EP1472851A2 - Systeme et procede pour analyser un reseau et/ou produire la topologie d'un reseau - Google Patents

Systeme et procede pour analyser un reseau et/ou produire la topologie d'un reseau

Info

Publication number
EP1472851A2
EP1472851A2 EP03737239A EP03737239A EP1472851A2 EP 1472851 A2 EP1472851 A2 EP 1472851A2 EP 03737239 A EP03737239 A EP 03737239A EP 03737239 A EP03737239 A EP 03737239A EP 1472851 A2 EP1472851 A2 EP 1472851A2
Authority
EP
European Patent Office
Prior art keywords
network
topology
subscriber
data
hyperlink
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.)
Withdrawn
Application number
EP03737239A
Other languages
German (de)
English (en)
Inventor
Josef Braun
Joachim Feld
Stefan Roth
Thomas Talanis
Thomas Tröster
Frank Volkmann
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1472851A2 publication Critical patent/EP1472851A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/02—Standardisation; Integration
    • H04L41/0246—Exchanging or transporting network management information using the Internet; Embedding network management web servers in network elements; Web-services-based protocols
    • H04L41/0266—Exchanging or transporting network management information using the Internet; Embedding network management web servers in network elements; Web-services-based protocols using meta-data, objects or commands for formatting management information, e.g. using eXtensible markup language [XML]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/12—Discovery or management of network topologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/22—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks comprising specially adapted graphical user interfaces [GUI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/26—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using dedicated tools for LAN [Local Area Network] management

Definitions

  • the invention relates to a system and method for analyzing a network and / or generating the topology of a network.
  • subscribers of the network usually have a unique network address for exchanging data, by means of which data can be exchanged in a targeted manner.
  • Network subscribers for example switches, computers, etc., can make themselves known by sending their network address to all other subscribers in the network.
  • the structure or topology of such a network can hitherto only be determined manually, i. determined by a human, and / or with the aid of very elaborate iteration methods.
  • This object is achieved by a method for analyzing and displaying the topology of a network for exchanging data consisting of at least two subscribers, each of which is assigned at least one network address, each subscriber of the network automatically registering its hierarchical position in the network on the basis of Network address of the participant determines, and from this the structure of the network is generated and stored.
  • a system for analyzing and displaying the topology of a network for exchanging data comprising at least two subscribers, each of which is assigned at least one network address, wherein the System automatically registers each participant in the network, determines its hierarchical position in the network based on the network address of the subscriber, and from this generates and stores the structure of the network.
  • a particularly advantageous embodiment of the invention is characterized in that the topology of the network is stored as data in the format of a markup language and based on this data, the graphical representation of the topology of the network is generated ..
  • the stored so Data without problems other systems for display and / or further processing in particular via or by means of the Intra- or Internet are provided.
  • award languages advantageously Extended Markup Language (XML), Hypertext Markup Language (HTML) or related dialects are used.
  • XML Extended Markup Language
  • HTML Hypertext Markup Language
  • An extremely advantageous embodiment is the storage of the topology of the network as a file in XML format, since when using this markup language a particularly rapid representation and thus time savings is possible.
  • the graphical representation of the topology of the network in the form of a hierarchical tree structure.
  • the graphical representation allows a fast
  • a further advantageous embodiment of the invention is characterized in that the topology of the network is permanently checked, compared with the previous current state and automatically generates the current topology of the network every time the topology is changed and stored as a file. This will result in a permanent online check of the to- network and can be called up at any time and graphed as needed.
  • the particular advantage of this is that the topology of a network is permanently up-to-date, but this can happen in the background, ie without a screen. Only when needed, a computer with a screen can be coupled into the network and, for example, for maintenance activities retrieve the permanently updated data on the topology of the network and display on the screen.
  • a further particularly advantageous embodiment of the invention is characterized in that the structure of the network is stored as a file and that the file containing the current data of the topology of the network retrievable by any participant of the network and / or the topology of the network graphically is representable. Furthermore, it is particularly advantageous that the graphical representation of the topology of the network is used for the administration and / or configuration of the participants of the network and / or the network itself. This makes it possible to administrate and / or configure other users or the network itself from anywhere in the network. As a result, it is possible to intervene immediately at any point in the network regardless of the geographical location when current, for example, critical situations occur, since the current topology of the network is available at all times.
  • a further advantageous embodiment of the invention is characterized in that the topology of two or more independent subnetworks, which are connected to one another by at least one subscriber, can be automatically generated and graphically represented in a representation, wherein network islands are the first level of the hierarchical structure form.
  • This makes it possible, even several networks, so-called subnets, which are connected to each other only via a single computer or subscriber, also automatically To register and thus in a single graph to be able to automatically display the topology of multiple subnets.
  • the advantage of this embodiment is the overview of several subnetworks in a single representation, which eliminates the need to switch to the respective subnetwork separately.
  • An extremely advantageous embodiment of the invention is characterized in that each participant of the network is characterized by in each case at least one hyperlink within the data describing the topology of the network, and the interaction with a network subscriber takes place by means of this hyperlink, wherein the interaction by means of hyperlink the graphical representation of the topology of the network is feasible out. Moreover, it is particularly advantageous that the interaction with a network subscriber takes place by means of hyperlink via Internet and / or intranet.
  • the advantage here is that each network subscriber can be reached via a hyperlink via Internet connection, that is, each participant is addressed and symbolized by an Internet or intranet page, by means of the corresponding Internet address, a so-called URL address. By clicking on this hyperlink, one or more Internet or web pages are available for each participant on which corresponding configuration or administration tasks can be performed.
  • a further very advantageous embodiment of the invention is characterized in that the individual participants of the network can be represented in the graphical representation of the topology of the network in different colors, the color representation indicating the respective status of the participants. At least three different statuses are possible for each subscriber, in particular green for "connection to the subscriber is in order", red for "connection to the subscriber is faulty” and yellow for "diagnosis of the subscriber's connection is in progress". Of course, all sorts of other color combinations are just as if possible and possible. This not only provides an overview of the current topology of the network, but also a diagnosis of the individual participants of the network is possible and thus also an analysis, for example in case of error, extremely fast and inexpensive to perform. Furthermore, it is possible by means of access via hyperlink to the respective configuration or administration data of the possibly faulty connection to the subscriber to carry out a maintenance, in particular remote maintenance.
  • a further advantageous embodiment of the invention is characterized in that the topology of any switched Ethernet can be automatically analyzed and displayed.
  • switched Ethernet in particular in industrial plants, production machines, automation systems, is used very frequently and thus involves high costs for control, analysis and maintenance activities, which are considerably reduced by the invention.
  • This also applies to the use of the open-hard process in production and / or process automation systems, which also leads to considerable cost reductions.
  • FIG. 1 shows a schematic representation of a first embodiment of a network
  • FIG. 2 shows a schematic diagram for the announcement of a new participant in a network.
  • FIG 1 shows a first embodiment of a network, for example a Switched Ethernet with multiple nodes.
  • a network for example a Switched Ethernet with multiple nodes.
  • Further examples of such networks are: field bus, Profibus, Ethernet, Fast Ethernet, Industrial Ethernet or FireWire, but also clocked data networks, such as Isochrones Realtime Ethernet, and combinations thereof.
  • the networks used may be equipped with or without real-time characteristics such as clock synchronization and equidistance.
  • a plurality of coupling units, also called switches, of which only the switch 2 has been designated for clarity, are connected to one another via data lines, of which only the data lines 6 and 6a have been designated for reasons of clear representation.
  • the switches have several connection points to which additional users can be connected.
  • nodes such as industrial computers, PCs, or other computers, etc., of which only node 3 was designated for reasons of clarity, are likewise connected to the switches via such data lines. Via the data lines, the nodes can establish connections, exchange data and regulate the connection again. For this, each node must be identifiable. Furthermore, the nodes can be connected via further networks, for example Profibus network 5, with other subscribers, for example a programmable logic controller (PLC) and its terminal 4. Subscribers are, for example, central programmable controllers, programming, configuration or operating devices, peripheral devices such as input / output modules, drives, actuators, sensors, programmable logic controllers (PLCs) or other control units, computers, or machines that provide electronic data other machines, in particular to process data from other machines.
  • PLC programmable logic controller
  • Control units are controller or control units of any kind.
  • a particularly excellent computer 1 which is referred to below as a manager, is connected to the switch 2 already described above via the data line 6a.
  • the Mana ger 1 includes the functionality that enables an analysis and automatically generated graphical and hierarchical representation of any hierarchical or flat network topology, in particular of a switched Ethernet (SE), in particular also of the imaged network in Fig. 1. This process or such Functionality is referred to below as autotopology.
  • SE switched Ethernet
  • each node of the network has two different addresses, so-called IP addresses, where IP stands for Internet Protocol, where one IP address for the current operation of the respective Node within the network. It is therefore also referred to as a "productive" IP address, since it is known to the other network participants and can therefore be queried or addressed during operation, so this address is "routable".
  • IP Internet Protocol
  • the second, secondary address is not routable by the other network subscribers or is not routable by all network subscribers, for example, such an address is also referred to as a "link-local" IP address (LL IP address).
  • the "productive" IP address is either automatically assigned to the network subscribers by a network protocol, in particular an Internet protocol, such as DHCP (Dynamic Host Configuration Protocol), or also manually.
  • This "productive" IP address is associated with the respective, globally unique hardware address, also called MAC address, the network card of each computer linked.
  • the secondary LL IP addresses can be assigned to the nodes independently, whereby the uniqueness of the secondary LL IP addresses must be ensured. You can also assign manually be sen.
  • reassignment of secondary LL IP addresses may be necessary if two or more subnetworks are interconnected, if secondary LL IP addresses are used twice, and the secondary LL IP addresses allow nodes to do so log into a "live" running network, as exemplified in FIG. 1, as new subscribers and log in and make known through the use of their secondary "local link” IP address, without the productive operation of the network over the "productive" IP addresses of network participants is handled, disrupting.
  • IP multicast a new network subscriber, node 7, issues his network access by transmitting so-called IP multicast
  • Messages 10a, 10b are known to all existing network subscribers, here the switch 8 and the manager 9, one also speaks of an "advertise ent" of the network nodes, for example, when using the Simple Service Discovery Protocol (SSDP), by certain commands, for example " ssd: notify “ssdp: m-search” all switches, in particular Switch 8 and Manager 9, which are located in the network, are found out This process is also called “discovery”. All switches, in particular the switch 8 and / or manager 9, are informed of the secondary "local link" IP address, and if other protocols are used, corresponding commands are used for these protocols of a network subscriber, for example node 7.
  • SSDP Simple Service Discovery Protocol
  • the secondary "local link" IP address allows the switches, in particular switch 8, the respective MAC addresses of the new network subscribers belonging to the switches, for example node 7 ,, query by means of a query 11 for the MAC address of node 7 and enter the returned as response 12 MAC address of the node 7 as entry 13 in tables, so-called “learning tables” .
  • Each switch, in particular Switch 8 of the network also has its own “learning tables” in which the MAC addresses and the corresponding "productive" IP addresses of the network participants connected to the individual ports of the respective switch, for example node 7, are recorded.
  • the manager 9 is aware of the secondary local IP addresses of all network users, in particular of node 7, and each switch, in particular switch 8, is the MAC address and the "productive" IP address Each node, in particular known by nodes 7, which are connected to the ports of the respective switch The manager 9 determines the MAC addresses of all network components, in particular of nodes 7, which have been learned at a specific port of a switch, in particular switch 8 ""were, so in the corresponding" Learning Tables "are listed, by means of appropriate commands, for example when using the Simple Network Management Protocol (SNMP) through an SNMP GET query 14 to the switch SNMP agent, switch 8.
  • SNMP Simple Network Management Protocol
  • the manager 9 compares the "local link" IP addresses determined, for example, from the "ssdp: notify" telegrams, in particular from node 7 with the MAC addresses and, for example, from the SNMP get response 15 generates from the comparison of the data automatically the topology or hierarchy of the network, which is stored and stored in a file 16, for example in the form of a hierarchical tree. This process is called autotopology.
  • the description of the topology of the network is advantageously carried out in the markup language XML, but also all other markup languages common in the Internet, related dialects and / or file formats, in particular HTML, XHTML, etc., are possible and conceivable.
  • the graphical representation takes place (for example, by means of a user-defined OLE control, ie an OCX file) of the topology of the considered network.
  • the topology of the network can thus be represented by any browser that can interpret the markup language used, for example XML.
  • the structure of the topology is advantageously carried out as a hierarchical tree structure, so that it is also possible to represent non-contiguous networks, since network islands form, for example, in such a representation, the first level of the XML tree.
  • the described method for new registration of a network participant, or node 7, is of course also applicable if, conversely, the manager 9, or the functionality of the autotopology, is connected to an already existing network.
  • the manager for example, manager 9, constantly checks the topology of the network, compares it with the current state, automatically generates and sets the current topology of the network whenever a topology is changed, such as logging in or logging out of a previous network member as a file.
  • This allows a permanent online review of the topology of the network, and can be accessed and graphed as needed at any time.
  • the particular advantage of this is that the topology of a network is permanently up-to-date as a file, but this is in the background, i. screenless, can happen. Only when needed, a computer with a screen can be coupled into the network and, for example, for maintenance activities retrieve the permanently updated data on the topology of the network and graphically display on the screen.
  • a first advantageous refinement is the identification or symbolization of the subscribers of the network by means of at least one hyperlink in each case, for example an interpreter. netable URL and / or WWW address, etc., within the data, such as the XML data describing the topology of the network.
  • an interaction with each network subscriber can take place by means of the hyperlink which symbolizes him, whereby the interaction can be carried out by means of hyperlink, in particular from the graphical representation of the topology of the network.
  • each network subscriber can be reached via a hyperlink via Internet connection, ie, each subscriber is connected through an Internet or intranet site, by means of the corresponding Internet or intranet address, a so-called URL and / or WWW. Address, addressed and symbolized.
  • this hyperlink stands for each participant one or more Internet or websites available on which appropriate configuration or administration tasks can be done, ie, the graphical representation of the topology of the network can be used to administer and / or configure the participants in the network and / or the network itself.
  • a further very advantageous embodiment is characterized in that the individual participants of the network can be represented in the graphical representation of the topology of the network in different colors, the color representation indicating the respective status of the participants. There are at least three for each participant different statuses possible, in particular green for "connection to the subscriber is OK", red for "connection to the subscriber is faulty” and yellow for “diagnosis of the subscriber's connection is in progress”. Of course, all sorts of other color combinations are also possible and possible. This not only provides an overview of the current topology of the network, but also a diagnosis of the individual participants of the network is possible and thus also an analysis, for example in case of error, extremely fast and inexpensive to perform. Furthermore, it is possible by means of access via hyperlink to the respective configuration or administration data of the possibly faulty connection to the subscriber to carry out a maintenance, in particular remote maintenance.
  • Autotopology of a network allows the analysis and automatic graphical and hierarchical representation of any hierarchical or flat network topology, in particular of a switched Ethernet (SE).
  • SE switched Ethernet
  • the autotopology can be used both for self-configured networks (for example, by using ZEROCONF) and for any differently configured networks, for example by means of DHCP or manually configured networks.
  • ZEROCONF is called autoconfiguration.
  • Auto-configuration and auto-topology enable convenient and secure administration of a network.
  • the administration of a self-configured network based on the auto-topology data takes place in a separate and lower-priority subnet (link-local subnet), so that the productive operation of the network remains undisturbed.
  • the administration of the network is possible immediately after determining the topology.
  • the interaction with the network component to be administered takes place by means of a URL, ie hyperlink to, for example, one Internet address, within the data describing the network topology.
  • the autotopology is permanently "ONLINE."
  • the URLs of the network components to be administered are highlighted in the XML browser, for example.Click on the URL of the network component to go to their website, which offers the device for administration.
  • the disclosed invention may advantageously be used for and / or in the monitoring, control and / or control of packaging machines, presses, plastic injection molding machines, textile machines, printing machines, machine tools, robots, handling systems, woodworking machines, glass processing machines, ceramic processing machines, and Hoists are used.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Computer And Data Communications (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Small-Scale Networks (AREA)

Abstract

L'invention concerne un système et un procédé dits d'autotopologie d'un réseau ou également </= advertising based network management </= (= gestion de réseau sur la base de publicité) permettent d'analyser et de représenter de manière graphique et hiérarchique une quelconque topologie de réseau, hiérarchique ou plate, notamment un Ethernet commuté (SE). A cet effet, l'autotopologie peut s'utiliser aussi bien pour des réseaux autoconfigurés (par exemple par utilisation de ZEROCONF), que pour n'importe quel réseau configuré autrement, par exemple des réseaux configurés par DHCP ou de manière manuelle. L'utilisation de ZEROCONF s'intitule autoconfiguration. L'autoconfiguration et l'autotopologie permettent d'administrer un réseau de manière agréable et fiable. L'administration d'un réseau à autoconfiguration s'effectue sur la base de données d'autotopologie, dans un réseau secondaire séparé, de priorité secondaire (link-local), de sorte que le fonctionnement productif du réseau concerné demeure non perturbé. La topologie du réseau s'utilise comme possibilité claire d'administrer un réseau. L'administration du réseau est possible dès établissement de la topologie.
EP03737239A 2002-02-06 2003-01-24 Systeme et procede pour analyser un reseau et/ou produire la topologie d'un reseau Withdrawn EP1472851A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10204826A DE10204826A1 (de) 2002-02-06 2002-02-06 System und Verfahren zur Analyse eines Netzwerks und/oder Generierung der Topologie eines Netzwerks
DE10204826 2002-02-06
PCT/DE2003/000199 WO2003067853A2 (fr) 2002-02-06 2003-01-24 Systeme et procede pour analyser un reseau et/ou produire la topologie d'un reseau

Publications (1)

Publication Number Publication Date
EP1472851A2 true EP1472851A2 (fr) 2004-11-03

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EP03737239A Withdrawn EP1472851A2 (fr) 2002-02-06 2003-01-24 Systeme et procede pour analyser un reseau et/ou produire la topologie d'un reseau

Country Status (4)

Country Link
US (1) US7478145B2 (fr)
EP (1) EP1472851A2 (fr)
DE (1) DE10204826A1 (fr)
WO (1) WO2003067853A2 (fr)

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WO2003067853A3 (fr) 2003-10-16
WO2003067853A2 (fr) 2003-08-14
US20050226167A1 (en) 2005-10-13
US7478145B2 (en) 2009-01-13
DE10204826A1 (de) 2003-08-14

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