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Virtual network single link fault recovery method based on SDN and system thereof

A fault recovery and virtual network technology, applied in the field of network virtualization, can solve problems such as waste of resources, inability to flexibly realize link fault recovery, etc., and achieve the effect of taking into account key protection

Inactive Publication Date: 2017-03-15
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The original single-link fault recovery relies solely on redundant links, which can only protect key links, and the waste of resources caused by setting redundant links is large, and it is impossible to flexibly realize link fault recovery

Method used

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  • Virtual network single link fault recovery method based on SDN and system thereof
  • Virtual network single link fault recovery method based on SDN and system thereof

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Embodiment Construction

[0028] The detailed content of the present invention and its specific implementation will be further described below in conjunction with the accompanying drawings.

[0029] see figure 1 As shown, the SDN-based virtual network single-link fault recovery method of the present invention is based on the premise that the virtual network is deployed in a pure SDN environment, that is, all network switching devices are SDN switching devices and are connected to the controller. Based on the above conditions, the system Obtain a view of the entire network and perform fault recovery in the event of a fault. It solves the most frequent single link failure problem in the virtual network. By directly setting redundant links with the same source address and destination address for some key links when the virtual network is established, it can be directly used when the key link fails. Redundant links are used for fault recovery, which reduces the process of recalculating paths and ensures r...

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Abstract

The invention relates to a virtual network single link fault recovery method based on an SDN and a system thereof and belongs to the network virtualization technology field. The method comprises the following steps of (1), setting a redundancy link on a virtual network; (2) when the link is failed, checking usability of the redundancy link, and if the redundancy link is usable, using the redundancy link to replace the failed link; and (3) if the redundancy link can not be used, removing the failed link, recalculating a path, and using a SDN controller to issue a flow table and changing the link. The method and the system have advantages that virtual network single link fault recovery based on the SDN is realized and a single link fault which occupies the largest portion of virtual network faults can be rapidly processed.

Description

technical field [0001] The invention relates to the technical field of network virtualization, in particular to an SDN-based virtual network single-link fault recovery method and system. It can be applied to data centers and wide area networks for fast recovery when a single link failure occurs. Background technique [0002] Due to the frequent establishment and withdrawal of links in virtual networks, link failures are prone to occur. Single link failures account for most of the failures, accounting for about 70% of all failures. Solving the problem of single link failures is very important. practical significance. The original single-link fault recovery relies solely on redundant links, which can only protect key links, and the resource waste caused by setting redundant links is huge, and link fault recovery cannot be implemented flexibly. [0003] The main goal of software-defined networking is to realize the separation of router / switch data plane and control plane. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/703H04L12/707H04L45/28H04L45/24
CPCH04L45/22H04L45/28
Inventor 胡亮于潇菂车喜龙王峰付韬姜婧妍郝娉婷
Owner JILIN UNIV
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