WO2008003755A2 - Procede de pilotage automatique d'un reseau de telecommunications avec mutualisation locale de connaissances - Google Patents
Procede de pilotage automatique d'un reseau de telecommunications avec mutualisation locale de connaissances Download PDFInfo
- Publication number
- WO2008003755A2 WO2008003755A2 PCT/EP2007/056835 EP2007056835W WO2008003755A2 WO 2008003755 A2 WO2008003755 A2 WO 2008003755A2 EP 2007056835 W EP2007056835 W EP 2007056835W WO 2008003755 A2 WO2008003755 A2 WO 2008003755A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- equipment
- knowledge
- logical
- network
- cooperation
- Prior art date
Links
Classifications
-
- 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]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
- H04L63/1441—Countermeasures against malicious traffic
- H04L63/1458—Denial of Service
-
- 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
- H04L45/02—Topology update or discovery
-
- 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
- H04L45/20—Hop count for routing purposes, e.g. TTL
Definitions
- the field of the invention is that of automatic control of a telecommunications network.
- These devices are responsible for many network control tasks, such as routing, filtering, monitoring, diagnostics, and so on.
- control tasks require for their proper functioning to possess knowledge, that is to say contextualized information of various natures relating to the links and the other equipments of the network (for example, the load, the state of functioning - in-service / out-of-service - links or equipment, detection of illegal traffic, etc.), and more generally on all the objects that are supported by network management and control processes.
- a device in order to properly perform a routing task, a device must know the load or the unavailability of the links and other equipment located in the network (the knowledge of the state of a link being held by the connected equipment at each end of the link).
- control tasks are carried out independently of one another.
- each control task collects and represents, independently of the others, the information it needs.
- the scope of knowledge is usually global. It can also be a physical local scope, that is to say concerning physical neighbors. Thus, in many cases, each node of the network is kept informed of any changes occurring in the network, or of any local modification affecting its physical neighbors.
- the information broadcast concerns for example the state of the links, the number of buffers occupied, or the capacity of the available lines. For example, OSPF dynamic routing ("Open Shortest")
- Path First needs to propagate to the entire network the changes that occur on any link to which a device is connected.
- this document does not propose to pool knowledge between neighbors.
- the information broadcast is only used by the focal nodes, the other equipment only distributing them without storing or using them.
- disseminated data is not used in their local context but is sent back through the focal node. It is therefore basic information, but not knowledge within the meaning of the invention.
- the invention aims to overcome the aforementioned drawbacks in relation to conventional equipment (non-pooling, global reach, heterogeneity, non-cooperation). To this end, it proposes a local mutualisation of knowledge (and not information) intended to be used to feed the control tasks that a network equipment is responsible for carrying out.
- the invention relates to a method for controlling a telecommunications network comprising equipment responsible for carrying out network control tasks, each equipment comprising a knowledge base intended to store, in the form of elements referred to as knowledge, contextual information required for the equipment to carry out the control tasks for which it is responsible, the method being characterized in that:
- a logical neighborhood is defined consisting of network equipments intended to cooperate to carry out the same control task, said task in cooperation; the knowledge stored in the different knowledge bases is pooled in the logical neighborhood, by implementing for each equipment of the logical neighborhood a cooperation of said equipment with the other equipment of the logical neighborhood;
- the task is carried out in cooperation by feeding it with the shared knowledge stored in the knowledge base of said equipment.
- the logical neighborhood is defined by configuration; - the logical neighborhood is defined by subscription of one equipment to another;
- a first equipment dynamically subscribes to a second equipment following the discovery by the first equipment that it has common resources and / or common constraints and / or common situations with the second equipment; - the cooperation of equipment of the logical neighborhood is regularly implemented, to feed the task in cooperation of relevant shared knowledge;
- the cooperation between the equipment of the logical neighborhood for carrying out the task in cooperation further comprises the establishment of a dialogue between said equipment;
- a fault diagnosis control is implemented, with a logical neighborhood of equipment equipped with symbolic processing means adapted to fault diagnosis;
- a defense control against a denial of service attack is implemented, with a logical neighborhood consisting of edge routers of the network;
- the knowledge is destination address histograms made from the destination addresses in the network edge routers, and the cooperative task consists of monitoring a threshold overflow for the number of messages destined for the same address;
- the invention relates to equipment of a telecommunications network, respectively a telecommunications network, comprising means for implementing the method according to the first aspect of the invention.
- FIG. 1 is a diagram showing a logical neighborhood corresponding to a list of routers intended to cooperate to perform the same control task
- FIG. 2 is a diagram representing a logical neighborhood corresponding to a set of edge routers, as well as a DDOS attack crossing the edge routers of the logical neighborhood
- Figure 3 is a diagram showing the steering performed according to the invention to diagnose a failure following the failure of a link
- Figure 4 is a diagram showing the control performed according to the invention to diagnose a failure following the failure of a virtual circuit.
- the term “knowledge” contextualized information that is to say information with one or more attributes depending on the context.
- the state of a link is information, while the state of a link to which one adds attributes such as for example weights according to an internal behavior of the equipment on which is located the link is an acquaintance.
- attributes such as for example weights according to an internal behavior of the equipment on which is located the link.
- An infinite weight can be attributed to the state of a link because an intelligent agent built into the equipment believes that the link should absolutely not be used, even if the link is completely free.
- all the knowledge required by the control tasks of a device are represented in a uniform and structured manner in a knowledge base maintained at the equipment level.
- This database can, for example, be maintained in a format such as RDF (Resource Description Format) or KIF (Knowledge Interchange).
- RDF Resource Description Format
- KIF Knowledge Interchange
- the invention effectively proposes to define a logical neighborhood of equipment consisting of equipment intended to cooperate to perform the same control task, said task in cooperation.
- the equipment of a logical neighborhood can cooperate to provide a diagnosis of failure, or cooperate to detect a denial of service attack.
- a logical neighborhood can group an arbitrary set of equipment from the moment when these equipment wish to cooperate to perform the same task. It thus corresponds to a set of network equipment included in a list of equipment.
- a logical neighborhood can be given by configuration, or else be developed by subscription of one equipment to another.
- a logical neighborhood may evolve over time, to include one or more new equipment, or exclude one or more devices. This development can be done in particular to take into account the state of the network, as well as the cooperation process between the equipment of the neighborhood.
- a neighborhood is given by configuration when a user explicitly establishes the list of devices that are part of the neighborhood.
- Subscription neighborhood development can be accomplished by discovering potential neighbors of equipment. This elaboration is for example governed by the fact that equipment has common resources (such as virtual circuits), or common constraints (such as security constraints), or even common situations (when for example these devices are the same). border nodes of a network). In such a case, a device forms its neighborhood by dynamically subscribing to the equipment it chooses. The latter are thus warned that they are part of his neighborhood.
- a logical neighborhood gathers at time t all the network equipments (routers R A ) which possess means symbolic processing (for example an inference engine) for fault diagnosis, and cooperating to perform the same network control task, namely a cooperative task of the fault diagnosis type.
- a logical neighborhood groups a list of Rb edge routers of the network, which cooperate to perform the same network control task, namely a defense-type cooperation task against a denial of service attack.
- a knowledge base may contain the following knowledge:
- the knowledge stored in the different knowledge bases is pooled with a delimited range corresponding to the logical neighborhood by implementing for each equipment of the logical neighborhood a cooperation of said equipment with the other equipment of the logical neighborhood. In this way, a mutualisation of knowledge is realized between the equipment of the logical neighborhood, responsible for carrying out the same control task (task in cooperation).
- the knowledge stored in the knowledge bases of the various equipment of the logical neighborhood responsible for performing the same control task are pooled by cooperation between equipment of the logical neighborhood.
- An equipment implements a cooperation with the other equipment of the logical neighborhood, which takes into account each knowledge of its knowledge base.
- This cooperation can take place according to different variants; it is preferably carried out by a cooperation of distributed intelligent agents (each agent being installed in a logical neighborhood equipment) having as input the shared knowledge of the equipment of the logical neighborhood.
- intelligent agents are understood as software agents capable of manipulating elaborate knowledge and pursuing the goals assigned to them by taking into account the changes occurring in their logical neighborhood and by acting on the equipment.
- the cooperation takes place at intervals of time which may vary according to the nature of knowledge, equipment (router, firewall, set-top box, application server, etc.), the logical neighborhood and the state of the network.
- the moments of cooperation can also be asynchronous, always depending on the measurements, for example by cooperating with each measurement record.
- the existence of the shared knowledge base makes it possible to feed control tasks with relevant knowledge.
- the available knowledge is indeed very fresh because it comes from a regular cooperation between the equipment of the same logical neighborhood.
- the available knowledge is also adapted to the cooperative control task.
- the cooperation between equipment of a logical neighborhood for carrying out the task of checking the so-called cooperative task network can be implicit or explicit.
- the implicit cooperation is based on the fact that equipment from a neighborhood has knowledge that is common to them (eg equipment A can be informed of the state of charge of equipment B). Control tasks make their decisions based on pooled knowledge. By taking into account the state of their neighbors and taking the appropriate decisions, the equipment implicitly cooperates with each other.
- Autopilot consists of implementing control tasks powered at ad hoc time intervals, with knowledge coherent knowledge bases having a scope delimited by logical neighborhoods.
- the pooled knowledge base feeds the control tasks of the telecommunications network in a coordinated way since the knowledge is fresh and relevant.
- the knowledge base of each node contains as knowledge the state of the links: link X -> Y with the attribute "in service” or "out of service”. If we assume that the logical neighborhood of node C contains at least nodes A and B, the cooperation between the nodes A, B, C of the logical neighborhood makes it possible to pool the knowledge stored in the knowledge bases of each of these nodes.
- this mutualization will allow node C to know that: link A -> B "out of service” and that link B -> A "out of service”.
- Node C logically deduces, feeding its control task of failure diagnosis of shared knowledge about its logical neighborhood, that the AB line is out of service.
- the method according to the invention is equally applicable to the discovery of a virtual circuit failure.
- a network of which a part is represented on figure 4 and suppose that the logical neighborhood of the node F contains the nodes A, B, C and D and that the virtual circuit open between A and D passes by B and C.
- DoS Denial of Service
- DDoS distributed DoS
- FIG. 2 is a diagram illustrating a DDOS attack originating from four edge routers Rb with flows (represented by arrows F) converging towards the same terminal equipment A.
- the logical neighborhood here consists of edge routers Rb of the telecommunications network.
- the knowledge of the shared knowledge base used here to defend against a DOS / DDOS type attack corresponds to a destination address histogram made from the most frequent destination addresses in the edge routers.
- the update of the knowledge is carried out with a frequency of f times per second.
- the cooperative control task implemented by the edge routers Rb of the logical neighborhood, corresponds to the monitoring of a threshold exceeding for the number of messages towards the same destination address.
- a verification of the transmission addresses makes it possible to consolidate the diagnosis.
- the control can then be achieved by a control action on the streams. For example, it is about destroying the messages towards this address.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Exchange Systems With Centralized Control (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Computer And Data Communications (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07765809A EP2036271A2 (fr) | 2006-07-05 | 2007-07-05 | Procede de pilotage automatique d'un reseau de telecommunications avec mutualisation locale de connaissances |
US12/306,922 US20100070451A1 (en) | 2006-07-05 | 2007-07-05 | Method of automatic driving of a telecommunications network with local mutualization of knowledge |
CA002656060A CA2656060A1 (fr) | 2006-07-05 | 2007-07-05 | Procede de pilotage automatique d'un reseau de telecommunications avec mutualisation locale de connaissances |
JP2009517276A JP2009541886A (ja) | 2006-07-05 | 2007-07-05 | 知識のローカルな相互化を用いて電気通信ネットワークを自動的に駆動する方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR06/06101 | 2006-07-05 | ||
FR0606101A FR2903548B1 (fr) | 2006-07-05 | 2006-07-05 | Procede de pilotage automatique d'un reseau de telecommunications avec mutualisation locale de connaissances |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2008003755A2 true WO2008003755A2 (fr) | 2008-01-10 |
WO2008003755A3 WO2008003755A3 (fr) | 2008-02-28 |
Family
ID=37836685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/056835 WO2008003755A2 (fr) | 2006-07-05 | 2007-07-05 | Procede de pilotage automatique d'un reseau de telecommunications avec mutualisation locale de connaissances |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100070451A1 (fr) |
EP (1) | EP2036271A2 (fr) |
JP (1) | JP2009541886A (fr) |
KR (1) | KR20090121267A (fr) |
CA (1) | CA2656060A1 (fr) |
FR (1) | FR2903548B1 (fr) |
WO (1) | WO2008003755A2 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2154918A1 (fr) * | 2008-08-13 | 2010-02-17 | Alcatel, Lucent | Procédé décentralisé pour le traitement d'une panne de cellule dans un réseau de radiocommunication |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10476947B1 (en) | 2015-03-02 | 2019-11-12 | F5 Networks, Inc | Methods for managing web applications and devices thereof |
US11616806B1 (en) | 2015-05-08 | 2023-03-28 | F5, Inc. | Methods for protecting web based resources from D/DoS attacks and devices thereof |
CN105087487B (zh) * | 2015-09-23 | 2018-09-18 | 协和干细胞基因工程有限公司 | 一种高效扩增cik的方法 |
US10581902B1 (en) * | 2015-11-30 | 2020-03-03 | F5 Networks, Inc. | Methods for mitigating distributed denial of service attacks and devices thereof |
US10834110B1 (en) | 2015-12-18 | 2020-11-10 | F5 Networks, Inc. | Methods for preventing DDoS attack based on adaptive self learning of session and transport layers and devices thereof |
US10397250B1 (en) | 2016-01-21 | 2019-08-27 | F5 Networks, Inc. | Methods for detecting remote access trojan malware and devices thereof |
US10432652B1 (en) | 2016-09-20 | 2019-10-01 | F5 Networks, Inc. | Methods for detecting and mitigating malicious network behavior and devices thereof |
US11038869B1 (en) | 2017-05-12 | 2021-06-15 | F5 Networks, Inc. | Methods for managing a federated identity environment based on application availability and devices thereof |
US11539740B1 (en) | 2018-02-02 | 2022-12-27 | F5, Inc. | Methods for protecting CPU during DDoS attack and devices thereof |
US11349981B1 (en) | 2019-10-30 | 2022-05-31 | F5, Inc. | Methods for optimizing multimedia communication and devices thereof |
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JP3377125B2 (ja) * | 1994-03-09 | 2003-02-17 | 日本電信電話株式会社 | ネットワーク負荷平滑化方法 |
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JP2003333092A (ja) * | 2002-05-14 | 2003-11-21 | Mitsubishi Electric Corp | ネットワークシステム、攻撃パケット追跡方法および攻撃パケット防御方法 |
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JP3973986B2 (ja) * | 2002-07-12 | 2007-09-12 | 株式会社エヌ・ティ・ティ・ドコモ | ノード探索方法、ノード、通信システム及びノード探索プログラム |
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EP1713206A1 (fr) * | 2005-04-11 | 2006-10-18 | Last Mile Communications/Tivis Limited | Réséau de communication distribué comprenant des stations de base connectées sans fil |
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2006
- 2006-07-05 FR FR0606101A patent/FR2903548B1/fr not_active Expired - Fee Related
-
2007
- 2007-07-05 JP JP2009517276A patent/JP2009541886A/ja active Pending
- 2007-07-05 US US12/306,922 patent/US20100070451A1/en not_active Abandoned
- 2007-07-05 EP EP07765809A patent/EP2036271A2/fr not_active Withdrawn
- 2007-07-05 WO PCT/EP2007/056835 patent/WO2008003755A2/fr active Application Filing
- 2007-07-05 KR KR1020097000119A patent/KR20090121267A/ko not_active Application Discontinuation
- 2007-07-05 CA CA002656060A patent/CA2656060A1/fr not_active Abandoned
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2154918A1 (fr) * | 2008-08-13 | 2010-02-17 | Alcatel, Lucent | Procédé décentralisé pour le traitement d'une panne de cellule dans un réseau de radiocommunication |
Also Published As
Publication number | Publication date |
---|---|
EP2036271A2 (fr) | 2009-03-18 |
KR20090121267A (ko) | 2009-11-25 |
JP2009541886A (ja) | 2009-11-26 |
CA2656060A1 (fr) | 2008-01-10 |
WO2008003755A3 (fr) | 2008-02-28 |
US20100070451A1 (en) | 2010-03-18 |
FR2903548A1 (fr) | 2008-01-11 |
FR2903548B1 (fr) | 2008-10-17 |
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