Research And Implementation Of Resource Virtualization On S-PTN Network

Enlargement of the scale of the existing network, the continuous expansion of various business, and a variety of new businesses such as triple play, IoT, cloud computing and so on, all of this put forward new demands on the current network. It makes the traditional network more and more unsuitable for the current development of the Internet. Resource Virtualization is the key to slove this problem. It will abstract the underlying physical network resources, and further work is combinations and isolation. Then meet the resources need to build networks, and implements multiple virtual networks to coexist on the same underlying physical network.Current network face increasing pressure from new business and network operation and maintenance. There is the further evolution of demand. SDN is an innovative network architecture. Its forwarding plane and control plane separation of thought and programmable features that make network management more flexible. S-PTN is formed by combining SDN architecture with PTN network that is a good advantage evolution. It can implement the the development of network and the simplification of maintenance. Also, due to the centralized control features of S-PTN network and the centralized control features of resource virtualization fit perfectly, that makes the S-PTN network is suitable for network resource virtualization.Mapping algorithm is one of the core issues of resource virtualization, and It solves is how to correctly and efficiently map a virtual network to a physical network. Mapping algorithm determines the resource utilization.The content of this article is how to implement resource virtualization on the S-PTN network, focuses on the following three aspects:Firstly, there is a mapping problem of the low success rate of traditional mapping algorithm, and the underlying resource utilization is not high. This paper analyses the advantages and disadvantages of one and two order mapping algorithm, and propose an one order mapping algorithm based on topological perception and distance. The distance between nodes is used as a reference factor in this mapping algorithm, and map to the same region in the underlying physical network which avoid wasting network resources.Secondly, in this paper studies the S-PTN network architecture and Opendaylight controller technology. And this paper propose a virtual network mapping system in Opendaylight controller. The virtual network mapping system implement NB API which provide services.Thirdly,this paper analyses the actual needs of test of NB API. The testing tool is design to test the function of NB API, its development on the basis of the software of RESTClient. The tool implement batch processing, and can provide further process to the data of return.