Performance analysis of OSPF and hybrid networks

Abstract

Software Defined Network (SDN) for large-scale IP provider network is an open issue and different solutions were proposed. However, the hybrid IP networks in which both distributed and centralized approach provide centralization of SDN and reliability of distributed networks. The common approach in which SDN controls the prioritized traffic and OSPF (Open Shortest Path First) guarantees the operation of traffic. In this research, we propose the SDN segregation, which maintain central management over dispersed routing control. A given topology is split in some fields with OpenFlow enabled switches as in between nodes. OSPF enabled router triggered updates to other routers in other field via SDN switches. The centralized controller defines how two OSPF routers observe each other. There will be a tradeoff between central control of SDN and fault tolerance capability of OSPF. As we increase SDN nodes control will increase and fault tolerance capacity of overall network decreases. The novelty of research work for balanced topology segregation also offers the models for network management. To show the enhancement provided by hybrid network over routing protocol deployment we have deployed separate test beds for routing protocol and proposed hybrid network.