Heterogeneous NetwOrk Policy Enforcement in data centers
Heterogeneous NetwOrk Policy Enforcement in data centers
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DOI：
10.23919/inm.2017.7987327
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发表时间：
2017-04
期刊：
影响因子：
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通讯作者：
Lin Cui;Fung Po Tso;Weijia Jia
中科院分区：
文献类型：
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作者：
Lin Cui;Fung Po Tso;Weijia Jia
随着网络功能虚拟化的出现，数据中心开始部署各种物理和虚拟形式的网络功能盒（Network Function Box，NFB），以将物理NFB提供的固有效率与虚拟NFB的敏捷性和灵活性相结合。然而，现有的方案限于专门考虑物理或虚拟NFB，这可能降低在其上运行的服务的性能效率。在本文中，我们提出了一个异构网络策略执行计划（HOPE），以克服这些挑战。提出了一种有效的算法，可以密切接近最佳延迟的NF服务链。实验结果还表明，HOPE可以在网络延迟方面优于贪婪算法25%，效率是朴素深度优先搜索算法的56倍。
With the emergence of network function virtualization, data center start to deploy a variety of network function boxes (NFBs) in both physical and virtual form factors in order to combines inherent efficiency offered by physical NFBs with the agility and flexibility of virtual ones. However, existing schemes are limited to exclusively consider physical or virtual NFBs, which may reduce the performance efficiency of services running atop. In this paper, we propose a Heterogeneous NetwOrk Policy Enforcement scheme (HOPE) to overcome these challenges. An efficient algorithm that can closely approximate optimal latency-wise NF service chaining is proposed. The experimental results have also shown that HOPE can outperform greedy algorithm by 25% in terms of network latency and is 56× more efficient than naive depth-first search algorithm.