【摘要】：隨著網(wǎng)絡(luò)技術(shù)的發(fā)展和網(wǎng)絡(luò)規(guī)模的增長,校園網(wǎng)上的新業(yè)務(wù)越來越多,而不同的網(wǎng)絡(luò)應(yīng)用對(duì)服務(wù)質(zhì)量的需求有所不同。比如視頻和語音對(duì)傳輸延遲的要求很高,而郵件等業(yè)務(wù)對(duì)時(shí)間延遲不敏感。傳統(tǒng)網(wǎng)絡(luò)協(xié)議對(duì)所有不同種類的業(yè)務(wù)只提供“盡力而為”的服務(wù)方式,這對(duì)于視頻與語音等多媒體業(yè)務(wù)的支持遠(yuǎn)遠(yuǎn)不夠。不同數(shù)據(jù)類型的應(yīng)用對(duì)于通信條件的要求各不相同,為了保證多種業(yè)務(wù)的通信要求,引發(fā)了對(duì)校園網(wǎng)QoS(Quality of Service)的研究。本文首先深入分析了IETF (Internet Engineering Task Force)提出的三種QoS服務(wù)模型,即綜合服務(wù)模型(Integrated Service, IntServ),區(qū)分服務(wù)模型(Different Service, DiffServ)和多標(biāo)簽協(xié)議交換服務(wù)模型(Multiple Protocol Label Switch, MPLS)。DiffServ提供因特網(wǎng)業(yè)務(wù)的區(qū)分服務(wù),支持各種類型的應(yīng)用程序與具體業(yè)務(wù)需求�？紤]到DiffServ具有實(shí)現(xiàn)簡(jiǎn)單、靈活通用等優(yōu)點(diǎn),本文選擇DiffServ作為QoS流量控制系統(tǒng)的體系結(jié)構(gòu)。本系統(tǒng)針對(duì)未來小學(xué)校園網(wǎng)絡(luò)中語音和視頻等多種業(yè)務(wù)的特定應(yīng)用,以開源的路由器操作系統(tǒng)OpenWRT中Linux內(nèi)核中的流量控制(Traffic Control, TC)模塊為基礎(chǔ),設(shè)計(jì)一套適合多業(yè)務(wù)的流量控制方案MSTC(Multiple Services Traffic Control)。本系統(tǒng)通過對(duì)Linux內(nèi)核中的TC模塊加以定制,將隊(duì)列調(diào)度策略、分類、過濾器結(jié)合在一起,以滿足不同業(yè)務(wù)的流量控制需要。本系統(tǒng)的測(cè)試實(shí)驗(yàn)數(shù)據(jù)表明,設(shè)計(jì)的MSTC系統(tǒng)較好實(shí)現(xiàn)了預(yù)期的流量控制,可為校園網(wǎng)用戶提供可靠的服務(wù)質(zhì)量。
[Abstract]:With the development of network technology and the growth of network scale, there are more and more new services on campus network. For example, video and voice require high transmission delay, while mail and other services are not sensitive to time delay. Traditional network protocols only provide "best effort" service for all kinds of services, which is far from enough for multimedia services such as video and voice. The application of different data types has different requirements for communication conditions. In order to ensure the communication requirements of various services, the research on campus network QoS (Quality of Service) has been initiated. In this paper, three kinds of QoS service models proposed by IETF (Internet Engineering Task Force), that is, (Integrated Service, IntServ), differentiated service model (Different Service, DiffServ) and multi-label protocol switching service model (Multiple Protocol Label Switch, MPLS). DiffServ), are analyzed in detail. Support various types of applications and specific business requirements. Considering that DiffServ has the advantages of simplicity, flexibility and generality, this paper chooses DiffServ as the architecture of QoS flow control system. This system is based on the traffic control (Traffic Control, TC) module in the Linux kernel of OpenWRT, the open source router operating system, aiming at the specific applications of voice and video services in the future primary school campus network. Design of a Multi-service flow Control Scheme MSTC (Multiple Services Traffic Control). By customizing the TC module in the Linux kernel, the system combines queue scheduling strategy, classification and filter to meet the traffic control needs of different services. The experimental data of the system show that the designed MSTC system can achieve the expected flow control and provide reliable quality of service for campus network users.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TP393.06

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本文編號(hào)：2153995