An SDN based intra-domain routing and resource management model

Software Defined Networking (SDN) has become a promising network architecture that simplifies the network control, management and deployment of differentiated services. SDN architecture decouples control and data planes. Control functions are moved to a logically centralized entity called controller. The underlying infrastructure solely performs forwarding. Most of the previous studies focus on using SDN in data centers. In this paper 1, we propose scalable routing and resource management model for SDN based intra-domain networks. To virtualize the underlying network, we use pre-established multi-paths (PMP) between each ingress-egress switch. SDN-Controller performs admission control, routing, load balancing and path resizing functions based on these paths. The experimental results show that the proposed model significantly improves routing and signaling scalability, network resource utilization and decreases admission control time.