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1、基本IP规划R1r1(config)#ints0/0r1(config-if)#ipadd192.168.12.1255.255.255.0r1(config-if)#noshutr1(config)#intloopback0r1(config-if)#ipadd1.1.1.1255.255.255.0R2r2(config)#ints0/0r2(config-if)#ipadd192.168.12.2255.255.255.0r2(config-if)#noshutr2(config)#ints0/1r2(config-if)#ipadd192.168.23.2255.255.255.
2、0r2(config-if)#noshutR3r3(config)#ints0/1r3(config-if)#ipadd192.168.23.3255.255.255.0r3(config-if)#noshutr3(config)#intloopback0r3(config-if)#ipadd3.3.3.3255.255.255.0路由协议EIGRPR1r1(config)#routereigrp90r1(config-router)#network192.168.12.0r1(config-router)#network1.0.0.0r1(config-router)#noauto-s
3、ummaryR2r2(config)#routereigrp90r2(config-router)#noauto-summaryr2(config-router)#network192.168.12.0r2(config-router)#network192.168.23.0R3r3(config)#routereigrp90r3(config-router)#network192.168.23.0r3(config-router)#network3.0.0.0r3(config-router)#noauto-summary查看metric值r1#showiprouteGatewayof
4、lastresortisnotsetC192.168.12.0/24isdirectlyconnected,Serial0/01.0.0.0/24issubnetted,1subnetsC1.1.1.0isdirectlyconnected,Loopback03.0.0.0/24issubnetted,1subnetsD3.3.3.0[90/2809856]via192.168.12.2,00:00:16,Serial0/0D192.168.23.0/24[90/2681856]via192.168.12.2,00:03:23,Serial0/0r1#showints0/0Serial0
5、/0isup,lineprotocolisupHardwareisM4TInternetaddressis192.168.12.1/24MTU1500bytes,BW1544Kbit,DLY20000usec带宽为1544K，延迟为20000r1#showintloo0Loopback0isup,lineprotocolisupHardwareisLoopbackInternetaddressis1.1.1.1/24MTU1514bytes,BW8000000Kbit,DLY5000usec,Metric=(10000000/1544+45000/10)*256=2809856R1上的延
6、迟总和等于R3的loopback0口的延迟加R2的s0/1和R1的S0/0的延迟总和。修改metric值R1上r1(config)#ints0/0r1(config-if)#delayr1(config-if)#delay30000r1#showints0/0Serial0/0isup,lineprotocolisupHardwareisM4TInternetaddressis192.168.12.1/24MTU1500bytes,BW1544Kbit,DLY300000usec,r1#showiprouteGatewayoflastresortisnotsetC192.168.12.0
7、/24isdirectlyconnected,Serial0/01.0.0.0/24issubnetted,1subnetsC1.1.1.0isdirectlyconnected,Loopback03.0.0.0/24issubnetted,1subnetsD3.3.3.0[90/9977856]via192.168.12.2,00:02:29,Serial0/0D192.168.23.0/24[90/9849856]via192.
