Visualization Techonology Based On The New Service Model And The Design Of Security Modules In The Soft-Defined Network

In recent years, with the Soft Defined Network (SDN) architecture thought gradually into the traditional network, it provides a new opportunity for wide deployment of intelligent services with great capacity in optical network. Especially, in the intra-data center optical network, how to use the flexible programmable mechanism of SDN to realize the joint scheduling and global optimization of data center applications and the underlying network resources has become an important opportunity. At the same time, how to overcome the security problems brought by the centralized control in the SDN architecture to provide users with efficient, fast, safe service model becomes the research focus.Based on the simulation platform of software-defined cross layer optical network, this paper has researched the introduction of the time factor of new service types and realized the visualization interface with the relative visualization technology. In addition, security proxy of controller in single and multi domain has been proposed aiming at the security thread in application layer, controlling layer and forwarding layer. Based on the proxy theory, the control plane implemented with Dual-PCE and OpenFlow Controller has been designed in view of the security problem caused by the heavy service traffic of centralized controller. Detailed achievements are as follows:1)With analyzing the service requirements based on the cross stratum resources optimization architecture in detail and using the MVC thought and visualization technology in each layer, the performance of the cross stratum optimization simulation platform has been verifVied with the realization of the visible interface.2) Aiming at the main security thread in SDN, combining with the current security strategies and modules, this paper gives the security proxy of controller in single and multi domain.3) After analyzing and locating the current security problems in software defined optical network, based on the controller load balancing algorithm, the control plane implemented with Dual-PCE and OpenFlow Controller (DPOC) in flexi-grid optical networks has been developed. And the numeric results show that when the traffic intensity is over400Erlang, the blocking probability declines about25%with comparing the current controller module.