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This paper proposes a scheme to reduce the number of flow entries permanently stored in an OpenFlow switch and the number of configuration messages from a controller in a software-defined network (SDN). In an SDN, a flow table in an OpenFlow switch is used to instruct packets. The flow table consists of flow entries decided by the controller. A flow request is sent from the OpenFlow switch to the...
A switch in a software-defined network (SDN) uses a flow table for packet forwarding. The flow table consists of flow entries decided by a controller. As user requests with a variety of data types have been dramatically increasing, a controller's CPU is overloaded to process those requests. The users may not obtain real-time data. Furthermore, the control plane might be overflowed by OpenFlow messages...
The fine two-phase routing (F-TPR) scheme, an IP finely-distributed load-balanced routing scheme based on two-phase routing over shortest paths, was previously presented to improve routing performances. F-TPR distributes traffic from a source node to intermediate nodes simply by using IP tunnels. F-TPR provides comparable routing performance to the sophisticated traffic engineering (TE) scheme of...
This paper proposes PCE-based inter-domain network architecture, and verifies its feasibility through implementation and experiments. PCEP is implemented between PCE and management system, and inter-domain LSPs are successfully established.
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