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Software Defined Networking (SDN) separates the control plane from the data plane to ease network management and provide flexibility in packet routing. The control plane interacts with the data plane through the forwarding tables, usually including a flow table and a group table, at each switch. Due to high cost and power consumption of Ternary Content Addressable Memory (TCAM), commodity switches...
Traditional networks rely on aggregate routing and decentralized control to achieve scalability. On the contrary, software-defined networks achieve near optimal network performance and policy-based management through per-flow routing and centralized control, which however face scalability challenge due to (1) limited TCAM and on-die memory for storing the forwarding table and (2) per-flow communication/computation...
Software Defined Network (SDN) is an architectural trend in networking towards the use of the centralized controller to get better performance. However, due to limited resources (especially limited flow table size and controller processing capacity), it may result in low-throughput and long-delay for a set of bursty flows. In this paper, we first combine the flow table size constraint and the controller...
Software-defined networking (SDN) decouples the network into different layers, bringing many new attributes over traditional network. But SDN also comes with its own set of challenges and limitations. Combining the mature traditional network with new benefits of SDN, hybrid SDN has attracted significant attention. On the other hand, segment routing keeps partial routing information within packet header...
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