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A data dual-path backup transmission method for software-defined network

A software-defined network and transmission method technology, which is applied in the field of data dual-path backup transmission, can solve problems such as the inapplicability of technical means in SDN networks, and achieve the effects of avoiding the deterioration of the network environment, improving reliability, and avoiding data loss

Active Publication Date: 2017-06-06
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] In view of the above problems, the existing solutions are mostly aimed at the traditional distributed network, and its technical means are not applicable in the SDN network

Method used

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  • A data dual-path backup transmission method for software-defined network
  • A data dual-path backup transmission method for software-defined network
  • A data dual-path backup transmission method for software-defined network

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Embodiment Construction

[0057] Below in conjunction with accompanying drawing and embodiment, content of the present invention is described in detail:

[0058] refer to figure 1 According to the present invention, a data dual-path backup transmission method for a software-defined network includes a centralized path planning process and a data dual-path backup and forwarding process. The delay allocation process is implemented in the network manager 1, and the delay guaranteed forwarding process is implemented by the network switch 2 on the transmission path.

[0059] refer to figure 2 , the path planning process includes the following steps:

[0060] Step 1: The network switch calculates the real-time link cost of each link at regular intervals:

[0061]

[0062] Among them, r i for link L i the remaining bandwidth of

[0063] Step 2: The network switch sends the link cost to the network manager step by step, and updates the link cost information in the network manager;

[0064] Step 3: Th...

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Abstract

The invention discloses a data dual-path backup transmission method for a software-defined network, including two processes of a centralized path planning process and a dual-path forwarding process. Method The SDN network manager allocates two links with the least overlapping nodes for the service flow with dual-path backup transmission requirements according to the entire network topology, and sends the allocation result to each switch node on the path in the form of a forwarding flow table. The network switch forwards the service flow according to the flow entry: the start-end switch receives user data, copies the user data flow according to the flow entry, and sends it to two downstream switches respectively; the intermediate switch forwards the data according to the flow entry, and the end switch receives The data aggregated and sent to end users. The present invention adopts two links with the smallest coincidence degree in the network for data transmission, avoids data loss caused by failure of a certain node or a certain link in the network to the greatest extent, and improves the reliability of key service transmission.

Description

technical field [0001] The invention belongs to the technical field of data communication, is a reliable transmission method for a software-defined network, and in particular relates to a data dual-path backup transmission method for a software-defined network. Background technique [0002] With the development of Internet technology, the application of software-defined network (SDN) is more and more extensive. Different from traditional networks, software-defined networks adopt a structure that separates control and forwarding, and can re-plan the network with programs in a centrally controlled manner without changing hardware devices. Therefore, the cost of network deployment is reduced, and the burden of network operation and maintenance is reduced. [0003] Network applications have higher and higher requirements for data transmission reliability, especially in industrial applications. However, network transmission is often uncertain, especially in wireless networks, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/707H04L12/24H04L45/24
Inventor 曾鹏李志博李栋俞雪婷刘金娣于海斌
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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