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1、Ip-defaultnetwork实验目的：验证ip-defaultnetwork的工作原理及实验过程实验拓扑：Lo:3.3.3.3/2423.1.1.0/2412.1.1.0/24Lo:1.1.1.1/24R1R2R3Lo:2.2.2.2/24S2/0S1/0S2/0S1/0网络边界实验过程：基本配置R1：hostnameR1!interfaceLoopback0ipaddress1.1.1.1255.255.255.0!interfaceSerial1/0ipaddress12.1.1.1255.255.255.0serialrestart-del
2、ay0!R2：hostnameR2!interfaceLoopback0ipaddress2.2.2.2255.255.255.0!interfaceSerial1/0ipaddress23.1.1.2255.255.255.0serialrestart-delay0!interfaceSerial2/0ipaddress12.1.1.2255.255.255.0serialrestart-delay0!R3：hostnameR3!interfaceLoopback0ipaddress3.3.3.3255.255.255.0!interfaceSeri
3、al2/0ipaddress23.1.1.3255.255.255.0serialrestart-delay0!实验配置R1：routereigrp100network1.1.1.00.0.0.255network12.1.1.00.0.0.255auto-summary!R2：routereigrp100network12.1.1.00.0.0.255network23.1.1.00.0.0.255//想想其特别之处auto-summary!ipclasslessipdefault-network23.0.0.0//通告默认路由配置iproute0.
4、0.0.00.0.0.023.1.1.3//与外网通信的静态默认路由配置noiphttpservernoiphttpsecure-server!R3：ipclasslessiproute0.0.0.00.0.0.023.1.1.2//与内网通信的静态路由配置（通信是双向的）noiphttpservernoiphttpsecure-server!实验结论：1.实验详细说明：此实验是用R1模拟内网，R2和R3模拟网络边界，把R1和R2运行在EIGRP100内，R2和R3之间的通信是通过设置静态默认路由实现，R1与外网通信是通过R2通告的EIGRP默认路由完
5、成的，R1与所有未知目的网段的通信都会通过R2实现，即R1要实现与外界的通信，若路由表中没有目的网段的路由，则会把包掷给R2。2.以上实验配置得出的实验信息：R1#shiprouteGatewayoflastresortis12.1.1.2tonetwork23.0.0.01.0.0.0/8isvariablysubnetted,2subnets,2masksC1.1.1.0/24isdirectlyconnected,Loopback0D1.0.0.0/8isasummary,00:07:54,Null0D*23.0.0.0/8[90/2681856
6、]via12.1.1.2,00:06:48,Serial1/012.0.0.0/8isvariablysubnetted,2subnets,2masksC12.1.1.0/24isdirectlyconnected,Serial1/0D12.0.0.0/8isasummary,00:07:54,Null0R2#shiprouteGatewayoflastresortis23.1.1.3tonetwork0.0.0.0D1.0.0.0/8[90/2297856]via12.1.1.1,00:09:12,Serial2/02.0.0.0/24issubne
7、tted,1subnetsC2.2.2.0isdirectlyconnected,Loopback0*23.0.0.0/8isvariablysubnetted,2subnets,2masksC23.1.1.0/24isdirectlyconnected,Serial1/0D*23.0.0.0/8isasummary,00:09:01,Null012.0.0.0/8isvariablysubnetted,2subnets,2masksC12.1.1.0/24isdirectlyconnected,Serial2/0D12.0.0.0/8isasumma
8、ry,00:09:01,Null0S*0.0.0.0/0[1/0]via23.1.1.3R3#
