【摘要】：隨著網(wǎng)絡(luò)技術(shù)的快速發(fā)展,現(xiàn)有的網(wǎng)絡(luò)技術(shù)很難跟上人們對(duì)于網(wǎng)絡(luò)的更快速、更便捷、更安全的要求。為此,各式各樣的網(wǎng)絡(luò)新技術(shù)也層出不窮。向量網(wǎng)絡(luò)技術(shù)便是在此背景下應(yīng)運(yùn)而生的,具有無(wú)限可擴(kuò)展、支持QoS、安全性強(qiáng)等優(yōu)點(diǎn)的新型網(wǎng)絡(luò)；此外由于向量網(wǎng)中路由和交換功能的分離,交換節(jié)點(diǎn)只需完成簡(jiǎn)單的功能,可以達(dá)到簡(jiǎn)化設(shè)備成本、降低網(wǎng)絡(luò)維護(hù)開(kāi)銷的目的。 為了獲取傳統(tǒng)網(wǎng)絡(luò)的拓?fù)浣Y(jié)構(gòu),需要交換機(jī)能配合拓?fù)涫占目刂泼婀δ�；而在向量網(wǎng)中,數(shù)據(jù)面和控制面分離,數(shù)據(jù)面的交換設(shè)備只具備基本的數(shù)據(jù)交換功能和最簡(jiǎn)化的信令功能,幾乎沒(méi)有任何控制面功能,如何獲取網(wǎng)絡(luò)拓?fù)湫枰鶕?jù)其特點(diǎn)設(shè)計(jì)專門的機(jī)制。本文作者主要完成的工作有如下幾點(diǎn)：(1)提出端系統(tǒng)主動(dòng)探測(cè)、網(wǎng)絡(luò)節(jié)點(diǎn)簡(jiǎn)單響應(yīng)的拓?fù)涮綔y(cè)方法(Node Answering on Leader Probing,簡(jiǎn)稱NALP),能主動(dòng)獲取簡(jiǎn)單交換機(jī)組成向量網(wǎng)的拓?fù)?完成網(wǎng)絡(luò)路由。(2)設(shè)計(jì)了上述拓?fù)涮綔y(cè)方法的網(wǎng)絡(luò)協(xié)議,規(guī)定了信令格式,以便實(shí)現(xiàn)拓?fù)涮綔y(cè)過(guò)程。(3)結(jié)合已有的向量網(wǎng)猜測(cè)探測(cè)法,解決了兩種類型的簡(jiǎn)單向量交換機(jī)組成網(wǎng)絡(luò)的拓?fù)浒l(fā)現(xiàn)問(wèn)題。(4)仿真系統(tǒng)實(shí)現(xiàn)。作者用C++語(yǔ)言實(shí)現(xiàn)了中小型向量網(wǎng)拓?fù)涮綔y(cè)的仿真系統(tǒng),該仿真系統(tǒng)與真實(shí)系統(tǒng)實(shí)現(xiàn)相同的功能,不同的是仿真系統(tǒng)中增加了對(duì)網(wǎng)絡(luò)設(shè)備的模擬。 本文提出的算法是基于向量網(wǎng)自身的數(shù)據(jù)轉(zhuǎn)發(fā)特性,因此不需要任何特殊額外的協(xié)議支持,具有通用性,這就意味著它同時(shí)擁有很好的可移植性(適用于任何向量網(wǎng)絡(luò)結(jié)構(gòu))。本文結(jié)尾,作者通過(guò)編寫(xiě)程序?qū)Σ煌W(wǎng)絡(luò)結(jié)構(gòu)的拓?fù)溥M(jìn)行仿真實(shí)驗(yàn),充分驗(yàn)證了該方法的準(zhǔn)確性和完整性。
[Abstract]:With the rapid development of network technology, it is difficult for the existing network technology to keep up with people's requirements for faster, more convenient and more secure network. To this end, a variety of new network technology is also emerging in endlessly. In this context, vector network technology is a new type of network, which has the advantages of infinite extensibility and strong security of QoS,. In addition, because of the separation of routing and switching functions in vector networks, switching nodes only need to complete simple functions, which can simplify equipment costs and reduce network maintenance overhead. In order to obtain the topology structure of the traditional network, it is necessary for the switch to cooperate with the control plane function of the topology collection. In vector networks, the data plane is separated from the control plane. The switching equipment of the data plane only has the basic data exchange function and the most simplified signaling function, and there is almost no control plane function. How to obtain a network topology needs to design a special mechanism according to its characteristics. The main work accomplished by the author of this paper is as follows: (1) propose a topology detection method for active detection of end system and simple response of network nodes (Node Answering on Leader Probing, for short NALP), can actively acquire the topology of a vector network composed of simple switches. The network routing is completed. (2) the network protocol of the topology detection method is designed, and the signaling format is defined in order to realize the topology detection process. (3) combined with the existing vector network conjecture detection method, The topology discovery problem of two types of simple vector switches is solved. (4) the realization of simulation system. The simulation system for topology detection of medium and small vector networks is implemented in C language. The simulation system has the same function as the real system, but the simulation of network equipment is added to the simulation system. The algorithm proposed in this paper is based on the data forwarding characteristics of the vector network itself, so it does not require any special additional protocol support and is universal, which means that it has good portability (applicable to any vector network structure) at the same time. At the end of this paper, the accuracy and completeness of the proposed method are fully verified by the simulation experiments of topology with different network structures written by the author.
【學(xué)位授予單位】：北京交通大學(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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