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Fast reroute method based on SDN network

A fast and routing technology, applied in the field of network communication, can solve the problems of not being able to meet the QOS requirements of network services, prolonging the recovery time of network service failures, etc., and achieve the effect of faster service recovery and rapid service recovery

Inactive Publication Date: 2015-10-14
SHENZHEN NEW GREENNET TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method in an SDN network for realizing fast rerouting based on the local shortest path of a failed link, so as to solve the problem of failure of network services in the case of a large number of flows affected by node failure in the prior art The recovery delay is long, which cannot meet the QOS requirements of network services

Method used

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  • Fast reroute method based on SDN network
  • Fast reroute method based on SDN network
  • Fast reroute method based on SDN network

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Embodiment Construction

[0031] The present invention will be further described in detail with an embodiment below, but it should be noted that the protection scope of the present invention is not limited thereto.

[0032] Such as figure 1 As shown, it is the constructed SDN network topology diagram, where the controller is the controller, and the failed link in the network is e 1 , nodes a and b are network devices (such as switches) associated with the failed link; affected by the failed link e 1 The source node of the affected service flow f is s, and the destination node is d. In addition, for the convenience of description, G represents the network topology, V represents the set of vertices, E represents the set of links, and P represents the set of paths in the network topology.

[0033] Such as figure 2 Shown, the fast rerouting method based on SDN network comprises the following steps:

[0034] S1. In the SDN network, the control information needs to be realized by the controller. Therefo...

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Abstract

The invention discloses a fast reroute method based on an SDN network. While the link of the SDN network is failed, a controller uses a computing method that the nodes located at two ends of a local shortest path, namely a failed link are a source node and a destination node to finish failure recovery so as to achieve fast reroute. The fast reroute method of the invention solves the problem that the recovery latency of a business is lengthy because of a plurality of flows influenced by failed link, and improves destroy-resistant performance of the SDN network. The fast reroute method of the invention meets the QOS requirement and has very high practical value and promotion value.

Description

technical field [0001] The present invention relates to the technical field of network communication, and in particular to a rerouting method for an SDN network. Specifically, fast rerouting is realized by calculating the local shortest path of a failed link in the SDN network, so as to restore network service failure Methods. Background technique [0002] Software Defined Networking (SDN) is a new type of network technology. Its design concept is to separate the control plane of the network from the data forwarding plane and realize programmable control. The tightly coupled network architecture of traditional network devices is split into three separate architectures: application, control, and forwarding. The control function is transferred to the server, and the upper-layer application and the lower-layer forwarding facility are abstracted into multiple logical entities. The three most basic features of SDN are: centralized control, open interface and network virtualizat...

Claims

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Application Information

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IPC IPC(8): H04L12/725H04L12/733H04L45/122
Inventor 章小宁彭泽鑫杨宏伟叶颖科胡俊峰
Owner SHENZHEN NEW GREENNET TECH
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