Experimental Evaluation of a Multi-Domain Routing in SDN and its Inter-operability with Legacy Networks

Abhishek Thapa, Dilochan Karki, Roshan Guragain, Sandesh P Upadhyaya, Babu R. Dawadi, S. R. Joshi
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Abstract

Legacy IPv4 networks are strenuous to manage and operate. Network operators are in need to minimize the capital and operational expenditure of running network infrastructure. The implementation of Software-defined networking (SDN) addresses these issues by minimizing the expenditure in the long run. Legacy networks need to integrate with the SDN networks for the migration towards the fully functional SDN environment. In this paper, we compare the network performance of the legacy network with SDN for IP routing in order to determine the feasibility of an SDN deployment for the Internet service provider (ISP) network. The simulation of the network is performed in the Mininet test-bed and the network traffic is generated using distributed Internet traffic generator. Open network operating system is used as a controller in SDN environment in which SDN-IP application is running for IP routing. Round trip time, bandwidth, and packet transmission rate from both of these networks are first collected and then the comparison is done. We found that SDN-IP provides better bandwidth and latency compared to legacy routing. The experimental analysis of interoperability between SDN and legacy network shows that SDN implementation in production level carrier-grade ISP network is viable and progressive.
SDN中多域路由及其与传统网络互操作性的实验评估
传统的IPv4网络管理和操作都很费力。网络运营商需要将运行网络基础设施的资本和运营支出降至最低。软件定义网络(SDN)的实现通过最小化长期支出来解决这些问题。遗留网络需要与SDN网络集成,以便向功能齐全的SDN环境迁移。在本文中,我们比较了传统网络与SDN的网络性能,以确定在互联网服务提供商(ISP)网络中部署SDN的可行性。在Mininet测试台上对网络进行仿真,使用分布式Internet流量发生器生成网络流量。开放网络操作系统作为SDN环境的控制器,运行SDN-IP应用程序进行IP路由。首先收集这两个网络的往返时间、带宽和分组传输速率,然后进行比较。我们发现,与传统路由相比,SDN-IP提供更好的带宽和延迟。SDN与传统网络互操作性的实验分析表明,在生产级运营商级ISP网络中实现SDN是可行的和渐进的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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