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Data flow forwarding anomaly detection method, controller and system

An anomaly detection and data flow technology, applied in digital transmission systems, transmission systems, data exchange networks, etc., can solve the problem of inconsistency between data flow forwarding rules and actual data flow forwarding conditions

Active Publication Date: 2017-09-22
HUAWEI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present invention provide a data flow forwarding anomaly detection method, controller and system, which are used to solve the problem of detecting the inconsistency between the data flow forwarding rule and the actual data flow forwarding situation due to the abnormality of the flow table

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  • Data flow forwarding anomaly detection method, controller and system
  • Data flow forwarding anomaly detection method, controller and system
  • Data flow forwarding anomaly detection method, controller and system

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Embodiment Construction

[0100] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0101] The embodiment of the present invention provides a data stream forwarding anomaly detection system, refer to figure 1 As shown in the figure, it includes: a controller 11, a switching device 12, and a host 13. The embodiments of the present invention are mainly applied in SDN / OpenFlow (Chinese name: OpenFlow) networks, requiring at least one switching device to operate normally without being attacked on the path of a data flow; the...

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Abstract

The invention discloses a data flow forwarding anomaly detection method, a device and a system, which relate to the field of computer network communication and aim at solving the problem that detection is carried out when a data flow forwarding rule and the actual data flow forwarding condition are inconsistent due to the anomaly of a flow table. The data flow forwarding anomaly detection method comprises steps: the controller determines a switching device through which a to-be-detected data flow passes; at least one flow table term matched with the data flow in the switching device is acquired, wherein the flow table term comprises an actual flow and a matching domain, and the actual flow is the value of a counter corresponding to the matching domain; according to the theoretical flow of the data flow matched with the matching domain on the switching device and the actual flow, overdetermined equations are built, wherein the theoretical flow forms an unknown number vector of the overdetermined equations and the actual flow forms a constant term vector of the overdetermined equations, and according to the overdetermined equations, whether the anomaly happens to the at least one flow table term is determined. The embodiment of the invention is applied to a SDN (software defined network).

Description

Technical field [0001] The invention relates to the field of computer network communication, and in particular to a method, a controller and a system for detecting data stream forwarding abnormality. Background technique [0002] Reference figure 1 As shown in the SDN (English name: software defined network, Chinese name: software defined network) network is a new type of network architecture, which integrates many control functions of the network by separating the control layer and forwarding layer of the network. On the controller, and through the interactive communication between the controller and the switching device to issue control information, each switching device processes the data stream according to the control information. Specifically, the control information is delivered through the flow table. [0003] The flow table is a data flow processing rule issued by the controller to the switching device. The flow table inside the switching device is composed of flow table ...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L12/741H04L12/755H04L12/911H04L12/26H04L45/74H04L47/41
CPCH04L43/10H04L45/021H04L47/827H04L63/1425H04L63/1466H04L63/1441H04L43/026H04L43/16H04L45/38H04L45/745H04L47/41
Inventor 王东晖周亚东胡成臣
Owner HUAWEI TECH CO LTD