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    政大機構典藏 > 理學院 > 資訊科學系 > 期刊論文 >  Item 140.119/120868
    請使用永久網址來引用或連結此文件: http://nccur.lib.nccu.edu.tw/handle/140.119/120868

    題名: Deploying Chains of Virtual Network Functions: On the Relation Between Link and Server Usage
    作者: Kuo, Tung-Wei
    Liou, Bang-Heng
    Lin, Kate Ching-Ju
    Tsai, Ming-Jer
    貢獻者: 資科系
    關鍵詞: Network function virtualization;network function deployment;routing
    日期: 2018-08
    上傳時間: 2018-11-09 15:06:53 (UTC+8)
    摘要: Recently, network function virtualization has been proposed to transform from network hardware appliances to software middleboxes. Normally, a demand needs to invoke several virtual network functions (VNFs) following the order determined by the service chain along a routing path. In this paper, we study the joint problem of the VNF placement and path selection to better utilize the network. We discover that the relation between the link and server usage plays a crucial role in the problem. Inspired by stress testing, we first propose a systematic way to elastically tune the link and server usage of each demand based on the network status and properties of demands. In particular, we compute a proper routing path length, and decide, for each VNF in the service chain, whether to use additional server resources or to reuse resources provided by existing servers. We then propose a chain deployment algorithm that follows the guidance of this link and server usage. Via simulations, we show that our design effectively adapts resource allocation to network dynamics and, hence, serves more demands than other heuristics.
    資料類型: article
    DOI 連結: http://dx.doi.org/10.1109/TNET.2018.2842798
    DOI: 10.1109/TNET.2018.2842798
    顯示於類別:[資訊科學系] 期刊論文


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