System for improving software defined network reliability

A software-defined network and reliability technology, applied in the field of network systems, it can solve the problems of sharp increase in controller load, difficult to estimate losses, network collapse, etc., and achieve the effect of improving processing capacity, reducing load pressure, and improving reliability.

Inactive Publication Date: 2016-04-20
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0003] Although the software-defined network has the above advantages, it also has many shortcomings in the actual application environment. In the actual network deployment and application, the controller node often exists as a single point, and it is the core node in the entire network. Network devices at the level provide flow table distribution services, so high-frequency flow data requests will c

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  • System for improving software defined network reliability

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] The physical framework of the present invention is as figure 1 As shown, it is generally divided into four layers, which can be divided into four layers from bottom to top: network equipment layer, front layer, control layer and application layer.

[0025] The network device layer is mainly composed of network devices, including routers and switches that support software-defined network-related protocols. These devices are connected to the front-end adapter in the front-end layer through the control port, and at the same time configure the address of the front-end adapter to the network device. These network devices, as the basis of the network layer, send flow table request data to the front-end adapter to implement the control function to the controller, and are only responsible for the packet forwarding of the entire network.

[00...

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Abstract

The invention discloses a system for improving software defined network reliability, comprising a network device layer for sending a flow table request and receiving flow table data returned by a preposition layer; the preposition layer for forwarding the flow table request between the network device layer and a control layer and receiving the flow table data returned by the control layer; the control layer for controlling a preposition adapter in the preposition layer to find a suitable control node according to the network topology, state and traffic change, finding the matched flow table data in the control node and returning to the preposition adapter; an application layer for user management and network configuration. According to the invention, the preposition adapter, the controller node, data analysis and storage nodes and a synchronizer are added in the topology of the traditional software defined network, therefore, the reliability and data processing capability of the network system are improved.

Description

technical field [0001] The invention relates to the technical field of network systems, in particular to a system for improving the reliability of a software-defined network. Background technique [0002] In recent years, with the vigorous development of the Internet and mobile smart terminals and the rise of cloud computing services, the current network architecture has gradually been unable to meet the needs of development. Today's network resource configuration is still to configure individual network devices, and the network architecture is complex and difficult to maintain. Software Defined Network (Software Defined Network, SDN) is a new form of network innovation architecture proposed recently. This technology can decouple the control plane and the data plane, that is, the control module in the traditional switch network is stripped, and the relatively complex Control functions are delegated to a centralized, programmable software controller. The software-defined ne...

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Application Information

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IPC IPC(8): H04L12/24H04L12/741H04L45/74
CPCH04L41/0803H04L45/74
Inventor 侯严光王汉军李喜旺于同伟
Owner STATE GRID CORP OF CHINA
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