Study Of Construction Of Virtual Network Based On Atomic Capability Under Reconfigurable Network

Through the creation of diverse, flexible and high controllable virtual networks, the technology of NFV(Network Function Virtualization) has made the deployment for a variety of new service possible; Through the reconstruction of the network function, the reconfigurable technology can support a variety of new service deployment, further providing a solution to the demand of increasingly complex, diversified business which traditional network is difficult to deploy. The new reconfigurable network based on atomic capability provides a new method to achieve network virtualization, At the same time, it also leads to some new challenges, due to the changeability in the type of controled physical network resources.This paper focuses on the construction of virtual network under reconfigurable network based on atomic capability, the method of data isolation during data plane virtualization, and ensuring the system consistency. The main work and research achievements are as follows:1) Basing on the research of reconfigurable network architecture, we propose a procedure of the construction of virtual network based on atomic capability under reconfigurable network. During the procedure, the high-level atomic sevice model will be converted to many corresponding low-level data models which are combined by many atomic capabilities.2) Studying the method of data forwarding plane isolation during the network virtualization, and proposing a data isolation method, which runs on a single Linux kernal, to realize multiple virtual nodes. This method uses Click configuration to implement the data forwarding function of multiple virtual methods nodes, and each virtual network’s data is isolated.3) Proposing a method to ensure the consistency of the system during the reconfiguration process of network virtualization based on atomic capability. This method defines the state of atomic capability and its port for overcoming the problem that the inconsistency between the actual state of atomic capability and the state recorded by system during virtual network reconfiguration process, through real-time feedbacking to system.4) Setting Click configuration on the physical nodes to build a virtual network for measurement and validation of different virtual network isolation.