PPPoE协议研究与改进
发布时间：2018-10-19 10:22
【摘要】：PPPoE协议基于两个广泛接受的标准:PPP点对点协议和802.3以太网标准。PPPoE的目的是在以太网共享介质的网络上提供一条的点到点的逻辑链路,从而使得以太网中的用户都能与宽带接入服务器建立逻辑PPP连接。PPPoE充分利用了以太网的寻址能力,通过这种方式,用户不需要深刻地了解局域网技术只需要通过用户名密码拨号上网;并且运营商也不用耗费巨资改造目前的局域网结构。PPPoE是目前广泛使用的接入网协议,提供良好的鉴权、计费机制。虽然目前城市网络构建良好,接入网采用光纤、5类双绞线等支持高带宽、大容量的传输介质,然而在某些特殊场景下,例如老旧的网络,接入网链路质量无法得到保障。本文因为项目需求,需要对这样的网络进行网络改造。由于实际条件的限制,采用通过网络协议优化的方式来为特殊的网络场景服务。本文介绍了PPPoE协议以及PPP协议,分析了网络中时延以及网络终端设备处理能力差异的原因以及解决方案,并且提出了服务器根据终端设备链路质量动态实施时延容忍机制,改善网络设备由于链路质量而频道掉线的问题,除此之外还提出通过对PPPoE头部压缩以及IP头部压缩提高网络链路带宽利用率。在实现部分,本文提出服务器采用转发与控制分离的分布式架构,从而可以运用于大规模的路由接入,提高转发性能;客户端采用嵌入式Linux,在程序模块设计中针对性地实现PPPoE协议主要功能,尽量使代码简洁。最后根据实际应用场景模拟了相似的应用场景,通过测试表明对PPPoE协议的优化,在链路质量不佳的情况下增加了客户端的同时在线数,并且减小了传输时延、节约了网络带宽,满足项目需求。
[Abstract]:The PPPoE protocol is based on two widely accepted standards: the PPP point-to-point protocol and the 802.3 Ethernet standard. PPPoE aims to provide a point-to-point logical link on a network of Ethernet shared media. So that all users in Ethernet can establish logical PPP connection with broadband access server. PPPoE makes full use of the addressing ability of Ethernet, through this way, Users do not need to deeply understand the LAN technology only through user name and password dial-up Internet access, and operators do not have to spend a lot of money to reform the current LAN structure. PPPoE is a widely used access network protocol, providing good authentication, Accounting mechanism. Although the current urban network is well constructed, the access network uses high bandwidth and large capacity transmission media such as optical fiber, 5 kinds of twisted pair cable, etc. However, in some special scenarios, such as the old network, the link quality of access network can not be guaranteed. Because of project requirement, this article needs to carry on the network transformation to this kind of network. Due to the limitation of practical conditions, network protocol optimization is adopted to serve special network scenarios. This paper introduces the PPPoE protocol and the PPP protocol, analyzes the reasons and solutions of the delay and the difference of the network terminal equipment processing capacity, and proposes a dynamic delay tolerance mechanism based on the terminal equipment link quality. In addition to improving the problem of channel dropping due to link quality in network devices, it is also proposed to improve the bandwidth utilization of network links by compression of PPPoE headers and IP header compression. In the implementation part, this paper proposes that the server adopts distributed architecture of separate forwarding and control, which can be applied to large-scale routing access and improve forwarding performance. The client adopts embedded Linux, to realize the main functions of PPPoE protocol in the program module design, and makes the code as simple as possible. Finally, the similar application scenarios are simulated according to the actual application scenarios. The test results show that the optimization of PPPoE protocol can increase the number of simultaneously online clients in the case of poor link quality, reduce the transmission delay and save the network bandwidth. Meet project requirements.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.11;TP393.04
本文编号：2280851
[Abstract]:The PPPoE protocol is based on two widely accepted standards: the PPP point-to-point protocol and the 802.3 Ethernet standard. PPPoE aims to provide a point-to-point logical link on a network of Ethernet shared media. So that all users in Ethernet can establish logical PPP connection with broadband access server. PPPoE makes full use of the addressing ability of Ethernet, through this way, Users do not need to deeply understand the LAN technology only through user name and password dial-up Internet access, and operators do not have to spend a lot of money to reform the current LAN structure. PPPoE is a widely used access network protocol, providing good authentication, Accounting mechanism. Although the current urban network is well constructed, the access network uses high bandwidth and large capacity transmission media such as optical fiber, 5 kinds of twisted pair cable, etc. However, in some special scenarios, such as the old network, the link quality of access network can not be guaranteed. Because of project requirement, this article needs to carry on the network transformation to this kind of network. Due to the limitation of practical conditions, network protocol optimization is adopted to serve special network scenarios. This paper introduces the PPPoE protocol and the PPP protocol, analyzes the reasons and solutions of the delay and the difference of the network terminal equipment processing capacity, and proposes a dynamic delay tolerance mechanism based on the terminal equipment link quality. In addition to improving the problem of channel dropping due to link quality in network devices, it is also proposed to improve the bandwidth utilization of network links by compression of PPPoE headers and IP header compression. In the implementation part, this paper proposes that the server adopts distributed architecture of separate forwarding and control, which can be applied to large-scale routing access and improve forwarding performance. The client adopts embedded Linux, to realize the main functions of PPPoE protocol in the program module design, and makes the code as simple as possible. Finally, the similar application scenarios are simulated according to the actual application scenarios. The test results show that the optimization of PPPoE protocol can increase the number of simultaneously online clients in the case of poor link quality, reduce the transmission delay and save the network bandwidth. Meet project requirements.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.11;TP393.04
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相关期刊论文 前2条
1 徐善鹏;;嵌入式操作系统VxWorks下PPPoE的实现[J];国外电子元器件;2006年05期
2 陈伟宁;徐志根;谢玉兰;;PPPoE在嵌入式网络机顶盒中的实现[J];微计算机信息;2006年20期
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