本文選題：網(wǎng)絡(luò)測量　切入點：路由優(yōu)化　出處：《北京郵電大學(xué)》2014年碩士論文

【摘要】：隨著Internet內(nèi)部結(jié)構(gòu)日益復(fù)雜化,用戶對網(wǎng)絡(luò)服務(wù)質(zhì)量(QoS)的要求也在不斷提高,網(wǎng)絡(luò)業(yè)務(wù)的多樣化對網(wǎng)絡(luò)的傳輸性能提出了更高的要求,計算機網(wǎng)絡(luò)的高效性、穩(wěn)定性和可靠性等方面也越來越成為人們關(guān)注的焦點問題,因此近年來,網(wǎng)絡(luò)測量與路由優(yōu)化在IP網(wǎng)絡(luò)中起著舉足輕重的地位。 然而,目前針對這兩個方面的研究大多是兩個部分單獨的應(yīng)用研究,并沒能很好地把兩部分結(jié)合起來,隨著網(wǎng)絡(luò)的不斷發(fā)展,特定系統(tǒng)的缺陷便逐漸凸顯出來。單一的網(wǎng)絡(luò)測量系統(tǒng)具有如下幾個缺點：1)只能簡單的對網(wǎng)絡(luò)進(jìn)行性能測量,并不能根據(jù)實際的網(wǎng)絡(luò)情況和問題有針對性地提出解決的方案,缺乏對問題的具體化；2)很難有一套測量系統(tǒng)適用于不用的測量要求,可擴展性和可操作性差。而單一的路由優(yōu)化系統(tǒng)也存在著以下缺點：1)路由優(yōu)化缺乏針對性,不能夠真實反映網(wǎng)絡(luò)當(dāng)前的性能狀況；2)很多路由優(yōu)化都需要進(jìn)行基于路由器的測量,需要路由器的協(xié)作,并且會帶來其他一些問題,所以很難在實際中部署實施。本文著重將網(wǎng)絡(luò)測量與路由優(yōu)化兩部分結(jié)合起來,設(shè)計并實現(xiàn)了一種基于網(wǎng)絡(luò)測量的互聯(lián)網(wǎng)路由優(yōu)化系統(tǒng)。通過結(jié)合這兩部分,可以解決上述網(wǎng)絡(luò)測量針對性差、路由優(yōu)化時效性差等問題。系統(tǒng)主要具備以下功能：1)該系統(tǒng)首先對當(dāng)前網(wǎng)絡(luò)性能指標(biāo)進(jìn)行測量,獲得所需的網(wǎng)絡(luò)性能參數(shù)；2)利用路由優(yōu)化算法分析測量參數(shù),得到一條端到端的最優(yōu)路徑；3)系統(tǒng)中加入了異常數(shù)據(jù)處理機制,可以對網(wǎng)絡(luò)測量得到的數(shù)據(jù)進(jìn)行分析,查看是否有異常數(shù)據(jù)存在,保證網(wǎng)絡(luò)測量所得數(shù)據(jù)的準(zhǔn)確性；4)系統(tǒng)中加入了數(shù)據(jù)呈現(xiàn)與控制管理機制,能夠?qū)y量所得的網(wǎng)絡(luò)性能參數(shù)呈現(xiàn)給網(wǎng)絡(luò)管理員,讓網(wǎng)絡(luò)管理員能夠及時了解當(dāng)前網(wǎng)絡(luò)狀態(tài),處理網(wǎng)絡(luò)問題。 最后在實驗室網(wǎng)絡(luò)環(huán)境下對系統(tǒng)進(jìn)行了功能性能測試,測試結(jié)果表明,本文設(shè)計的基于網(wǎng)絡(luò)測量的路由優(yōu)化系統(tǒng)能夠準(zhǔn)確測量網(wǎng)絡(luò)性能參數(shù)并分析得到在當(dāng)前網(wǎng)絡(luò)情況下最優(yōu)的的路由優(yōu)化結(jié)果,并且當(dāng)發(fā)送測量數(shù)據(jù)包個數(shù)為10的情況下,系統(tǒng)處理所需的時間僅占總?cè)蝿?wù)時間的1.4%。除此之外,系統(tǒng)中的異常數(shù)據(jù)處理機制還能夠提升測量樣本的準(zhǔn)確性,系統(tǒng)整體性能良好。
[Abstract]:As the internal structure of Internet becomes more and more complicated, the requirement of users to the quality of service (QoS) of the network is also increasing. The diversification of network services puts forward higher requirements for the transmission performance of the network, and the high efficiency of the computer network. In recent years, network measurement and routing optimization play an important role in IP networks. However, at present, most of the research on these two aspects is a separate application study, which does not combine the two parts well, and with the continuous development of the network, The shortcomings of a specific system are gradually becoming apparent. A single network measurement system has the following shortcomings: 1) it can only simply measure the performance of the network, and it cannot put forward a solution to the problem according to the actual network situation and problems. It is very difficult to have a set of measurement system suitable for the measurement requirement that need not be used, and the expansibility and maneuverability of the single route optimization system are poor, and the single route optimization system also has the following shortcomings: 1) the route optimization lacks pertinence. Many routing optimizations require router-based measurements, router collaboration, and other problems. Therefore, it is very difficult to deploy in practice. This paper focuses on the combination of network measurement and routing optimization, and designs and implements an Internet routing optimization system based on network measurement. The system can solve the problems of poor pertinence of network measurement and poor timeliness of route optimization, etc. The system mainly has the following function: 1) the system first measures the current network performance index. To obtain the required network performance parameters, we use the route optimization algorithm to analyze the measurement parameters, and get an end-to-end optimal path to the system. The abnormal data processing mechanism is added to the system, which can be used to analyze the data obtained from the network measurement. Check to see if there are abnormal data, ensure the accuracy of the data measured in the system. Add the data presentation and control management mechanism to show the measured network performance parameters to the network administrator. So that network administrators can understand the current network status and deal with network problems. Finally, the functional performance of the system is tested in the laboratory network environment, and the test results show that, The routing optimization system based on network measurement designed in this paper can accurately measure the network performance parameters and obtain the optimal route optimization results under the current network conditions, and when the number of measurement packets is 10, The processing time of the system is only 1.4% of the total task time. In addition, the abnormal data processing mechanism in the system can improve the accuracy of the measurement samples, and the overall performance of the system is good.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP393.06

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本文編號：1655075