基于BGP协议的大型企业网络的构建

I基于BGP协议的大型企业网络的构建摘要随着现在互联网业务的蓬勃发展，越来越多的人开始使用互联网。网络和人们的生活息息相关，越来越多的人开始离不开互联网。随着网络技术的不断发展，网络的全民普及，企业网络的建设是企业向信息化发展的必然选择。随着企业的体系和规模的逐渐完善和发展，随之而来的问题，就是企业网络的不断完善，如果企业的网络过大，那么IGP就不能再满足与企业的需求，那么该使用什么类型的体系和协议，来让一个庞大的企业进行正常的运作，这就是本文需要研究和探索的内容。BGP是一种外部网关协议。是运行于TCP协议上的一种自治系统的路由协议。是唯一一个用来处理像因特网大小的网络的协议，也是唯一能够妥善处理好不相关路由域间的多路连接的协议。它能在不同自治系统的路由器之间进行通信。所以，BGP协议的出现能很好的解决上述问题。本文探索和研究BGP在大型企业网络体系中的适应性。在对BGP协议原理的阐述和通过实验研究，来证明其原理的可行性。在本文中，用企业网互连的具体实验方案来论证这一观点。通过采用H3C公司命令的LITO模拟方针软件，发现用BGP协议进行的通信和互连，一个大型企业的总部和分部都能够自由的互访。因此，使用BGP协议来讲企业的总部和分部的业务互连是完全可行的。关键词：BGP；企业网络；总部；通信IIConstructionBGP-basedprotocolforlargeenterprisenetworksAbstractWiththeboomingInternetbusinessnow,moreandmorepeoplebegintousetheInternet.Networkandpeople'slives,moreandmorepeoplebegantolivewithoutInternet.Withthecontinuousdevelopmentofnetworktechnology,networkuniversalcoverage,buildingcorporatenetworkistheinevitablechoicetoenterpriseinformationdevelopment.Withthesizeoftheenterprisesystemandthegradualimprovementanddevelopmentoftheattendantproblems,istoconstantlyimprovethecorporatenetwork,iftheenterprisenetworkistoolarge,thentheIGPcannolongermeettheneedsofenterprise,thentheuseofwhattypesystemsandprotocols,tomakeahugeenterprisenormaloperation,thisisthearticleneedtostudyandexplorecontent.BGPisanexternalgatewayprotocol.RunningtooneautonomoussystemroutingprotocolontheTCPprotocol.IstheonlynetworkprotocolusedtoprocesstheimagesizeoftheInternet,istheonlythatcandealwellwithhavingmultipleconnectionstounrelatedroutingdomainsof.Itenablescommunicationbetweendifferentautonomoussystemsrouter.Therefore,theemergenceoftheBGPprotocolcansolvetheseproblems.ThispaperexploresandstudiesBGPadaptabilityinlargeenterprisenetworksystem.ElaboratingstudiesandexperimentstodemonstratethefeasibilityoftheprincipleoftheprincipleofBGPprotocol.Inthispaper,theexperimentalprogramwithspecificenterprisenetworkinterconnectedtoprovethispoint.LITObyusingsimulationsoftwareH3Ccompanypolicycommand,communicationandinterconnectwithBGPdiscoveryprotocol,andalargecorporateheadquartersandbranchesareabletofreelyexchangevisits.Therefore,theuseofBGPprotocolintermsofthecompany'sbusinessheadquartersandbranchesoftheinterconnectionisIIIfeasible.KeyWords：BGP；CorporateNetwork；Headquarters；Communication安徽新华学院2016届本科毕业论文（设计）IV目录1绪论.........................................................................................................11.1课题研究的背景及意义.....................................................................11.1.1课题研究的背景..............................................................................11.1.2课题研究的意义..............................................................................11.2课题研究的内容.................................................................................21.2.1企业网络功能需求分析..................................................................21.2.2企业网设计要求分析......................................................................21.3本文主要的工作.................................................................................32网络协议原理和仿真软件LITO..........................................................42.1BGP协议的主要特点..........................................................................42.1.1BGP属性分类...................................................................................52.1.2BGP邻居的建立过程.......................................................................62.2课题设计仿真软件LITO...................................................................82.2.1使用SecureCRT连接LITO模拟器...............................................82.2.4使用CRT软件连接模拟器设备...................................................163大型企业网需求分析..........................................................................193.1企业网络需求....................................................................................193.2企业网络需求分析...........................................................................193.2.1宽带性能需求................................................................................193.2.2稳定可靠需求................................................................................203.2.3服务质量需求................................................................................203.2.4网络安全需求................................................................................213.2.5BGP路由技术的必要性.................................................................214基于BGP的企业网络搭建.................................................................23安徽新华学院2016届本科毕业论文（设计）V4.1企业网络互连拓扑...........................................................................234.2企业网络设备规划...........................................................................244.3企业网络IP地址规划....................................................................255基于BGP的企业网络配置和结果分析.............................................295.1主要配置命令....................................................................................295.1.1OSPF配置...................................................................................295.1.2BGP邻居配置.................................................................................295.1.3BGP选路脚本......