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Orchestrating Network Functions in Software-Defined Networks
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DOI：10.1109/CC.2017.7868159.png)
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摘要
En 中文
Software-defined networking (SDN) enables third-part companies to participate in the network function innovations. A number of instances for one network function will inevitably co-exist in the network. Although some orchestration architecture has been proposed to chain network functions, rare works are focused on how to optimize this process. In this paper, we propose an optimized model for network function orchestration, function combination model (FCM). Our main contributions are as following. First, network functions are featured with a new abstraction, and are open to external providers. And FCM identifies network functions using unique type, and organizes their instances distributed over the network with the appropriate way. Second, with the specialized demands, we can combine function instances under the global network views, and formulate it into the problem of Boolean linear program (BLP). A simulated annealing algorithm is designed to approach optimal solution for this BLP. Finally, the numerical experiment demonstrates that our model can create outstanding composite schemas efficiently.
Keyword:
software-defined network
network function
function orchestrating
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