EP1518353A2 - Commande adaptative d'un element reseau - Google Patents

Commande adaptative d'un element reseau

Info

Publication number
EP1518353A2
EP1518353A2 EP03761480A EP03761480A EP1518353A2 EP 1518353 A2 EP1518353 A2 EP 1518353A2 EP 03761480 A EP03761480 A EP 03761480A EP 03761480 A EP03761480 A EP 03761480A EP 1518353 A2 EP1518353 A2 EP 1518353A2
Authority
EP
European Patent Office
Prior art keywords
network
rules
ncs
network element
behavior
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Withdrawn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
EP03761480A
Other languages
German (de)
English (en)
Inventor
Joachim Charzinski
Karl Schrodi
Christian Winkler
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
Priority claimed from EP02014001A external-priority patent/EP1376928A1/fr
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP03761480A priority Critical patent/EP1518353A2/fr
Publication of EP1518353A2 publication Critical patent/EP1518353A2/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Withdrawn legal-status Critical Current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
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0893—Assignment of logical groups to network elements
    • 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
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0894—Policy-based network configuration management
    • 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
    • H04L67/50—Network services
    • H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H04L67/61—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources taking into account QoS or priority requirements
    • 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
    • H04L67/50—Network services
    • H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H04L67/63—Routing a service request depending on the request content or context
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/329—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the application layer [OSI layer 7]

Definitions

  • the subject matter of the application relates to a method for adaptively controlling a network element in a communication network and a method for coupling a plurality of network elements.
  • the PDP is only used for static configuration, it is no longer involved in normal network operation. From then on, the nodes work independently of the network control, but cannot react autonomously. If, on the other hand, incoming connection requests have to be processed (eg RSVP Resource Reservation Protocol), the PDP is the central component of network operation.
  • the rules in the PDP database are created by an administrator, • if necessary, automatically checked for consistency and prioritized by the PDP in the event of conflicts according to predefined schemes.
  • the invention is based on the problem of a method for controlling a network element of a communication network to indicate that with changing operating conditions, such as. B. load change, line break, node failure, responded with a fast autonomous forwarding of data packets.
  • a network element in an autonomous communication network is controlled via rules of conduct.
  • the network element is assigned a control instance, Network Control Server (NCS) ⁇ , which generates these rules and configures the network element with it.
  • NCS Network Control Server
  • the network works without the permanent intervention of the NCS.
  • the NCS only supplies the network elements accordingly if new, adapted rules are required due to sustainable, long-term changes to the network situation.
  • the invention has the following properties:
  • the network works in a packet-oriented and connectionless manner.
  • the network has network elements that operate autonomously using rules. - With the help of these rules, the network elements can forward packets according to specified criteria (eg quality of service), in particular also via several sensible possible routes (eg for uniform Load distribution) autonomously in normal operation. In addition, they react very quickly autonomously to network failures (e.g. line break, node failure).
  • specified criteria eg quality of service
  • several sensible possible routes eg for uniform Load distribution
  • network failures e.g. line break, node failure
  • the rules of behavior are formed and maintained in a control instance (NCS) individually assigned to a network element.
  • NCS control instance
  • NCS individually assigned control entity
  • FIG. 1 shows a schematic representation of the network elements according to the invention in the communication network
  • Fig. 2 is a schematic representation of the network and control hierarchy
  • Fig. 3 input and output variables of the adaptive network control.
  • autonomous network The network elements acting autonomously according to the invention in a network (hereinafter referred to as autonomous network) work under the guidance of an adaptive control but without their permanent intervention.
  • the elements of the autonomous network are: on the one hand, the network nodes that autonomously transmit / forward the traffic (router), which are differentiated into edge nodes (edge router) and core nodes (core router), - on the other hand, the resource control entities (RCA), which are arranged on the edge of the network.
  • router the network nodes that autonomously transmit / forward the traffic
  • core router core nodes
  • RCA resource control entities
  • the RCAs are assigned to the edge nodes. Your task is to accept resource requests (e.g. connection setup / cleardown) at an assigned input or output edge node (e.g. from a separate service control (not shown here) (see Fig. 1, ⁇ )) and to allow them to be admissible and feasible check to accept or reject them.
  • the RCA provides the corresponding edge node with parameters (see FIG. 1, ®) which enable it to set the use and usage monitoring of the resources and to configure the rules for handling the data packets associated with the corresponding traffic flow (eg marking, Policing, scheduling).
  • the RCAs work autonomously based on rules of conduct. These rules of conduct describe their control task and contain the parameters to be passed on to the Edge Router during operation explicitly or implicitly (e.g. as a calculation rule).
  • An RCA can be responsible for: »One edge router each
  • the elements (router, RCA) of the autonomous network work according to rules of conduct. These can be given by the NCS to the network elements or otherwise, e.g. via the network management.
  • the NCS can therefore be responsible for:
  • the transmission infrastructure is primarily responsible for the transmission of the data and may include mechanisms for a very fast equivalent circuit in the event of a fault (e.g. line break etc.), e.g. for SDH or similar approaches in the area of optical networks. This is a control task that is performed independently by the transmission infrastructure in the millisecond range.
  • the autonomous IP network described above autonomously processes resource requests, a control task in Cooperation with a service control, distributes the traffic in the network and reacts quickly and independently to errors. Only those errors are processed that could not already be eliminated on the transmission level.
  • the adaptive network control (regulation) according to the invention has no real-time requirements. It monitors the network and generates new rules if there are significant deviations from the target operation.
  • the time horizon is hours or more.
  • the network management serves to set the basic configuration in the direction of the network. As a rule, it is only active at very large intervals, e.g. when expanding the network.
  • NCS NCS
  • NCS can be responsible for:
  • these rules are quasi-static, so they only depend on the network topology and the static properties of the network.
  • the NCS can provide the basic information, e.g. from
  • Network management and / or obtained from the network element (s) itself may include: network topology, Line bandwidths, properties of the network element (s), (preferred) routes, traffic matrices, traffic classes, etc.
  • the rules are set in such a way that the network can ensure the properties described above in autonomous operation.
  • the NCS is basically not part of regular operations.
  • the rules are also adaptively changed, adapted or generated depending on the network state. It should be noted that the rules are adjusted on a larger time scale (e.g. 15 minutes or 2
  • the NCS selects rules from a set of predetermined rules according to the network situation. • The NCS also adjusts the predetermined rules according to the network situation.
  • Information from the network is e.g. Statistics about traffic and queues, error messages from the network, current route guidance, etc. impending permanent unbalanced loads (e.g. due to extensive failures or permanent changes in user behavior and traffic matrices) are corrected.
  • NCS Degree of information and intelligence of the, NCS graduated embodiments are possible for the NCS, which differ in the dimensions of information level and intelligence.
  • the more information (sources) available to the NCS the more optimized rules it can generate. This is closely linked to the necessary and possible intelligence of the NCS, which can range from simple logic, optimization procedures and dimensioning procedures to expert systems or neural networks. With increasing information, the need for intelligence of the NCS increases.
  • Possible sources of information include the network elements themselves (e.g. statistical information, network load, routes), network management (e.g. topology, error events), administrator inputs, static and dynamic basic data (e.g. traffic matrices).
  • network elements themselves (e.g. statistical information, network load, routes), network management (e.g. topology, error events), administrator inputs, static and dynamic basic data (e.g. traffic matrices).
  • NCS adaptive network control
  • NCSs responsible for a (sub) network are linked to each other using a suitable protocol and exchange information to compare the rules. Then, as described above, they create adapted rules and thus supply the network elements of their (sub) network.
  • Each network node receives an individual set of parameters / all network nodes receive the same parameters.
  • the parameters also include the selection of an algorithm if several algorithms can be used to handle the task.
  • the NCS can be centrally located in the network / there are one or more backup devices / there are several equal coordination devices that work with With the help of a special coordination protocol, their rule specifications are mapped / different areas of the network or network elements are controlled locally by various NCSs that communicate via a special communication protocol.
  • the rules are changed depending on an observed quality of service. • The rules are changed depending on the queue lengths observed in the network nodes.
  • the NCS is used to additionally specify the parameters in devices for connection acceptance control at the network edge.
  • the NCS communicates with other network control servers in the networks of other network operators.
  • the NCS generates current tariff information from the existing status information (and possibly other parameters supplied by network management), which it forwards to the transport control (RCAs).
  • Network elements and NCS can originate from the NCS or from the network elements.
  • the NCS actively supplies the network elements with new rules and / or parameters as soon as they are available.
  • the network elements can call up the current rules / parameters if required. Both forms of communication can be used in a network, the second being particularly suitable for the automatic configuration of new network elements (e.g. when starting up or restarting) and / or for configuring the communication parameters for the first form of communication.
  • the NCS takes into account the order in which the new rules / parameters are imported into the network elements. Since not all network elements absolutely new rules / parameters at the same time such an intelligent coupling of creation and distribution of the rules / parameters can help to avoid transient states of overload or instability.

Abstract

La présente invention concerne la commande adaptative autonome d'un élément réseau dans un réseau de communication sans connexion et orienté paquets. Cette invention concerne également le couplage de plusieurs éléments réseau.
EP03761480A 2002-06-26 2003-06-20 Commande adaptative d'un element reseau Withdrawn EP1518353A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03761480A EP1518353A2 (fr) 2002-06-26 2003-06-20 Commande adaptative d'un element reseau

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP02014001A EP1376928A1 (fr) 2002-06-26 2002-06-26 Contrôle adaptif d'un réseau de communication
EP02014001 2002-06-26
DE10255922 2002-11-29
DE10255922 2002-11-29
EP03761480A EP1518353A2 (fr) 2002-06-26 2003-06-20 Commande adaptative d'un element reseau
PCT/EP2003/006538 WO2004004215A2 (fr) 2002-06-26 2003-06-20 Commande adaptative d'un element reseau

Publications (1)

Publication Number Publication Date
EP1518353A2 true EP1518353A2 (fr) 2005-03-30

Family

ID=30001518

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03761480A Withdrawn EP1518353A2 (fr) 2002-06-26 2003-06-20 Commande adaptative d'un element reseau

Country Status (5)

Country Link
US (1) US20060023741A1 (fr)
EP (1) EP1518353A2 (fr)
CN (1) CN1666461A (fr)
AU (1) AU2003249858A1 (fr)
WO (1) WO2004004215A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004011201B4 (de) * 2004-03-04 2006-10-12 Siemens Ag Verfahren zum Management und zur Überwachung des Betriebs mehrerer in wenigstens ein Kommunikationsnetz eingebundener verteilter Hard- und/oder Softwaresysteme sowie System zur Durchführung des Verfahrens
DE102006013769B4 (de) * 2006-03-24 2008-03-27 Nokia Siemens Networks Gmbh & Co.Kg Netzwerk und Verfahren zum rechnergestützten Betreiben eines autonomen Netzwerks mit einer Mehrzahl an autonomen Endgeräten
CN101296111B (zh) * 2007-04-29 2012-06-27 华为技术有限公司 自动实现管理设备和被管理设备链接的方法及系统
US9450819B2 (en) * 2012-10-12 2016-09-20 Cisco Technology, Inc. Autonomic network sentinels

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4999833A (en) * 1985-05-06 1991-03-12 Itt Corporation Network connectivity control by artificial intelligence
JPH06318951A (ja) * 1993-01-07 1994-11-15 Toshiba Corp セル転送方法およびセル転送システム
US5923659A (en) * 1996-09-20 1999-07-13 Bell Atlantic Network Services, Inc. Telecommunications network
US5970064A (en) * 1997-06-12 1999-10-19 Northern Telecom Limited Real time control architecture for admission control in communications network
WO2001003380A1 (fr) * 1999-07-02 2001-01-11 Fujitsu Limited Dispositif d'attribution de services

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004004215A2 *

Also Published As

Publication number Publication date
CN1666461A (zh) 2005-09-07
AU2003249858A1 (en) 2004-01-19
WO2004004215A3 (fr) 2004-09-16
US20060023741A1 (en) 2006-02-02
WO2004004215A2 (fr) 2004-01-08

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