The Key Technology Research On OpenFlow-Based Future Network Architecture

The architecture of the Internet was originally designed in the sixty or seventy's in twentieth Century,with IP as the core.In recent years,the Internet has been emerging,the size,function and performance of the Internet is increasing,the Internet is facing the challenge of verification,including:network equipment,network address is serious enough,it is difficult to large-scale expansion;network bandwidth and performance can not meet the needs of users.In order to solve the problem of the existing network fundamentally,we must redefine the network architecture.There are two main types of popular network architecture:Software Defined Networking(SDN)and Content Centric Networking(CCN).SDN proposes a new type of network architecture with the separation of controlling and forwarding.The network technology not only increases the flexibility of the controlling of network equipment,but also reduces the cost all the network information.CCN see all the things in the network as the information,it is different from the traditional network,which has the characteristics of the host-to-host connectioning.The CCN sees the contents as the core,and expresses each information through the contents of the name.In this paper,Author analyzes the main technology of the future network,including the technology of SDN controlling plane and forwarding plane;OpenFlow protocol;CCN architecture and CCN caching strategy.The main work of this paper is to analyze the features of SDN network architecture,which is based on the network integration;and then analyzes the characteristics of the network architecture.In this paper the functions of the network architecture are summarized as three parties:analyzing the CCN data packets,network caching,forwarding based on PIT,FIB,CS tables,The key components of the network architecture are designed into fives parties,including CCN controller,OpenFlow switch nodes,content caching nodes,content requesting nodes and content providing nodes.At the end of this paper,the author builds the experimental test platform,and tests the CCN key module in the use of Open vSwitch Mininet and other tools.It verifies the feasibility and practicality of the network architecture through the following three projects:network connectivity,topology discovery,content forwarding.