No IACS data loss during a single fault in LAN A or LAN B.
Advantages of using PRP over other network resiliency technologies include: PRP technology is well suited for a variety of critical infrastructure IACS in process and heavy industries that require continuous, high availability operation. PRP implements redundancy by using PRP-enabled nodes (IACS devices) that send duplicate Ethernet frames to two fail-independent network infrastructures, known as LAN A and LAN B. PRP is defined in the international standard IEC 62439-3 and provides high availability in Ethernet networks. This includes guidelines for creating redundant EtherNet/IP network topologies in a Cell/Area Zone using PRP, and connecting PRP topologies to a larger plant-wide or site-wide network using redundant distribution and RedBox switches. This chapter describes design considerations and configuration recommendations when implementing Parallel Redundancy Protocol (PRP) in an IACS architecture.
PlantPAx Distributed Control System with PRPĬPwE Parallel Redundancy Protocol Design Considerations.
Examples of PRP Architectures using NTP/PTP mode.
CPwE PRP architecture with GPS Reference Clock.
Precision Time Protocol (CIP Sync) with PRP.
EtherChannel, HSRP, and Routing Protocol Considerations.
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