标准摘要
[中文适用范围]： IEC 62439系列适用于基于ISO/IEC/IEEE 8802-3（IEEE 802.3）（以太网）技术的高可用性自动化网络。 IEC 62439 系列的这一部分指定了一种基于环形拓扑@的恢复协议，该协议旨在在专用介质冗余管理器节点的控制下对网络中交换机间链路或交换机@的单个故障做出确定性反应。 [外文原描述]： IEC 62439-2:2016 is applicable to high-availability automation networks based on the ISO/IEC/IEEE 8802-3 (IEEE 802.3) (Ethernet) technology. This part of the IEC 62439 series specifies a recovery protocol based on a ring topology, designed to react deterministically on a single failure of an inter-switch link or switch in the network, under the control of a dedicated media redundancy manager node.This second edition cancels and replaces the first edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - adding a protocol extension to select the media redundancy manager automatically; - adding a protocol to redundantly connect media redundancy protocol rings. This publication is to be read in conjunction with IEC 62439-1:2010 .
英文名称Industrial communication networks - High availability automation networks - Part 2: Media Redundancy Protocol (MRP)