使用开源工具进行多层网络规划和运营(教程)

J. Izquierdo-Zaragoza, P. Pavón-Mariño
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引用次数: 0

摘要

网络技术的不断进步对网络架构师提出了挑战,他们试图预测哪些新技术值得资源和投资,哪些现有的基础设施需要保留,以及它们在迁移过程中的相互作用。此外,在过去几年中,诸如能源效率、灾难恢复能力或SDN/NFV等主题正在被深入考虑和调查。因此,研发工作带来了许多解决方案。不幸的是,运营商通常很难在他们的网络上重现这样的结果,这可能是由于行业中使用的商业规划工具和学术工具之间的理念不同。向开源网络规划观点的范式转变可以强调同行评议和透明度的力量,从而以更快的速度和更低的成本促进创新。本教程将重点介绍Net2Plan (http://www.net2plan.com),这是一个由作者开发的开源工具,自2012年以来在几门课程(>200名学生)和研究项目中积极使用。Net2Plan建立在与技术无关的多层网络表示的基础上,旨在帮助用户评估内置或原始用户开发的规划算法。此外,用户可以使用报告或模拟工具来分析他们的设计,例如网络弹性、连接准入控制、时变流量资源分配,甚至是它们的组合。此外,Net2Plan允许应用算法编排openflow支持的网络与OpenDaylight的北向接口交互。在整个教程中,与会者将有机会了解Net2Plan的主要功能,并发现它的一些应用程序。在本教程结束时,与会者将通过基于IP-over-WDM网络的密集实践案例研究进行指导,例如,包括使用内置或用户开发的算法的网络尺寸,WDM线路工程(例如,EDFA放置,损伤计算),不同故障模式下的自动可用性计算,以及时变流量影响的自动模拟和节能关闭技术的评估。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Multilayer network planning and operation using open-source tools (Tutorial)
Continuous advances in network technologies challenge network architects in their attempt to foresee what new technologies deserve resources and investments, what existing infrastructure to keep, and their interplay during migration processes. Moreover, topics like energy efficiency, disaster resilience, or SDN/NFV are being intensively considered and investigated during the last years. As a result, R&D efforts have led to a number of solutions. Unfortunately, it is often difficult for operators to reproduce such results on their networks, maybe due to divergent philosophies between commercial planning tools used in the industry and academic tools. A paradigm shift to an open-source view of network planning could emphasize the power of peer-review and transparency to promote innovation at an accelerated pace and lower cost. This tutorial would focus on Net2Plan (http://www.net2plan.com), an open-source tool developed by the authors, and actively used in several courses (>200 students) and research projects since 2012. Built on top of a technology-agnostic multilayer network representation, Net2Plan is designed to assist users in the evaluation of built-in or original user-developed planning algorithms. In addition, users can analyze their designs using either reports or a simulation tool for in-operation scenarios like network resilience, connection-admission-control, time-varying traffic resource allocation, or even combinations of them. Besides, Net2Plan permits applying algorithms to orchestrate OpenFlow-enabled networks interacting with the northbound interface of OpenDaylight. Throughout the tutorial, attendees would have the opportunity to learn about the main features of Net2Plan, also discovering some of its applications. At the end of this tutorial, attendees would be guided through an intensive hands-on case study based on an IP-over-WDM network, e.g., including network dimensioning using built-in or user-developed algorithms, WDM line engineering (e.g., EDFA placement, impairment computations), automatic availability calculation under different failure patterns, and automatic simulation of the effects of time-varying traffic and assessment of energy-efficient switch-off techniques.
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