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政大機構典藏 > 資訊學院 > 資訊科學系 > 期刊論文 > Item 140.119/120868

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/120868

Title:	Deploying Chains of Virtual Network Functions: On the Relation Between Link and Server Usage
Authors:	Kuo, Tung-Wei 郭桐惟 Liou, Bang-Heng Lin, Kate Ching-Ju Tsai, Ming-Jer
Contributors:	資科系
Keywords:	Network function virtualization;network function deployment;routing
Date:	2018-08
Issue Date:	2018-11-09 15:06:53 (UTC+8)
Abstract:	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.
Relation:	IEEE-ACM TRANSACTIONS ON NETWORKING, 26(4), 1562-1576
Data Type:	article
DOI 連結:	http://dx.doi.org/10.1109/TNET.2018.2842798
DOI:	10.1109/TNET.2018.2842798
Appears in Collections:	[資訊科學系] 期刊論文

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