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1、园区交换式网络的组建—接入层与汇聚层XXX摘要局域网组建普遍采用包括核心层、汇聚层、接入层的三层交换网络模型其中三层交换和愕娜技术被广泛应用于各种网络中主机通过和这种结构的交换式局域网的连接,同外网进行通信和数据的交流。在每一层中都按照虚拟局域网对端口进行相应VLAN划分,以设立网关,方便对交换机不同VLAN的端口信息交流进行控制。核心层的高速转发的性能,为能够把在汇聚层所汇聚的网内大量数据和信息与外网进行安全快速的通信创造了条件。实现该性能,需要在核心层交换机按照ARRP协议进行分组连接,按优先级
2、的高低选定这层中即将用于和外网进行通信的交换机,以及作为备份的交换机,当然,这于整个通信过程来说是透明的,在整个系统看来它只是根据不同的VLAN选择了不同的ARRP组来对数据进行转发,其中的路由选择由核心层独立完成。关键词:交换机,路由器,三层交换,VLAN技术,ARRP分组,转发31Parkexchangenetworkdesignandpractice—AccessLayer,DistributionLayerAbstractThelocalareanetworksetsupgenerallyu
3、sesincludingthecorelayer,thedistributionlayer,theaccesslayerthreeexchangesnetworkmodel,"Threeexchange"IswidelyappliedwiththeVLANtechnologyineachkindofnetworkMainenginethroughandthiskindofstructureexchangetypelocalareanetworkconnection,Carriesonthecorre
4、spondenceandthedataexchangewiththeoutsidenet.AlldeferstothevirtuallocalareanetworkineachtocarryonthecorrespondingVLANdivisiontotheport,setsupthegateway,andfacilitatescarriesonthecontroltotheswitchboarddifferentVLANportinformationexchange.Thecorelayerhi
5、ghspeedretransmitstheperformance,forcouldinthenetwhichgatheredinthedistributionlayerinstitutethemassdatesandtheinformationwiththeoutsidenetcarriesonthesafefastcorrespondencetocreatethecondition.Realizesthisperformance,needstocarryonthegroupingconnectio
6、ninthecorelayerswitchboardaccordingtotheARRPagreement,accordingtothepriorityheightdesignatedinthissoonusesinwiththeoutsidenettocarryonthecorrespondencetheswitchboard,aswellasthebackupswitchboard,certainly,thistotheentirecourseofcommunicationssaidistran
7、sparent,intheoverallsystemlookedlikeitonlywaschoosesthedifferentARRPgroupaccordingtodifferentVLANtocomethelogarithmaccordingtocarryonretransmits,routingcompletedbythecorelayerindependence.Keywords:Switch,Router,Threeexchanges,VLAN(VirtualLocalAreaNetwo
8、rk),ARRPGrouping,Retransmits31目录1.绪论12.课题背景22.1题目来源22.2园区交换式网络的目的22.2.1什么是三层交换32.2.2三层交换原理32.2.3三层交换机种类42.3交换式网络现状52.4交换式网络的优势62.4.1容易配置和安装72.4.2换式局域网性能好72.4.3提供点对点的通信72.4.4高局域网网速与容量72.4.5网络更加健壮92.4.6管理广播风暴102.4.7有效控制网络资源的访问102.4.8分子网而不