OpenFlow網(wǎng)絡(luò)中服務(wù)器負(fù)載均衡的研究
發(fā)布時(shí)間：2019-04-17 13:23
【摘要】：目前許多互聯(lián)網(wǎng)企業(yè)都需要為大量的用戶同時(shí)提供服務(wù),這些企業(yè)通常需要建立一個(gè)復(fù)雜的網(wǎng)絡(luò),并使用多臺(tái)服務(wù)器對(duì)外提供服務(wù),為了合理的利用資源,降低成本,提供高質(zhì)量可靠的服務(wù),企業(yè)內(nèi)部通常會(huì)使用負(fù)載均衡技術(shù),由于傳統(tǒng)互聯(lián)網(wǎng)自身的缺陷,現(xiàn)有的負(fù)載均衡價(jià)格昂貴,也缺乏足夠的靈活性。SDN的提出為許多現(xiàn)有的網(wǎng)絡(luò)問(wèn)題提供了新的解決方案,本文利用SDN的一些特性,在OpenFlow網(wǎng)絡(luò)中設(shè)計(jì)并實(shí)現(xiàn)了服務(wù)器負(fù)載均衡。主要完成了以下工作： 1、目前OpenFlow交換機(jī)價(jià)格昂貴,基于NetFPGA的OpenFlow交換機(jī)成為實(shí)驗(yàn)人員的首選,本文對(duì)基于NetFPGA的OpenFlow交換機(jī)進(jìn)行了一系列的測(cè)試,為OpenFlow網(wǎng)絡(luò)的研究做了很好的準(zhǔn)備工作。 2、在OpenFlow網(wǎng)絡(luò)中控制器通常由軟件實(shí)現(xiàn),對(duì)軟件來(lái)講性能往往是人們最關(guān)心的問(wèn)題之一,本文測(cè)試了Floodlight控制器下發(fā)流表的性能。 3、設(shè)計(jì)并實(shí)現(xiàn)了一個(gè)基于服務(wù)器運(yùn)行狀態(tài)的負(fù)載均衡算法,該算法根據(jù)服務(wù)器CPU和內(nèi)存的使用率計(jì)算服務(wù)器的綜合負(fù)載,當(dāng)客戶端請(qǐng)求到達(dá)時(shí),控制器選擇綜合負(fù)載最小的服務(wù)器為用戶提供服務(wù)。 4、設(shè)計(jì)了一種服務(wù)器負(fù)載均衡方案,該將網(wǎng)絡(luò)的管理和服務(wù)器的狀態(tài)監(jiān)控結(jié)合起來(lái),OpenFlow交換機(jī)通過(guò)對(duì)數(shù)據(jù)包的修改把請(qǐng)求轉(zhuǎn)發(fā)給綜合負(fù)載最小的服務(wù)器,這樣可以有效的利用每一臺(tái)服務(wù)器的計(jì)算能力。
[Abstract]:At present, many Internet enterprises need to provide services to a large number of users at the same time. These enterprises usually need to establish a complex network and use multiple servers to provide services. In order to make rational use of resources and reduce costs, To provide high-quality and reliable services, load balancing technology is often used within the enterprise, and existing load balancing is expensive due to the shortcomings of the traditional Internet itself. The proposed SDN provides a new solution for many existing network problems. This paper designs and implements server load balancing in OpenFlow network by utilizing some characteristics of SDN. The main work is as follows: 1. At present, OpenFlow switches are expensive, NetFPGA-based OpenFlow switches have become the first choice for experimenters. In this paper, a series of tests on NetFPGA-based OpenFlow switches have been carried out. Good preparation has been made for the research of OpenFlow network. 2. In the OpenFlow network, the controller is usually implemented by software, and the performance of the controller is one of the most concerned problems for the software. This paper tests the performance of the flow table under the Floodlight controller. 3, a load balancing algorithm based on server running state is designed and implemented. The algorithm calculates the overall load of the server according to the usage of server CPU and memory. When the client requests arrive, the load of the server is calculated. The controller selects the server with the least combined load to serve the user. 4. A server load balancing scheme is designed, which combines the network management with server status monitoring. The OpenFlow switch forwards the request to the server with the least combined load by modifying the packet. This can effectively utilize the computing power of each server.
【學(xué)位授予單位】：蘭州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP393.05
本文編號(hào)：2459484
[Abstract]:At present, many Internet enterprises need to provide services to a large number of users at the same time. These enterprises usually need to establish a complex network and use multiple servers to provide services. In order to make rational use of resources and reduce costs, To provide high-quality and reliable services, load balancing technology is often used within the enterprise, and existing load balancing is expensive due to the shortcomings of the traditional Internet itself. The proposed SDN provides a new solution for many existing network problems. This paper designs and implements server load balancing in OpenFlow network by utilizing some characteristics of SDN. The main work is as follows: 1. At present, OpenFlow switches are expensive, NetFPGA-based OpenFlow switches have become the first choice for experimenters. In this paper, a series of tests on NetFPGA-based OpenFlow switches have been carried out. Good preparation has been made for the research of OpenFlow network. 2. In the OpenFlow network, the controller is usually implemented by software, and the performance of the controller is one of the most concerned problems for the software. This paper tests the performance of the flow table under the Floodlight controller. 3, a load balancing algorithm based on server running state is designed and implemented. The algorithm calculates the overall load of the server according to the usage of server CPU and memory. When the client requests arrive, the load of the server is calculated. The controller selects the server with the least combined load to serve the user. 4. A server load balancing scheme is designed, which combines the network management with server status monitoring. The OpenFlow switch forwards the request to the server with the least combined load by modifying the packet. This can effectively utilize the computing power of each server.
【學(xué)位授予單位】：蘭州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP393.05
【參考文獻(xiàn)】
相關(guān)期刊論文 前4條
1 余侃;;云計(jì)算時(shí)代的數(shù)據(jù)中心建設(shè)與發(fā)展[J];信息通信;2011年06期
2 陳娟,崔燦,凌云,陳綺;SNMP擴(kuò)展代理的實(shí)現(xiàn)[J];計(jì)算機(jī)工程;2005年13期
3 左青云;陳鳴;趙廣松;邢長(zhǎng)友;張國(guó)敏;蔣培成;;基于OpenFlow的SDN技術(shù)研究[J];軟件學(xué)報(bào);2013年05期
4 薛軍,李增智,王云嵐;負(fù)載均衡技術(shù)的發(fā)展[J];小型微型計(jì)算機(jī)系統(tǒng);2003年12期
，本文編號(hào)：2459484
本文鏈接：http://www.wukwdryxk.cn/guanlilunwen/ydhl/2459484.html
最近更新
教材專著
