关于软件定义和以信息为中心的网络范例的集成

Amr H. El Mougy
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引用次数: 8

摘要

信息中心网络(ICN)是一种通信范式,它承诺将Internet从主机对主机通信网络转变为能够支持用户未来需求的海量信息传递系统。ICNs基于三个主要概念:内容转发、网络内缓存和组播。为了实现这三个关键概念,软件定义网络(SDN)已经成为一个重要的潜在候选,因为它能够在一个被称为控制器的可重新编程设备中实现所有网络智能。然而,这两种网络范例的集成带来了许多挑战。本文研究了这些挑战,并强调了需要研究界付出更多努力的关键领域。特别地,本文侧重于将SDN纳入ICN体系结构所需的架构修改,包括对流行的OpenFlow协议的必要修改。此外,本文还研究了SDN和ICN集成带来的几个实现挑战,例如需要一个可扩展的分布式SDN控制,以满足动态用户请求的高响应性,以及需要为内容提供语义命名方案,以便为用户指定其请求提供很大程度的表达性。本文调查了解决这些挑战的关键研究工作,并强调了其中一些有希望的解决方案和开放的研究问题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On the integration of software-defined and information-centric networking paradigms
Information-Centric Networks (ICN) is a communication paradigm that promises to transfer the Internet from a host-to-host communication network to a massive information delivery system, capable of supporting the future needs of the users. ICNs are based on three main concepts: content forwarding, in-network caching, and multicasting. To realize these three key concepts, Software-Defined Networking (SDN) has emerged as an important potential candidate, due to its ability to implement all network intelligence in a reprogrammable device known as the controller. However, the integration of these two networking paradigms presents many challenges. This paper studies these challenges and highlights key areas where more effort is needed from the research community. Particularly, the paper focuses on the architectural modifications necessary to incorporate SDN in ICN architectures, including the necessary modifications to the popular OpenFlow protocol. In addition, the paper studies several implementation challenges arising from the integration of SDN and ICN such as the need for a scalable and distributed SDN control that is highly responsive in meeting dynamic user requests, and the need for a semantic naming scheme for content that provides the users with a large degree of expressiveness in specifying their requests. The paper surveys key research efforts that address these challenges and highlights some promising solutions and open research problems therein.
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