Hirschmann RS20 series Manuale utente

UM Redundancy Configuration L2E

Release

7.1

12/2011

Technical Support

[email protected]

User Manual

Redundancy Configuration

Industrial Ethernet (Gigabit) Switch

RS20/RS30/RS40, MS20/MS30, OCTOPUS

The naming of copyrighted trademarks in this manual, even when not specially indicated, should

not be taken to mean that these names may be considered as free in the sense of the trademark

and tradename protection law and hence that they may be freely used by anyone.

translation, conversion into any electronic medium or machine scannable form is not permitted,

either in whole or in part. An exception is the preparation of a backup copy of the software for

your own use. For devices with embedded software, the end-user license agreement on the

enclosed CD applies.

The performance features described here are binding only if they have been expressly agreed

when the contract was made. This document was produced by Hirschmann Automation and

Control GmbH according to the best of the company's knowledge. Hirschmann reserves the right

to change the contents of this document without prior notice. Hirschmann can give no guarantee

in respect of the correctness or accuracy of the information in this document.

Hirschmann can accept no responsibility for damages, resulting from the use of the network

components or the associated operating software. In addition, we refer to the conditions of use

specified in the license contract.

You can get the latest version of this manual on the Internet at the Hirschmann product site

(www.beldensolutions.com).

Printed in Germany

Hirschmann Automation and Control GmbH

Stuttgarter Str. 45-51

72654 Neckartenzlingen

Germany

Tel.: +49 (0)1805 14-1538

Rel 7.1 12/2011 13.12.11

Contents

UM Redundancy Configuration L2E

Release

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Contents

About this Manual 5

Key 7

1 Introduction 9

1.1 Overview of Redundancy Topologies 10

1.2 Overview of Redundancy Protocols 11

2 Ring Redundancy 13

2.1 Example of a HIPER-Ring 15

2.1.1 Setting up and configuring the HIPER-Ring 17

2.2 Example of a MRP-Ring 21

3 Multiple Rings 27

4 Ring/Network Coupling 29

4.1 Variants of the ring/network coupling 30

4.2 Preparing a Ring/Network Coupling 32

4.2.1 Stand-by switch 32

4.2.2 One-Switch coupling 35

4.2.3 Two-Switch coupling 41

4.2.4 Two-Switch Coupling with Control Line 49

5 Spanning Tree 57

5.1 The Spanning Tree Protocol 59

5.1.1 The tasks of the STP 59

5.1.2 Bridge parameters 60

5.1.3 Bridge Identifier 60

5.1.4 Root Path Cost 61

5.1.5 Port Identifier 63

5.2 Rules for Creating the Tree Structure 64

5.2.1 Bridge information 64

5.2.2 Setting up the tree structure 64

5.3 Example of determining the root path 67

5.4 Example of manipulating the root path 69

Contents

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5.5 Example of manipulating the tree structure 71

5.6 The Rapid Spanning Tree Protocol 72

5.6.1 Port roles 72

5.6.2 Port states 74

5.6.3 Spanning Tree Priority Vector 75

5.6.4 Fast reconfiguration 76

5.6.5 Configuring the Rapid Spanning Tree 77

5.7 Combining RSTP and MRP 87

5.7.1 Application example for the combination of RSTP and

MRP 89

A Readers’ Comments 92

B Index 95

C Further Support 97

About this Manual

UM Redundancy Configuration L2E

Release

7.1

12/2011 5

About this Manual

The “Redundancy Configuration User Manual” document contains the

information you require to select the suitable redundancy procedure and

configure it.

The “Basic Configuration” user manual contains the information you need to

start operating the device. It takes you step by step from the first startup

operation through to the basic settings for operation in your environment.

The “Installation” user manual contains a device description, safety

instructions, a description of the display, and the other information that you

need to install the device.

The “Industry Protocols” user manual describes how the device is connected

by means of a communication protocol commonly used in the industry, such

as EtherNet/IP and PROFINET IO.

The “GUI” reference manual contains detailed information on using the

graphical interface to operate the individual functions of the device.

The “Command Line Interface” Reference Manual contains detailed

information on using the Command Line Interface to operate the individual

functions of the device.

About this Manual

6UM Redundancy Configuration L2E

Release

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The Industrial HiVision Network Management Software provides you with

additional options for smooth configuration and monitoring:

Simultaneous configuration of multiple devices

Graphic interface with network layout

Auto-topology discovery

Event log

Event handling

Client/server structure

Browser interface

ActiveX control for SCADA integration

SNMP/OPC gateway.

Maintenance

Hirschmann are continually working on improving and developing their

software. You should regularly check whether there is a new version of

the software that provides you with additional benefits. You will find

software information and downloads on the product pages of the

Hirschmann website.

Key

UM Redundancy Configuration L2E

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Key

The designations used in this manual have the following meanings:

Symbols used:

List

Work step

Subheading

Link Cross-reference with link

Note: A note emphasizes an important fact or draws your attention to a dependency.

Courier ASCII representation in user interface

Execution in the Graphical User Interface (Web-based Interface user interface)

Execution in the Command Line Interface user interface

WLAN access point

Router with firewall

Switch with firewall

Router

Switch

Key

8UM Redundancy Configuration L2E

Release

7.1

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Bridge

Hub

A random computer

Configuration Computer

Server

PLC -

Programmable logic

controller

I/O -

Robot

Introduction

UM Redundancy Configuration L2E

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1 Introduction

The device contains a range of redundancy functions:

HIPER-Ring

MRP-Ring

Ring/Network coupling

Rapid Spanning Tree Algorithm (RSTP)

Introduction

1.1

Overview of Redundancy

Topologies

UM Redundancy Configuration L2E

Release

7.1

12/2011

1.1 Overview of Redundancy

Topologies

To introduce redundancy onto layer 2 of a network, first clarify which network

topology you require. Depending on the network topology selected, you then

choose from the redundancy protocols that can be used with this network

topology.

The following topologies are possible:

The Ring Redundancy Protocol MRP has particular properties to offer:

You have the option of coupling to MRP-Rings other ring structures that

work with RSTP (see on page 87 “Combining RSTP and MRP”).

Network topology Possible redundancy

procedures

Comments

Tree structure

without loops

(cycle-free)

Only possible in

connection with

physical loops

Topology with 1

loop

RSTP

Ring Redundancy

Ring Redundancy procedures (HIPER-Ring, Fast

HIPER-Ring or MRP) provide shorter switching

times than RSTP.

Topology with 2

loops

RSTP

Ring Redundancy

Ring redundancy: an MRP-Ring with an RSTP-

Ring.

Topology with 3

non-nested loops

RSTP

Ring Redundancy

Ring coupling

The ring coupling provides particular support

when redundantly coupling a redundant ring to

another redundant ring, or to any structure that

only works with Hirschmann devices

Table 1: Overview of Redundancy Topologies

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