期刊名称：International Journal of Computer Networks & Communications
印刷版ISSN：0975-2293
电子版ISSN：0974-9322
出版年度：2019
卷号：11
期号：2
页码：1-15
DOI：10.5121/ijcnc.2019.11204
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：NFV-based network implements a variety of network functions with software on general-purpose serversand this allows the network operator to select any capacity and location of network functions without anyphysical constraints. It is essential for economical NFV-based network design to determine the place whereeach network function should be located in the network and what its capacity should be. The authorsproposed an algorithm of virtual routing function allocation in the NFV-based network for minimizing thenetwork cost and provided effective allocation guidelines for virtual routing functions. This paper proposes the deployment algorithm of virtual firewall function in addition to virtual routingfunction for minimizing the network cost. Our evaluation results have revealed the following: (1) Installinga packet filtering function, which is a part of the firewall function, in the sending-side area additionally canreduce wasteful transit bandwidth and routing processing and thereby reduce the network cost. (2) Thegreater the number of packets filtered by packet filtering function in the sending-side area, the more thereduction of network cost is increased. (3) The greater the bandwidth cost relative to the routing functioncost, the greater the effect of statistical multiplexing on reducing the network cost. (4) The proposedalgorithm would be approaching about 95% of the deployment with the optimal solution..
关键词：NFV; resource allocation; the virtual routing function; minimum total network cost
