earticle

영어

Software Defined Network (SDN) is a new network architecture for designing, building, and managing networks that separates the networks control plane and forwarding plane to better support the scalability and innovation in a network infrastructure. The overall network performance of an application is mostly affected by the two major factors, bandwidth, and latency. Between each pair of network elements in network infrastructure, there may exist multiple paths connecting them with different properties. A traditional network does not take this knowledge into consideration and may result in sub-optimal performance of applications and underutilization of a network resource. This research proposes a concept of Application aware routing which could improve the overall performance of a network by categorizing the application in bandwidth oriented and latency oriented and allocate the separate route for each type of traffic based on the application preferences using Software defined network architecture and OpenFlow protocol. The research also proposes a design of an application aware network topology by using software defined network architecture which uses open flow protocol and open flow protocol based controller. Routes for the application packets are chosen based on the application type. To verify the feasibility and practical implementation of the proposed concept SDN topology is implemented in emulated environment using mininet.