EIGRP负载均衡实验-图文

Step4:通过FS,实现不等价负载均衡.R2(config#routereigrp100R2(config-router#variance2R2#showipprotocol…………..EIGRPmaximummetricvariance2只要比”最小FD(2681856”的2倍(5363712小的其他FS路径,都可以纳入不等价负载均衡的范围.最终,拓扑表不会有变化,但路由表中已经实现了不等价负载均衡.R2#showiprouteeigrpD172.2.13.0[90/2707456]via172.1.24.4,00:00:09,Serial1/1[90/2681856]via172.1.12.1,00:00:09,Serial1/0不等价负载均衡的发包大致比例:R2#showiproute172.2.13.0………………….172.1.24.4,from172.1.24.4,00:01:30ago,viaSerial1/1Routemetricis2707456,trafficsharecountis119---------每发出119个数据包转到另一条路径………………….*172.1.12.1,from172.1.12.1,00:01:30ago,viaSerial1/0Routemetricis2681856,trafficsharecountis120---------每发出120个数据包转到另一条路径6Step1:在R4上查看详细拓扑表(拓扑表显示的是Successor和FS,若要查找非FS路径应查找详细拓扑表,R4去往172.2.13.0/24这个网络有两条路径.R4#showipeigrptopologydetail-linksP172.2.13.0/24,1successors,FDis2195456,serno48via172.1.14.1(2195456/2169856,FastEthernet0/0via172.1.24.2(3193856/2681856,Serial1/0Step2:当前R2选择Metric值最小的路径,作为最佳路径,进入路由表.R2#showiprouteD172.2.13.0[90/2681856]via172.1.12.1,00:24:52,Serial1/0Step3:观察R4在没有FS下的收敛速度.R4#ping172.2.13.3repeat1000!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!切换到R1,shutdownfastethernet0/0接口R1(config#interfacefastethernet0/0R1(config-if#shutdown观察网络中断时间.8Step4:关于不等价负载均衡即使调整R4的variance为2,由于R2不是R4到达目标网络的FS,所以R4也不会以R2作为不等价负载均衡的路径.R4(config-router#variance2检查:R4#showiprouteD