本文選題：信息中心網(wǎng)絡(luò)　切入點(diǎn)：ICN　出處：《北京郵電大學(xué)》2014年碩士論文

【摘要】：隨著互聯(lián)網(wǎng)的快速發(fā)展,網(wǎng)絡(luò)呈現(xiàn)出以信息內(nèi)容為中心的發(fā)展趨勢(shì)。在社交網(wǎng)絡(luò)、云存儲(chǔ)、內(nèi)容分享熱潮的推動(dòng)之下,網(wǎng)絡(luò)在大多數(shù)時(shí)候都工作在支撐信息的存取和分發(fā)上。根據(jù)思科的預(yù)測(cè),到2015年全球的IP數(shù)據(jù)流量將達(dá)到每年966EB (1EB等于1000000TB),這意味著網(wǎng)絡(luò)正面臨超大流量信息分發(fā)的挑戰(zhàn)。然而,傳統(tǒng)互聯(lián)網(wǎng)在本質(zhì)上使用的是一種面向位置的網(wǎng)絡(luò)結(jié)構(gòu),這種網(wǎng)絡(luò)結(jié)構(gòu)在處理以信息中心的網(wǎng)絡(luò)任務(wù)時(shí)有著天生的不足。 信息中心網(wǎng)絡(luò)(Information-Centric Network, ICN),或稱為以信息為中心的網(wǎng)絡(luò)。ICN完全以信息為中心,重點(diǎn)關(guān)注網(wǎng)絡(luò)中信息的分布、查找和傳輸,而不是目標(biāo)主機(jī)的可連接性和主機(jī)之間的對(duì)話維護(hù)。信息中心網(wǎng)絡(luò)不需要用戶在獲取信息前知道信息所在的位置；同時(shí),信息中心網(wǎng)絡(luò)能夠利用信息的命名和網(wǎng)內(nèi)緩存來提升網(wǎng)絡(luò)的傳輸效率和健壯性。因此,信息中心網(wǎng)絡(luò)對(duì)需要處理繁多與信息有關(guān)的任務(wù)的當(dāng)前網(wǎng)絡(luò)具有著重要意義。另外一方面,SDN(軟件定義網(wǎng)絡(luò))擁有強(qiáng)大的對(duì)網(wǎng)絡(luò)進(jìn)行編程并且是動(dòng)態(tài)管理的能力,它的很多特點(diǎn)均可以滿足信息中心網(wǎng)絡(luò)的需要。因此基于SDN來研究信息中心網(wǎng)絡(luò)具有十分重要的意義。 本文首先分析了信息中心網(wǎng)絡(luò)模型的主要特點(diǎn),并對(duì)目前學(xué)術(shù)界受關(guān)注較高的CCN、PSIRP等ICN模型進(jìn)行了分析；介紹了SDN技術(shù),包括其優(yōu)點(diǎn)以及SDN技術(shù)能夠?yàn)镮CN模型的建立所帶來的優(yōu)勢(shì)；并總結(jié)了現(xiàn)有的根據(jù)SDN實(shí)現(xiàn)ICN的方法的要點(diǎn)。 作為主要研究工作之一,本文在第三章論述了所設(shè)計(jì)的一種基于SDN的信息中心網(wǎng)絡(luò)模型,簡(jiǎn)稱ICN/SDN模型,其中包括模型的框架設(shè)計(jì)、消息及其交換方式的設(shè)計(jì)、關(guān)鍵組件及其工作原理的設(shè)計(jì)等等。該模型參考了CCN模型的設(shè)計(jì),包含了ICN模型所應(yīng)該具備的最主要的三個(gè)功能：內(nèi)容以名稱為標(biāo)識(shí)、基于名稱的路由方式、網(wǎng)內(nèi)緩存。 作為主要研究工作之二,本文在第四章論述了所實(shí)現(xiàn)的ICN/SDN模型的一個(gè)簡(jiǎn)化版實(shí)例——ICN/SDN原型,該原型實(shí)現(xiàn)以網(wǎng)內(nèi)緩存功能的實(shí)現(xiàn)為重點(diǎn),其中包括簡(jiǎn)單的協(xié)議消息ICNP的實(shí)現(xiàn)、節(jié)點(diǎn)的實(shí)現(xiàn)、關(guān)鍵功能的實(shí)現(xiàn),實(shí)現(xiàn)過程中使用到了Scapy、Pyretic等程序庫,并在末尾使用Mininet仿真平臺(tái)進(jìn)行了相關(guān)的實(shí)驗(yàn)并對(duì)實(shí)驗(yàn)結(jié)果進(jìn)行了評(píng)估。
[Abstract]:With the rapid development of the Internet, the Internet is taking the information content as the center. Driven by the social network, cloud storage, content sharing, Most of the time, networks work to support access and distribution of information. According to Cisco's projections, global IP data traffic will reach 1 EB per year by 2015, equal to 1000000 TBU, which means the network is facing the challenge of distributing information with very large traffic. In essence, the traditional Internet uses a location-oriented network structure, which is inherently inadequate in dealing with network tasks centered on information. Information Center Network Information-Centric Network (ICNN), or information-centric network. ICN is completely information-centric, focusing on the distribution, search and transmission of information in the network. It is not the connectivity of the target host and the maintenance of the dialogue between the hosts. The information center network does not require the user to know the location of the information before obtaining the information; at the same time, Information center networks can use the naming and cache of information to improve the transmission efficiency and robustness of the network. Information center networks are important for current networks that need to handle a wide range of information-related tasks. On the other hand, SDN (Software defined Network) has a strong ability to program and manage networks dynamically. Many of its characteristics can meet the needs of the information center network, so it is very important to study the information center network based on SDN. In this paper, the main characteristics of the information center network model are analyzed, and the ICN models, such as CCNS PSIRP, which are paid more attention by the academic circles at present, are analyzed, and the SDN technology is introduced. It includes its advantages and the advantages that SDN technology can bring to the establishment of ICN model, and summarizes the main points of the existing methods to implement ICN based on SDN. As one of the main research work, in the third chapter, this paper discusses a kind of information center network model based on SDN, which is called ICN/SDN model, including the frame design of the model, the design of message and its exchange mode. This model refers to the design of CCN model and includes three main functions that the ICN model should have: the content is identified by the name, the name-based routing method, and the cache in the network. As one of the main research work, in chapter 4, this paper discusses a simplified version of the ICN/SDN model, the prototype of ICN / SDN, which focuses on the implementation of the cache function in the network, including the implementation of the simple protocol message ICNP. The realization of node and the realization of key functions are realized by using ScapyPyretic and other program libraries. At the end of this paper, the related experiments are carried out by using Mininet simulation platform and the experimental results are evaluated.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP393.02

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本文編號(hào)：1656708