毕业论文-基于OSPF的内容网络路由框架的设计与实现.docx

基于OSPF的内容网络路由框架的设计与实现 摘 要： Content-centric Networking(CCN，即内容网络)由PARC的Van Jacobson在2009年提出。又称为Named Data Networking（NDN，命名数据网络）是一个全新的体系结构,但他的设计原理都来源于今天的互联网的成功,改进了我们对当前的网络体系结构的的理解的程度和局限性。 由于设计和实现NDN网络是一个十分庞大的工程，本文将大致介绍NDN网络的背景与发展并具体描述在计算机上实现一个简单基于OSPF协议NDN网络路由框架的设计和实现的其中三个部分的内容：实现环境及载体的架构、内容数据的命名匹配和基于以上内容对OSPF动态路由协议进行的相关的修改。 我将对NDN网络的背景和发展进行阐述。为了将NDN（命名数据网络）付诸于实践，我们要架构一个基于OSPF动态路由协议的内容网络。作为实现一切的根本，我们需要使用BIRD动态路由守护进程作。并详细阐述如何使用虚拟机和Dynamips模拟器实现一个可供NDN网络运行的载体。为了让其成为一个真正的“内容”网络，必须要对文件进行标识和定位，每一个文件都必须要有自己独一无二的标志，仅仅一个文件名是完全不足以满足这种需求的。由此，我们来使用SHA1算法来帮我们达到这个目的。并给出其实现的伪代码。我对OSPF协议的修改进行设计，并定义两种新的OSPF数据包类型来实现主机与路由器节点的匹配和内容与NDN网络中的主机的匹配。 关 键 词： CCN内容网络 NDN命名数据网络 BIRD动态路由守护进程 SHA1安全哈希算法 OSPF协议  Design and implementation of Content-centric Networking framework based on the OSPF protocol ABSTRACT： Content-centric Networking (CCN, namely Content network) was proposed by the Van Jacobson PARC in 2009. Also called Named Data Networking (NDN, Named Data Networking) is a new system structure, but his design principle of the Internet comes from the success of current internet, make improvements to our current network system structure of the understanding of the degree and limitations. Due to design and realize the NDN network is a very large engineering, this paper will be roughly introduces the background and development of NDN and give a specific description of three parts in how to Design and implement a simple Content-centric Networking based on the OSPF protocol in a computer: the realization environment and carrier architecture, naming and matching of content , modification in OSPF dynamic routing protocol based on the above content. I will introduce NDN network background and development in this paper.In order to implement a NDN (Named Data Networking), we have to establish a dynamic routing protocol based on the content of OSPF network. As the fundamental opportunity for all, we need to use BIRD dynamic routing daemon. This paper discusses how to use and detailed virtual machi