BT网络流量监控与带宽管理的研究.docVIP

BT网络流量监控与带宽管理的研究 摘 要 近年来，P2P网络逐渐成为新一代互联网技术研究的热门话题现在深受喜爱的BT软件就是P2P网络的典型代表。BT(BitTorrent)可以说是一个必威体育精装版概念P2P下载工具它采用了多点对多点的原理每个人在下载的同时，也在为其他用户提供上传。BT下载方式出现之后，很快就被下载迷们用来交流必威体育精装版的电影大片或软件，给资源的共享带来了很多的便利，但同时由于BT消耗带宽，使用BT下载容易造成网络流量的堵塞，从而影响了大多数正常用户的网速。因此如果能对BT的网络效率进行改善，使之能够减小带宽消耗，将是P2P技术上一个很大的进步。这样既可以让广大BT爱好者尽情地下载，又不会影响其他用户的正常上网。Recently, as a representative of file sharing software, BT, is gradually becoming prevailing on the internet. It brings us unprcedented downloading speed, so that we can download our desired resources without any effort, and share our own resources with others. This high speed downloading is a two-edged sword, on the one hand, it can bring us its convenience, on the other hand, it also occupies too much bandwidth. It has been a bottleneck of the development of BT that its downloading consumes too much bandwidth, which needs to be addressed immediately. OPNET is a relatively excellent network simulation software until now. It is very strong and offers great conveniences during our network simulation, and more options with its flexibilities. We can study different aspects of network, so we can choose keypoint and discard the less important points, which not only can ease the workload, boost efficiency and keep the accuracy and authenticity untouched. This paper uses OPNET to simulate the bandwidth characteristic of MAN, in the purpose of discussing the changes of interior common points’ downloading bandwidth brought about by putting limits on egress bandwidth of router in MAN, based on which, we can further put forward some strategies of bandwidth management, so that the bandwidth consuming can be alleviated. This paper is divided into several parts. The first part includes chapter 2 and 3, an introduction to the basic elements of BT downloading. The second part is the chapter 4, an introduction to OPNET. The third part is chapter 5, specificly intruoduce experiment’s precodure and results, and the last is some prospect in this field. KEY WORDS p2p network