EP2721771A2 - Procédé d'interconnexion redondante et à faibles perturbations de réseaux de communication à l'aide du protocole d'arbre couvrant rapide rstp (rapid spanning tree) - Google Patents

Procédé d'interconnexion redondante et à faibles perturbations de réseaux de communication à l'aide du protocole d'arbre couvrant rapide rstp (rapid spanning tree)

Info

Publication number
EP2721771A2
EP2721771A2 EP12732974.6A EP12732974A EP2721771A2 EP 2721771 A2 EP2721771 A2 EP 2721771A2 EP 12732974 A EP12732974 A EP 12732974A EP 2721771 A2 EP2721771 A2 EP 2721771A2
Authority
EP
European Patent Office
Prior art keywords
network
coupling
networks
segments
rstp1
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP12732974.6A
Other languages
German (de)
English (en)
Inventor
Henri MÜLLER
George DITZEL
Oliver Kleineberg
Alen Mehmedagic
Dirk Mohl
Zbigniew Pelzer
Markus RENZ
Markus Seehofer
Vijay Vallala
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hirschmann Automation and Control GmbH
Original Assignee
Hirschmann Automation and Control GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hirschmann Automation and Control GmbH filed Critical Hirschmann Automation and Control GmbH
Publication of EP2721771A2 publication Critical patent/EP2721771A2/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks
    • H04L12/437—Ring fault isolation or reconfiguration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/48—Routing tree calculation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/58—Association of routers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery

Definitions

  • the invention relates to a method for interconnecting networks, such as communication networks, in particular Ethernet networks, redundantly and without feedback, wherein in the at least one, preferably several network segments having multiple network devices that communicate with each other and exchange data via data lines, are present, according to the features of the preamble of claim 1.
  • RSTP Rapid Spanning Tree Protocol
  • MRP Media Redundancy Protocol
  • the RSTP can cover any desired network topologies by expanding its effective range to all network devices in all networks or network segments to be coupled, and thus to be able to recognize all existing loops.
  • IEEE 802.1 D-2004 a single protocol instance operates on each network device, all distributed protocol instances are assigned to a common, logical RSTP network.
  • MSTP Multiple Spanning Tree Protocol
  • CIST Common Internal Spanning Tree
  • MSTP allows splitting network segments into regions that behave towards remote network devices as a single RSTP / MSTP device.
  • the MSTP regions are not completely free of each other's effects, the failure of the so-called root bridge the CIST can affect all MSTP regions and their connections to each other.
  • the invention is therefore based on the object to limit the effects of a reconfiguration on that network segment in which this makes an error actually required.
  • the present invention thus describes a method for advantageously interconnecting networks, such as communication networks, in particular Ethemet networks, with each other in a redundant and non-reactive manner and increasing their performance.
  • the solution according to the invention is a method for using the Rapid Spanning Tree Protocol in order to redundantly couple network segments with one another and at the same time to ensure that the coupled network segments work against each other without any reaction.
  • more than one RSTP protocol instance is implemented on network devices for coupling network segments.
  • a network segment can thus be connected to each RSTP protocol instance.
  • FIG 1 such a structure is shown schematically for two to be coupled networks or network segments by a dual RSTP device, the so-called coupling element here.
  • the device DuaIRSTP Single acts as a coupling element between the two network segments RSTP1 - primary ring and RSTP2 - secondary ring.
  • the two coupled networks are hereby designed by way of example as ring networks, but the method is not limited thereto.
  • RSTP1 - primary ring and RSTP2 - secondary ring can be interdependent network segments of a single physical network.
  • RSTP1 - primary ring and RSTP2 - secondary ring can also be two independent, independently acting networks.
  • more than two RSTP "n" segments (“n"> 2) may be present and coupled to each other via a respective additional coupling element.
  • the protocol instance RSTP1 is assigned the network connections to the network RSTP1-primary ring and the protocol entity RSTP2 the network connections to the network RSTP2-secondary ring. If an error occurs in the RSTP1 - primary ring and this error causes a reconfiguration of the network, this reconfiguration only has an effect on the RSTP1 network. Within the duaIRSTP single coupling element, only the protocol instance RSTP1 is also affected. This ensures that both RSTP networks are coupled without feedback.
  • FIG. 1 Another challenge solved by the invention is the redundant coupling of two or more networks by means of the described method.
  • the coupling element duaIRSTP-Single itself represents a single fault element, in the event of its failure all communication between the two network segments is interrupted. Due to this fact, the coupling device can also be designed redundantly, as shown schematically in Figure 2.
  • the redundant coupling of the two network segments RSTP1 - primary ring and RSTP2 - secondary ring in turn creates a network loop.
  • This network loop can not be resolved by RSTP itself because the RSTP instances RSTP1 and RSTP2 on the respective two coupling units duaIRSTP master and duaIRSTP slave are not connected to each other due to the required freedom from feedback and thus can not detect the network loop.
  • Another system component in the coupling elements master and slave ensures that only one of the two devices always transmits frames between the two network segments.
  • the coupling devices exchange control messages with each other via the two network segments RSTP1 - primary ring and RSTP2 - secondary ring, in order to determine the state of the other one Monitor coupling element.
  • One of the devices assumes the state of the coupling master, all other devices the state of a coupling slave. Only the coupling master transfers frames between the network segments, the coupling slaves block the switching between the RSTP protocol instances.
  • the master or slave states can be assumed by the coupling devices both by manual configuration and by an automatic selection mechanism.
  • a slave must start switching frames between the network segments if the connection between the two network segments is no longer guaranteed by the master. This is shown by way of example in FIG. In Figure 3, Case 1, the device SW1 has the master state and SW2 the slave state. Thus, SW1 mediates between the segments (indicated by the double arrow), while SW2 has interrupted its connection between the RSTP instances (indicated by the cross) to prevent frames from looping.
  • the device recognizes SW2 by completely failing to communicate with device SW1, which itself must activate the connection between its RSTP instances.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Communication Control (AREA)

Abstract

L'invention concerne un procédé d'interconnexion redondante et à faibles perturbations de réseaux, par exemple, de réseaux de communication, notamment de réseaux Ethernet, plusieurs appareils de réseau qui communiquent entre eux par l'intermédiaire de lignes de données et échangent des données, étant présents dans le réseau présentant au moins un, de préférence plusieurs segments de réseau, caractérisé en ce qu'au moins plus d'une entité de protocole RSTP est appliquée aux appareils de réseau aux fins de couplage de segments de réseau de telle façon que chaque entité de protocole RSTP puisse se lier à un segment de réseau.
EP12732974.6A 2011-06-20 2012-06-20 Procédé d'interconnexion redondante et à faibles perturbations de réseaux de communication à l'aide du protocole d'arbre couvrant rapide rstp (rapid spanning tree) Ceased EP2721771A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011105390 2011-06-20
PCT/EP2012/002608 WO2012175202A2 (fr) 2011-06-20 2012-06-20 Procédé d'interconnexion redondante et à faibles perturbations de réseaux de communication à l'aide du protocole d'arbre couvrant rapide rstp (rapid spanning tree)

Publications (1)

Publication Number Publication Date
EP2721771A2 true EP2721771A2 (fr) 2014-04-23

Family

ID=46466412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12732974.6A Ceased EP2721771A2 (fr) 2011-06-20 2012-06-20 Procédé d'interconnexion redondante et à faibles perturbations de réseaux de communication à l'aide du protocole d'arbre couvrant rapide rstp (rapid spanning tree)

Country Status (5)

Country Link
US (1) US20140185624A1 (fr)
EP (1) EP2721771A2 (fr)
CN (1) CN103621012A (fr)
DE (1) DE102012012131A1 (fr)
WO (1) WO2012175202A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10764213B2 (en) * 2019-02-01 2020-09-01 Dell Products L.P. Switching fabric loop prevention system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100195660A1 (en) * 2009-02-05 2010-08-05 Yamatake Corporation Ring type ethernet system, ring type switch, ring connection control circuit, ring type ethernet system control method, ring type switch control method and ring connection control method

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002353998A (ja) * 2001-05-30 2002-12-06 Nec Corp 通信装置及びそれを用いたネットワークシステム並びにスパニングツリー構築方法
US6917986B2 (en) * 2002-01-07 2005-07-12 Corrigent Systems Ltd. Fast failure protection using redundant network edge ports
US7269135B2 (en) * 2002-04-04 2007-09-11 Extreme Networks, Inc. Methods and systems for providing redundant connectivity across a network using a tunneling protocol
US7209435B1 (en) * 2002-04-16 2007-04-24 Foundry Networks, Inc. System and method for providing network route redundancy across Layer 2 devices
US7602706B1 (en) * 2003-05-15 2009-10-13 Cisco Technology, Inc. Inter-ring protection for shared packet rings
US7627654B2 (en) * 2003-06-09 2009-12-01 Foundry Networks, Inc. System and method for multiple spanning tree protocol domains in a virtual local area network
JP2005269059A (ja) * 2004-03-17 2005-09-29 Fujitsu Ltd データ中継装置、データ中継方法およびデータ中継プログラム
US20080304428A1 (en) * 2005-11-16 2008-12-11 Nokia Siemens Networks Gmbh & Co. Kg Method for Establishing a Loop-Free Tree Structure in a Data Transmission Network and Associated Network Element
US7639699B2 (en) * 2006-08-04 2009-12-29 Cisco Technology, Inc. Technique for sharing a physical port among a plurality of virtual bridges on a switch in a computer network
US8693375B2 (en) * 2006-10-17 2014-04-08 Hewlett-Packard Development Company, L.P. Automated multiple-instance spanning tree reconfiguration
CN101188564B (zh) * 2007-11-21 2010-06-02 中兴通讯股份有限公司 一种多生成树协议的实现方法
CN101567892B (zh) * 2009-06-04 2012-06-27 华为技术有限公司 一种实现mstp多进程的方法及装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100195660A1 (en) * 2009-02-05 2010-08-05 Yamatake Corporation Ring type ethernet system, ring type switch, ring connection control circuit, ring type ethernet system control method, ring type switch control method and ring connection control method

Also Published As

Publication number Publication date
US20140185624A1 (en) 2014-07-03
WO2012175202A3 (fr) 2013-02-21
DE102012012131A1 (de) 2012-12-20
WO2012175202A2 (fr) 2012-12-27
CN103621012A (zh) 2014-03-05

Similar Documents

Publication Publication Date Title
EP2721784B1 (fr) Procédé de fonctionnement d' un équipement de réseau et équipement de réseau
EP2098018B1 (fr) Système de communication présentant une structure maître-esclave
EP1869836B1 (fr) Unite maitre, systeme de communication et procede pour les faire fonctionner
EP2343857B1 (fr) Noeud de réseau pour un réseau de communication
EP1062787B1 (fr) Reseau local, notamment reseau ethernet, ayant des proprietes de redondance et un gestionnaire de redondance
EP2098019B1 (fr) Système de communication présentant une structure maître-esclave
DE102012000158B4 (de) Adaptives mehrfach redundantes ringförmiges Netzwerk und Verfahren zum Wählen einer Umleitung
EP3017570B1 (fr) Dispositif de controle, noeud de reseau et procede pour l'echange des donnees sur un reseau
EP2838220A1 (fr) Procédé de transmission redondante de messages dans un réseau de communication industriel et appareil de communication
EP2169882B1 (fr) Commande de gouvernail de bateau dotée d'un bus CAN
DE102007015539A1 (de) Verfahren zum Rekonfigurieren eines Kommunikationsnetzwerks
EP2713563B1 (fr) Système de communication industriel pouvant fonctionner de manière redondante, appareil de communication et procédé de fonctionnement redondant d'un système de communication industriel
EP1955480A1 (fr) Réseau ayant des propriétés de redondance, commutateur ethernet pour un réseau de ce type et procédé de configuration d un réseau de ce type
EP2652917B1 (fr) Réseau intermédiaire de topologie annulaire et procédé de création d'une liaison de réseau entre deux domaines d'un réseau
EP2359540B1 (fr) Procédé de raccordement à un réseau quelconque de segments de réseau possédant des propriétés de redondance
EP2721771A2 (fr) Procédé d'interconnexion redondante et à faibles perturbations de réseaux de communication à l'aide du protocole d'arbre couvrant rapide rstp (rapid spanning tree)
DE102015218906B4 (de) Verfahren zum Betreiben eines Datenübertragungssystems und Datenübertragungssystem
DE102016113322A1 (de) Slave-Steuerung für Ethernet-Netzwerk
EP2817923B1 (fr) Réseau de calculateurs avec un bus de liaison de forme annulaire
EP3157187B1 (fr) Procédé temporisé de transport périodique en temps réel et tolérant aux pannes de données dans un système informatique réparti
EP1803261B1 (fr) Procede de detection d'erreurs dans un systeme de distribution d'informations par paquets
EP3104558B1 (fr) Interface réseau, réseau et procédé de transmission de données dans le réseau
EP2290882B1 (fr) Procédé de redondance d'erreurs multiple dans des réseaux à topologies annulaires
EP2854345A1 (fr) Procédé et appareil de communication couplé pour la transmission de messages dans un réseau de communication industriel à fonctionnement redondant
EP2182680B1 (fr) Procédé destiné au fonctionnement d'un réseau de communication et composants de communication

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20131023

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20151130

REG Reference to a national code

Ref country code: DE

Ref legal event code: R003

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20170921