The Research Of Hybrid IP/SDN Network Technology

In recent years, with the rapid growth of the mobile Internet, Internet of things, big data and other services, the need of network resources has been exploding. However, the structure of traditional network becomes more and more complicated. The network equipments are isolated and the interfaces are relatively closed, which increases the difficulty of network management and results in the difficulty to adapt to the flexibility of resource scheduling and robust requirements from current network business. Under such background, Software Defined Network(SDN) theory is raised and widely accepted. In SDN, the control layer is centralized in logic, which is able to realize flexibility of resource scheduling and programmable control with more open interfaces. The underlying hardware will become transparent to network managers by the standardization of south interface.As a new network framework and management type, how to combine SDN with the traditional network in the application process is widely discussed. Due to the fact that logic in SDN is centralized in the control layer, the issues on the ways of the interaction between SDN capable switches and traditional network equipments, the updating and maintaining of routing forwarding information are concerned. To the SDN self-realization mode, considering the risk of the robust and delay for the centralized controlling of the entire network, some research supposes that majority traffic can be controlled in traditional way and the rest minor traffic should be under SDN controlling for flexile dynamic needs.In this paper, we will research the topology-based hybrid SDN and class-based hybrid SDN scenarios. For each scenario, we will give the scenario description and realization of routing platform. Based on the open source controller POX, we develop routing platform. We also use the open source routing engine Quagga to realize the analysis of protocol message. For the two scenarios, we design the overall architecture. In this paper, first of all, we design the entire network framework for hybrid scenarios and dissect key details. Then a fully introduction on entire platform implementation process will be disclosed, given implemented module structure and implemented details for each module. Meanwhile, in view of the different hybrid model,we use virtualization technology to build the simulation, then we test environment and realize routing functions. The testing result show that in the two scenarios, routing platform can work normally and the hosts can communicate successfully. In the end, a summary for the whole paper will be presented and the goal for next stage research will be pointed out.