SDN resource matching and service path discovering method based on rumor spreading mechanism

A technology of resource matching and path discovery, which is applied in and search field

Inactive Publication Date: 2015-11-04
INST OF INFORMATION ENG CHINESE ACAD OF SCI
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, how to define a service-aware differentiated strategy for different network applications and business requirements on the upper layer, and send it to the controller through the northbound interface is very important for the SDN northbound interface. The current research is in the active exploration stage

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  • SDN resource matching and service path discovering method based on rumor spreading mechanism
  • SDN resource matching and service path discovering method based on rumor spreading mechanism
  • SDN resource matching and service path discovering method based on rumor spreading mechanism

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Embodiment Construction

[0023] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described below through specific embodiments and accompanying drawings.

[0024] 1. Improvements to the existing SDN network architecture / structure

[0025] The SDN architecture was first proposed by the Open Networking Foundation (ONF), and has become a generally recognized architecture in academia and industry. In this typical architecture, SDN is divided into infrastructure layers from south to north , control layer and application layer. The SDN control-data-plane interface (CDPI for short) is used for communication between the infrastructure layer and the control layer, and the OpenFlow protocol is mainly used at present. The SDN northbound interface is responsible for communication between the control layer and the application layer, and APIs are provided to allow users to customize development according to ac...

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Abstract

The invention relates to an SDN resource matching and service path discovering method based on a rumor spreading mechanism. In the method, underlying physical network resources register access and control information including physical resource state and attribute in a virtual resource pool, so that virtual resources can be managed globally, and access interface can be called; when service resources make request at the same time, the rumor spreading mechanism of high priority is provided, and the network effectiveness and gain are improved; the distribution amount of node and chain resource request is detected in real time, and a node traversal search algorithm of high priority is used to determine an effective node candidate set that satisfy requirements for service resource; and according to the bandwidth requirements for inks at the two ends of node and the limitation of path hops, an effective path set is calculated, and thus, the whole process of resource search and service path discovery is realized. The method of the invention can improve the efficiency of service resource and path discovery, and improve the gain of the virtual network and the utilization rate of resources.

Description

technical field [0001] The invention belongs to the field of network technology, relates to the northbound interface of an SDN controller, and particularly relates to the problem of service deployment facing differentiated business requirements. In order to realize efficient matching and searching of service resources, a method for resource matching and path discovery based on a rumor propagation mechanism is proposed , this method only requires a relatively small number of nodes to participate in the communication, and can find the resources and links required by the service with a high probability. Background technique [0002] At the bottom layer of the current communication network, there are a large number of routers, switches, network terminals and other devices with different functions. These network devices are based on closed and proprietary internal interfaces, and run a large number of distributed protocols. Therefore, the traditional network Service deployment is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/46H04L29/08H04L12/703H04L12/825H04L12/927H04L45/28H04L47/80
Inventor 韩言妮于冰周旭徐震
Owner INST OF INFORMATION ENG CHINESE ACAD OF SCI
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