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Method and system for realizing content delivery network based on software defined network

A software-defined network and content distribution network technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve the problems of closed hardware specificity and management complexity of the bearer network.

Active Publication Date: 2016-05-11
ZTE CORP
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Problems solved by technology

[0010] In order to solve the above-mentioned problems, the present invention provides a method and system for implementing CDN based on SDN, which can effectively solve the problems faced by CDNs such as the closedness of the bearer network, the specificity of hardware, and the complexity of management

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  • Method and system for realizing content delivery network based on software defined network
  • Method and system for realizing content delivery network based on software defined network

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Embodiment Construction

[0069] In order to make the purpose, technical solution and advantages of the application clearer, the embodiments of the application will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0070] figure 1 It is a flow chart of the method for implementing CDN based on SDN in the present invention, such as figure 1 shown, including:

[0071] Add CDN application functions at the SDN application layer; add CDN control functions at the SDN control layer; add CDN network entity resources at the SDN data forwarding layer.

[0072] It should be noted that in the solution based on SDN and NFV, adding network entity resources at the data forwarding layer can specifically add new hardware resources of the X86 general architecture and perform network programming based on the general ha...

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Abstract

The invention discloses a method and a system for realizing a content delivery network (CDN) based on a software defined network (SDN). The method comprises the steps of respectively adding an application function, a control function and a network entity resource of the CDN into an application layer, a control layer and a data forwarding layer of the SDN; when a CDN application request is received, generating resource requirement and service orchestration information by the application layer of the SDN according to the CDN application request, transmitting a reserving request of the resource required by the CDN application to the SDN control layer so that the SDN control layer allocates the resource required by the CDN application, and generating a data transmission content routing table according to network load balance and a path strategy, furthermore generating an L2 / L3 forwarding table, and transmitting to the data forwarding layer; and when the data forwarding layer of the SDN receives a content dispensing / delivery operation request, performing related operation of the CDN service according to the L2 / L3 forwarding table. According to the method and the system, the system function of the CDN is realized based on the SDN, thereby effectively settling bearing network closure, hardware dedication and management problem in the CDN, and realizing reasonable selection for CDN application network resource, engine and forwarding path.

Description

technical field [0001] The present application relates to content distribution technology, especially a method and system for implementing a content distribution network (CDN) based on a software-defined network (SDN) in a tightly coupled mode. Background technique [0002] SDN is a new network technology that has emerged in recent years. Its main features are separation of control and forwarding, open and programmable network, and separation of software and hardware. SDN enables traditional communication network equipment to be liberated from exclusive hardware binding, develop towards a general hardware platform plus custom software, and realize network function virtualization, network management simplification, and network deployment automation through open programming interfaces , thus greatly saving equipment cost, labor cost and deployment time compared with traditional network function realization and engineering implementation. Divided by architecture level, SDN is ...

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Application Information

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IPC IPC(8): H04L12/741H04L12/803H04L45/42H04L45/74H04L47/30H04L47/20H04L47/80
CPCH04L47/125H04L47/20H04L47/72H04L47/803H04L45/74591H04L47/83H04L45/54H04L47/30H04L41/084H04L49/60
Inventor 王东
Owner ZTE CORP
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