; industrial IP networks; layer 2 Ethernet protocol; packet duplication; parallel redundancy protocol; protocol layers; Delays; IP networks; Redundancy; Routing; Routing protocols; Switches;
Conference_Titel :
Industrial Technology (ICIT), 2013 IEEE International Conference on
Conference_Location :
Cape Town
Print_ISBN :
978-1-4673-4567-5
Electronic_ISBN :
978-1-4673-4568-2
DOI :
10.1109/ICIT.2013.6505877
