Research And Design Of Network Resources Virtualization Based On SDN

In the current multi-service networks, how to ensure the transmission quality of different services has come up to the majority of researchers as a new problem. The emergence of network virtualization solved this problem and provided convenience for the study of new Internet technologies and new reformation of internet infrastructure. Specifically, the network virtualization refers to get abstraction of basic logic network on physical networks through network virtualization technology, getting out from the shackles of the physical device. Then by logical segmentation and isolation, allowing multiple heterogeneous virtual network structure coexist in the same physical infrastructure. Each virtual network may use independent network protocol, and can be adjusted according to user needs network status, which can achieve flexible resource allocation and scheduling, improving basic network resource utilization and service quality, reducing network operation and maintenance costs. Network virtualization brings flexibility to the above, but also challenges to the effective management of network resources.As a new network architecture implementation, SDN has brought new vitality and challenges to the traditional network o The basic idea of separation of control and forwarding enables network control and management more efficient and flexible. Using SDN idea to implementation network resources virtualization, is the main content of this thesis.Based on the study of the national863project "Innovative Architecture for Merging Three Networks", this thesis presents a approach based on SDN network resource virtualization system design, and the partial implementation of the project in the previous basis. The goal of the project in order to achieve the merging of three networks, established based on SDN virtualization platform, provides support for multi-service and multi-protocol. This thesis introduces the network resource virtualization and SDN-related key technologies. Then it describes the overall design of the SDN-based network resource virtualization system. Then introduced the detailed design and implementation of SDN control plane and data plane of the system. Finally, part of the functions of the system were tested and makes a simple summary of the full text.