SNMP and Schneider Private MIB Overview

Original instructions

Introduction

An runs on:

Ethernet communication modules
CPUs with embedded Ethernet communications ports

Network management systems use to monitor and control Ethernet architecture components for the rapid network diagnosis.

Network management systems allows a network manager to:

monitor and control network components
isolate troubles and find their causes
query devices, such as host computer(s), routers, switches, and bridges, to determine their status
obtain statistics about the networks to which they are attached

NOTE: Network management systems are available from a variety of vendors. Schneider Electric provides an SNMP-based diagnostics tool called .

Simple Network Management Protocol

Ethernet communication modules support SNMP, the standard protocol for managing local area networks (LANs). SNMP defines exactly how a manager communicates with an agent. SNMP defines the format of:

requests that a manager sends to an agent
replies that the agent returns to the manager

The MIB

The set of objects that SNMP can access is known as a Management Information Base (MIB). Ethernet monitoring and management tools use standard SNMP to access configuration and management objects included in the device’s MIB, providing that:

objects that SNMP can access are defined and given unique names
manager and agent programs agree on the names and meanings of fetch and store operations

products support two SNMP network management levels:

Standard MIB II: This first level of network management can be accessed via this interface. It lets the manager identify the devices that create the architecture and retrieve general information on the configuration and operation of the Ethernet TCP/IP interface.
MIB Transparent Ready interface: Schneider has obtained a private MIB, groupeschneider (3833). This MIB includes a set of data that enables the network management system to supervise the Ethernet services. The Transparent Ready private MIB can be downloaded from the Web server on any Transparent Ready module in a PLC.

The SNMP application that runs on a network device.

simple network management protocol. The UDP/IP standard protocol used to monitor and manage devices on an IP network.

A router device connects two or more sections of a network and allows information to flow between them. A router examines every packet it receives and decides whether to block the packet from the rest of the network or transmit it. The router attempts to send the packet through the network on an efficient path.

A network switch connects two or more separate network segments and allows traffic to be passed between them. A switch determines whether a frame should be blocked or transmitted based on its destination address.

A bridge device connects two or more physical networks that use the same protocol. Bridges read frames and decide whether to transmit or block them based on their destination address.

ConneXview is a set of configuration files to be used with HiVision 6.x network management software from Hirschmann Electronics GmbH & Co. KG. ConneXview makes it possible to manage Schneider Electric Transparent Factory devices using HiVision 6.0 or newer. ConneXview is built on the widely used simple network management protocol (SNMP).

Schneider Electric’s Transparent Ready products (based on universal Ethernet TCP/IP and Web technologies) can be integrated into real-time, data sharing systems, with no need for interfaces.