scope:

General

The IEC 62439 series is applicable to high-availability automation networks based on the ISO/IEC/IEEE 8802-3 (IEEE Std 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.

Code component distribution

Each Code Component is a ZIP package containing at least the electronic representation of the Code Component itself and a file describing the content of the package (IECManifest.xml).

The IECManifest contains different sections giving information on:

• the copyright notice;

• the identification of the code component;

• the publication related to the code component;

• the list of the electronic files which compose the code component;

• an optional list of history files to track changes during the evolution process of the code component.

The Code Components included in this IEC standard are a set of SNMP MIBs. The Code Component IEC-62439-2-MIB.mib is a file containing the MIB with the management and monitoring view. It will be available in a full version, which contains the MIB defined in this document with the documentation associated and access is restricted to purchaser of this document.

The Code Component (full version) is freely accessible on the IEC website for download but the usage remains under the licensing conditions.

The life cycle of a code component is not restricted to the life cycle of the related publication. The publication life cycle goes through two stages, Version (corresponding to an edition) and Revision (corresponding to an amendment). Consequently, new release(s) of the Code Component(s) may be released, which supersede(s) the previous release, and will be distributed through the IEC website.

The latest version/release of the document will be found by selecting the file IEC_62439-2.MIB.{VersionStateInfo}.full.zip for the code component with the highest value for VersionStateInfo.

In case of any differences between the downloadable code and the IEC pdf published content, the downloadable code(s) is(are) the valid one; it may be subject to updates. See history files.