【摘要】：隨著網(wǎng)絡(luò)技術(shù)的迅速發(fā)展和網(wǎng)絡(luò)應(yīng)用業(yè)務(wù)的逐漸豐富，網(wǎng)絡(luò)影響到生活的各個(gè)領(lǐng)域，用戶對(duì)網(wǎng)絡(luò)的穩(wěn)定性、可用性和響應(yīng)時(shí)間的要求逐漸變高。為了提高網(wǎng)絡(luò)服務(wù)質(zhì)量（Quality of Service，QoS）以確保網(wǎng)絡(luò)能夠承載各種網(wǎng)絡(luò)應(yīng)用業(yè)務(wù)，網(wǎng)絡(luò)測(cè)量和網(wǎng)絡(luò)評(píng)價(jià)技術(shù)顯得尤為重要。 網(wǎng)絡(luò)測(cè)量以網(wǎng)絡(luò)設(shè)備為主要被管對(duì)象，采集相關(guān)網(wǎng)絡(luò)性能數(shù)據(jù)；網(wǎng)絡(luò)評(píng)價(jià)以這些性能數(shù)據(jù)為基礎(chǔ)，建立QoS的評(píng)價(jià)模型，對(duì)網(wǎng)絡(luò)上不同的網(wǎng)絡(luò)業(yè)務(wù)的運(yùn)行情況進(jìn)行分析和評(píng)估。本文針對(duì)重慶大學(xué)校園網(wǎng)絡(luò)管理系統(tǒng)，從具體的網(wǎng)絡(luò)應(yīng)用業(yè)務(wù)的用戶體驗(yàn)質(zhì)量（Quality of Experience，QoE）的角度對(duì)網(wǎng)絡(luò)測(cè)量和評(píng)價(jià)技術(shù)進(jìn)行了相關(guān)的研究。研究的內(nèi)容主要有以下幾點(diǎn)： ①研究網(wǎng)絡(luò)性能的測(cè)量指標(biāo)及測(cè)量方法，提出一種自適應(yīng)的流量數(shù)據(jù)采集算法。該方法通過計(jì)算在一段時(shí)間t內(nèi)，流量數(shù)據(jù)大小的浮動(dòng)值D相對(duì)于測(cè)量平滑區(qū)間n內(nèi)的平均測(cè)量值D n的平均變化幅度以及變化速率，來調(diào)整下一次流量數(shù)據(jù)采集的時(shí)間間隔，從而獲取更多流量數(shù)據(jù)變化的細(xì)節(jié)信息，減少了數(shù)據(jù)采集次數(shù)。 ②提出一種改進(jìn)的SNMP性能數(shù)據(jù)采集方法。采用SNMPv2中的GetBulk操作與SNMP Get操作相結(jié)合的方式，通過區(qū)分標(biāo)量對(duì)象、一次“下一個(gè)對(duì)象操作”的列對(duì)象和多次“下一個(gè)對(duì)象操作”的列對(duì)象，最大程度地增加每個(gè)Response數(shù)據(jù)包中返回的信息量，從而降低了網(wǎng)絡(luò)管理站與代理設(shè)備的通訊次數(shù)，提高了代理設(shè)備處理Request報(bào)文的響應(yīng)速度，大大減少了數(shù)據(jù)采集的冗余數(shù)據(jù)量。 ③針對(duì)不同廠商網(wǎng)絡(luò)設(shè)備的Trap數(shù)據(jù)格式和數(shù)據(jù)項(xiàng)的差異，設(shè)計(jì)了一種通用的SNMP Trap數(shù)據(jù)采集方法，可以很及時(shí)地對(duì)網(wǎng)絡(luò)中的故障和告警信息進(jìn)行展示和統(tǒng)計(jì)，以方便網(wǎng)絡(luò)管理者進(jìn)行網(wǎng)絡(luò)維護(hù)。 ④從網(wǎng)絡(luò)業(yè)務(wù)質(zhì)量的角度出發(fā)，提出一種面向網(wǎng)絡(luò)業(yè)務(wù)的基于模糊層次分析法的質(zhì)量評(píng)估模型。該模型考慮到網(wǎng)絡(luò)中各個(gè)QoS性能指標(biāo)參數(shù)之間的相互影響作用以及具體的網(wǎng)絡(luò)應(yīng)用業(yè)務(wù)對(duì)不同性能指標(biāo)參數(shù)的敏感程度，，結(jié)合統(tǒng)計(jì)學(xué)方法，對(duì)校園網(wǎng)中兩條網(wǎng)絡(luò)路徑的業(yè)務(wù)質(zhì)量進(jìn)行了評(píng)估和分析。 ⑤在重慶大學(xué)校園網(wǎng)絡(luò)管理系統(tǒng)上進(jìn)行具體的實(shí)踐。通過結(jié)合ICMP與SNMP中輪詢及Trap的測(cè)量方式，對(duì)校園網(wǎng)內(nèi)網(wǎng)絡(luò)路徑的性能狀況進(jìn)行測(cè)量和評(píng)價(jià)。
[Abstract]:With the rapid development of network technology and the gradual enrichment of network application services, network affects every field of life, and users' requirements for network stability, availability and response time become higher and higher. In order to improve the quality of service (Quality of Service,QoS) to ensure that the network can carry a variety of network applications, network measurement and network evaluation technology is particularly important. The network measurement takes the network equipment as the main managed object, collects the related network performance data, and based on these performance data, establishes the evaluation model of QoS, and analyzes and evaluates the operation of different network services on the network. Based on the campus network management system of Chongqing University, this paper studies the network measurement and evaluation technology from the point of view of user experience quality (Quality of Experience,QoE) of specific network application services. The main contents of the research are as follows: 1 the measurement index and measurement method of network performance are studied, and an adaptive traffic data acquisition algorithm is proposed. This method adjusts the time interval of the next flow data acquisition by calculating the average change amplitude and the change rate of the floating value D of the flow data relative to the average measured value D n in the measured smoothing interval n within a period of time t. In order to obtain more detailed information of traffic data change and reduce the number of data acquisition. 2 an improved SNMP performance data acquisition method is proposed. By combining GetBulk operation with SNMP Get operation in SNMPv2, this paper distinguishes between scalar object, column object of "next object operation" and column object of "next object operation". The amount of information returned in each Response packet is increased to the greatest extent, which reduces the communication between the network management station and the agent device, and improves the response speed of the agent device in processing the Request message. The redundant data amount of data acquisition is greatly reduced. (3) aiming at the difference of Trap data format and data items of different manufacturers, a general SNMP Trap data acquisition method is designed. The fault and alarm information in the network can be displayed and counted in a timely manner, in order to facilitate network maintenance for network managers. 4 from the point of view of network service quality, A quality assessment model based on fuzzy analytic hierarchy process (FAHP) for network services is proposed. The model takes into account the interaction between each QoS performance parameter in the network and the sensitivity of specific network application services to different performance index parameters. The service quality of two network paths in the campus network is evaluated and analyzed. 5 the concrete practice is carried out on the campus network management system of Chongqing University. The performance of network path in campus network is measured and evaluated by means of polling and Trap measurement in ICMP and SNMP.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP393.18

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 張靖;;模糊綜合評(píng)判的校園網(wǎng)性能評(píng)價(jià)研究[J];電子科技大學(xué)學(xué)報(bào);2009年06期

2 夏靖波;羅峗騫;;IP網(wǎng)絡(luò)運(yùn)行質(zhì)量模糊綜合評(píng)估方法研究[J];電子科技大學(xué)學(xué)報(bào);2011年02期

3 張廣興;張大方;謝高崗;楊建華;張敦行;;Internet城域出口鏈路流量測(cè)量與特征分析[J];電子學(xué)報(bào);2007年11期

4 畢經(jīng)平,吳起,李忠誠;Internet端到端性能監(jiān)測(cè)與分析系統(tǒng)的關(guān)鍵技術(shù)研究[J];計(jì)算機(jī)輔助設(shè)計(jì)與圖形學(xué)學(xué)報(bào);2003年01期

5 孫陽;孫文生;;基于業(yè)務(wù)類型的異構(gòu)無線網(wǎng)絡(luò)選擇算法[J];中國電子科學(xué)研究院學(xué)報(bào);2009年04期

6 周紅瓊;周宇;葉慶衛(wèi);王曉東;;基于IP應(yīng)用的網(wǎng)絡(luò)質(zhì)量評(píng)價(jià)研究[J];計(jì)算機(jī)科學(xué);2012年S1期

7 杜棟;基于0.1～0.9標(biāo)度的AHP再研究[J];系統(tǒng)工程與電子技術(shù);2001年05期

8 林鈞昌,徐澤水;模糊AHP中一種新的標(biāo)度法[J];運(yùn)籌與管理;1998年02期

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