Belden Hirschmann Rail Switch Power Lite User manual

UM RedundConfig RSPL

Release

2.0

02/2013

Technical Support

https://hirschmann-support.belden.eu.com

User Manual

Redundancy Configuration

Rail Switch Power Lite (RSPL)

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/DVD 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.hirschmann.com).

Printed in Germany

Hirschmann Automation and Control GmbH

Stuttgarter Str. 45-51

72654 Neckartenzlingen

Germany

Tel.: +49 1805 141538

Rel. 2.0 - 02/2013 – 11.02.2013

Contents

UM RedundConfig RSPL

Release

2.0

02/2013

Contents

About this Manual 5

Key 7

1 Network Topology vs. Redundancy Protocols 9

1.1 Network topologies 10

1.1.1 Meshed topology 10

1.1.2 Ring topology 11

1.2 Redundancy Protocols 12

2 Media Redundancy Protocol (MRP) 13

2.1 Network Structure 14

2.2 Reconfiguration time 15

2.3 Advanced mode 16

2.4 Prerequisites for MRP 17

2.5 Example Configuration 18

3 Spanning Tree 29

3.1 Basics 31

3.1.1 The tasks of the STP 31

3.1.2 Bridge parameters 32

3.1.3 Bridge Identifier 32

3.1.4 Root Path Cost 33

3.1.5 Port Identifier 34

3.1.6 Max Age and Diameter 35

3.2 Rules for Creating the Tree Structure 37

3.2.1 Bridge information 37

3.2.2 Setting up the tree structure 38

3.3 Examples 40

3.3.1 Example of determining the root path 40

3.3.2 Example of manipulating the root path 42

3.3.3 Example of manipulating the tree structure 44

3.4 The Rapid Spanning Tree Protocol 45

3.4.1 Port roles 45

3.4.2 Port states 48

Contents

UM RedundConfig RSPL

Release

2.0

02/2013

3.4.3 Spanning Tree Priority Vector 49

3.4.4 Fast reconfiguration 49

3.4.5 STP compatibility mode 50

3.5 Configuring the device 51

3.6 Guards 57

3.6.1 Activating the BPDU Guard 61

3.6.2 Activating Root Guard / TCN Guard / Loop Guard 64

A Readers’ Comments 66

B Index 69

C Further Support 71

About this Manual

UM RedundConfig RSPL

Release

2.0

02/2013

About this Manual

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.

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 “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 “Redundancy Configuration” user manual document contains the

information you require to select the suitable redundancy procedure and

configure it.

The “HiView” user manual contains information for using the HiView GUI

application. This application allows you to use the graphical user interface of

Hirschmann devices with management independently of other applications,

such as a browser.

About this Manual

UM RedundConfig RSPL

Release

2.0

02/2013

The Industrial HiVision Network Management Software provides you with

additional options for smooth configuration and monitoring:

Simultaneous configuration of multiple devices

Graphical user interface with network layout

Auto-topology discovery

Event log

Event handling

Client/server structure

Browser interface

ActiveX control for SCADA integration

SNMP/OPC gateway.

Key

UM RedundConfig RSPL

Release

2.0

02/2013

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

Execution in the Command Line Interface

WLAN access point

Router with firewall

Switch with firewall

Router

Switch

Key

UM RedundConfig RSPL

Release

2.0

02/2013

Bridge

Hub

A random computer

Configuration Computer

Server

PLC -

Programmable logic

controller

I/O -

Robot

Network Topology vs. Redundancy

Protocols

UM RedundConfig RSPL

Release

2.0

02/2013

1 Network Topology vs.

Redundancy Protocols

When using Ethernet, an important prerequisite is that data packets follow a

single (unique) path from the sender to the receiver. The following network

topologies support this prerequisite:

Line topology

Star topology

Tree topology

Figure 1: Network with line, star and tree topologies

To ensure that the communication is maintained when a connection fails, you

install additional physical connections between the network nodes.

Redundancy protocols ensure that the additional connections remain

switched off while the original connection is still working. If the connection

fails, the redundancy protocol generates a new path from the sender to the

receiver via the alternative connection.

To introduce redundancy onto layer 2 of a network, you first define 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.

Network Topology vs. Redundancy

Protocols

1.1

Network topologies

UM RedundConfig RSPL

Release

2.0

02/2013

1.1 Network topologies

1.1.1 Meshed topology

For networks with star or tree topologies, redundancy procedures are only

possible in connection with physical loop creation. The result is a meshed

topology.

Figure 2: Meshed topology: Tree topology with physical loops

For operating in this network topology, the device provides you with the

following redundancy protocols:

Rapid Spanning Tree (RSTP)

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