【摘要】：隨著互聯(lián)網(wǎng)技術(shù)與應(yīng)用的快速發(fā)展,基于TCP/IP協(xié)議的傳統(tǒng)互聯(lián)網(wǎng)面臨著前所未有的挑戰(zhàn)。信息中心網(wǎng)絡(luò)(Information-Centric Networking,ICN)被普遍認(rèn)為是未來互聯(lián)網(wǎng)的范式,命名數(shù)據(jù)網(wǎng)絡(luò)(Named Data Networking,NDN)是其中最具代表性并且被廣泛研究的基礎(chǔ)架構(gòu)之一。目前,NDN中還存在很多挑戰(zhàn),數(shù)據(jù)面轉(zhuǎn)發(fā)效率是其中的一個關(guān)鍵問題。本文在NDN中引入了名字標(biāo)簽交換(Name Label Switching,NLS)域,以提高數(shù)據(jù)面的轉(zhuǎn)發(fā)效率。論文依托重慶市基礎(chǔ)科學(xué)與前沿技術(shù)研究重點(diǎn)基金的支持,以NLS為研究背景,研究和設(shè)計NDN中的標(biāo)簽分發(fā)協(xié)議,即名字標(biāo)簽分發(fā)協(xié)議(Name Label Distributed Protocol,NLDP),通過NLDP動態(tài)建立標(biāo)簽交換路徑,實現(xiàn)NLS域內(nèi)帶標(biāo)簽分組的轉(zhuǎn)發(fā)。本文的主要工作如下:首先,在理論研究的基礎(chǔ)上,論文仿真實現(xiàn)了NLS域。NLS域有兩種節(jié)點(diǎn):邊緣節(jié)點(diǎn)和核心節(jié)點(diǎn)。邊緣節(jié)點(diǎn)具有為網(wǎng)絡(luò)分組添加和去除標(biāo)簽以及緩存的功能;核心節(jié)點(diǎn)的功能是實現(xiàn)標(biāo)簽交換轉(zhuǎn)發(fā)分組。然后,論文提出了NLDP的總體設(shè)計方案。按功能來分,該方案主要分為十個子模塊,即路由模塊、定時器模塊、編解碼模塊、發(fā)現(xiàn)模塊、通知模塊、通告模塊、會話模塊、數(shù)據(jù)轉(zhuǎn)發(fā)模塊、接口模塊以及各種表項模塊。數(shù)據(jù)轉(zhuǎn)發(fā)模塊實現(xiàn)了靜態(tài)配置標(biāo)簽交換路徑時的NLS域。最后,對NS-3軟件模塊進(jìn)行擴(kuò)展,仿真實現(xiàn)NLDP和NLS域,并開發(fā)Wireshark插件用于解析NLDP的各類消息。評估NLDP的性能,仿真對比NLS與NDN的性能。用Wireshark抓取NLDP消息,驗證NLDP消息流程的正確性以及NLDP的穩(wěn)定性,并比較NDN和NLS對興趣包的處理時間。仿真結(jié)果表明NLS域中數(shù)據(jù)包的響應(yīng)時間減少了約37%,NLSR對興趣包的處理時間約是NDN的30%。
[Abstract]:With the rapid development of Internet technology and application, the traditional Internet based on TCP/IP protocol is facing unprecedented challenges. Information Center Network (Information-Centric Networking,ICN) is widely regarded as the paradigm of the future Internet, and named data Network (Named Data Networking,NDN) is one of the most representative and widely studied infrastructure. At present, there are still many challenges in NDN, and the efficiency of data surface forwarding is one of the key problems. In this paper, we introduce the name label exchange (Name Label Switching,NLS) field in NDN to improve the efficiency of data surface forwarding. Based on the support of Chongqing Foundation for basic Science and Frontier Technology Research, this paper studies and designs the label Distribution Protocol (Name Label Distributed Protocol,NLDP) in NDN with NLS as the research background. The label switching path is dynamically established by NLDP to realize the forwarding of tagged packets in NLS domain. The main work of this paper is as follows: firstly, on the basis of theoretical research, the paper simulates and implements the NLS domain. There are two kinds of nodes in the NLS domain: edge node and core node. The edge node has the function of adding and removing tags and caching for the network packet, and the core node's function is to implement label switching and forwarding packets. Then, the paper puts forward the overall design scheme of NLDP. According to the function, the scheme is divided into ten sub-modules, namely, routing module, timer module, codec module, discovery module, notification module, session module, data forwarding module, interface module and various table item modules. The data forwarding module implements the NLS domain when the label switch path is configured statically. Finally, the NS-3 software module is extended, the NLDP and NLS domain are simulated, and the Wireshark plug-in is developed to parse all kinds of NLDP messages. The performance of NLDP is evaluated and the performance of NLS and NDN is compared by simulation. The NLDP message is fetched by Wireshark to verify the correctness of NLDP message flow and the stability of NLDP, and the processing time of NDN and NLS to interest packet is compared. The simulation results show that the response time of the packet in the NLS domain is reduced by about 37% and the processing time of the interest packet is about 30% of that of the NDN.
【學(xué)位授予單位】：重慶郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TP393.04

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本文編號：2387869