Research On Cooperation Anycast Based Overlay Network And Key Technologies

With the development of the Internet, the new mode of communication for the next generation network is proposed, that is anycast. There is a series of problems for anycast, which makes it can’t be deployed and applied widely. With the advantages of application anycast layer and network anycast layer respectively, the idea of overlay network is applied to anycast, put forward to the concept of cooperation anycast and some key issues are studied:(1) It is proposed the cooperation anycast based on overlay network architecture (OCAN), and the problems of anycast service domain deciding, agent node deployment, virtual links selection, head node election and convergence layer topology optimization are solved.(2)The cooperation anycast mechanism based on OCAN is given a described and verified using Petri network theory.(3)The OCAN routing mechanism is studied and presented the model of optimal path selection and path adjustment dynamically which includes intra-domain and inter-domain routing in cooperation anycast, and given the solutions.(3)The problem of cross service in anycast is studied, proposed the solution to this problem and given the optimization algorithm respectively.