第10章ospf高级配置冯刚

实验时间：实验人：冯刚实验名称：OSPF高级配置实验任务和目标：任务1.按照实验要求连接拓扑。任务2.完成所有网络基本IP配置【环回除外】，并测试连通性。任务3.启动BACKBONEAREA0OSPF进程。任务4.启动STANDARDAREA1OSPF进程。任务5.启动NSSAAREA12OSPF进程，并查看ROUTER7路由表【截图验证】。任务6.在ROUTER1与ROUTER4上完成区域间汇总，并查看ROUTER7路由表【截图验证】。任务7.配置ROUTER2上环回，并启动AREA101OSPF进程，为AREA101配置虚链路，并查看ROUTER7路由表【截图验证】任务8.配置ROUTER3上环回，且发布直连环回进OSPFAS中。并查看ROUTER7路由表【截图验证】。任务9.配置ROUTER6上环回，且配置环回为RIPAS发布进OSPFAS。任务10.查看ROUTER7路由表中外部路由条目【截图验证】。任务11.在ROUTER3与ROUTER6上完成AS外部汇总，并查看ROUTER7路由表中外部路由条目【截图验证】相关命令补充：实验拓扑及网络规划：实验操作过程及配置说明：Router1S0/0<---->Router2S0/0Router1S0/1<---->Router2S0/1Router1S0/2<---->Router3S0/2Router1S0/3<---->Router7S0/2Router2E1/0<---->Router3E1/0Router4S0/0<---->Router5S0/0Router4S0/1<---->Router5S0/1Router4S0/2<---->Router6S0/2Router4S0/3<---->Router7S0/3Router5E1/0<---->Router6E1/0实验结果【可以是截屏图片】：总结和分析、结论：1．IP相关配置。r1(config)#ins0/0r1(config-if)#clockrate64000r1(config-if)#ipadd192.168.1.1255.255.255.252r1(config-if)#noshr1(config-if)#exitr1(config)#ins0/1r1(config-if)#clockrate64000r1(config-if)#ipadd192.168.1.5255.255.255.252r1(config-if)#noshr1(config-if)#exitr1(config)#ins0/2r1(config-if)#clockrate64000r1(config-if)#ipadd192.168.1.9255.255.255.252r1(config-if)#noshr1(config-if)#exitr1(config)#ins0/3r1(config-if)#ipadd10.1.1.2255.255.255.0r1(config-if)#noshr1(config-if)#exitr1(config)#r1(config)#doshowipinbrInterfaceIP-AddressOK?MethodStatusProtocolSerial0/0192.168.1.1YESmanualupdownSerial0/1192.168.1.5YESmanualupdownSerial0/2192.168.1.9YESmanualupdownSerial0/310.1.1.2YESmanualupdownr1(config)#r2(config)#ins0/0r2(config-if)#ipadd192.168.1.2255.255.255.252r2(config-if)#noshr2(config-if)#exitr2(config)#ins0/1r2(config-if)#ipadd192.168.1.6255.255.255.252r2(config-if)#noshr2(config-if)#exitr2(config)#ine1/0r2(config-if)#ipadd192.168.1.13255.255.255.252r2(config-if)#noshr2(config-if)#exitr2(config)#doshowipinbrInterfaceIP-AddressOK?MethodStatusProtocolSerial0/0192.168.1.2YESmanualupupSerial0/1192.168.1.6YESmanualupupSerial0/2unassignedYESunsetadministrativelydowndownSerial0/3unassignedYESunsetadministrativelydowndownEthernet1/0192.168.1.13YESmanualupupEthernet1/1unassignedYESunsetadministrativelydowndownEthernet1/2unassignedYESunsetadministrativelydowndownEthernet1/3unassignedYESunsetadministrativelydowndownr2(config)#r1(config)#doshowipinbrInterfaceIP-AddressOK?MethodStatusProtocolSerial0/0192.168.1.1YESmanualupupSerial0/1192.168.1.5YESmanualupupSerial0/2192.168.1.9YESmanualupdownSerial0/310.1.1.2YESmanualupdownr1(config)#r3(config)#ins0/2r3(config-if)#ipadd192.168.1.10255.255.255.252r3(config-if)#noshr3(config-if)#exitr3(config)#ins0/r3(config)#ine1/0r3(config-if)#ipadd192.168.1.14255.255.255.252r3(config-if)#noshr3(config-if)#exitr3(config)#exitr3#showipinbrInterfaceIP-AddressOK?MethodStatusProtocolSerial0/0unassignedYESunsetadministrativelydowndownSerial0/1unassignedYESunsetadministrativelydowndownSerial0/2192.168.1.10YESmanualupupSerial0/3unassignedYESunsetadministrativelydowndownEthernet1/0192.168.1.14YESmanualupupEthernet1/1unassignedYESunsetadministrativelydowndownEthernet1/2unassignedYESunsetadministrativelydowndownEthernet1/3unassignedYESunsetadministrativelydowndownr3#r4(config)#ins0/0r4(config-if)#clockrate64000r4(config-if)#ipadd192.168.12.1255.255.255.252r4(config-if)#noshr4(config-if)#exitr4(config)#ins0/1r4(config-if)#clockrate64000r4(config-if)#ipadd192.168.12.5255.255.255.252r4(config-if)#noshr4(config-if)#exitr4(config)#r4(config)#ins0/2r4(config-if)#clockrate64000r4(config-if)#ipadd192.168.12.9255.255.255.252r4(config-if)#noshr4(config-if)#exitr4(config)#inr4(config)#ins0/3r4(config-if)#ipadd10.12.12.2255.255.255.0r4(config-if)#noshr4(config-if)#exitr4#showipinbrInterfaceIP-AddressOK?MethodStatusProtocolSerial0/0192.168.12.1YESmanualupupSerial0/1192.168.12.5YESmanualupupSerial0/2192.168.12.9YESmanualupupSerial0/310.12.12.2YESmanualupupr5(config)#ins0/0r5(config-if)#ipadd192.168.12.2255.255.255.252r5(config-if)#noshr5(config-if)#exitr5(config)#ins0/1r5(config-if)#ipadd192.168.12.6255.255.255.252r5(config-if)#noshr5(config-if)#exitr5(config)#ine1/0r5(config-if)#ipadd192.168.12.13255.255.255.252r5(config-if)#noshr5(config-if)#exitr5#showipinbrInterfaceIP-AddressOK?MethodStatusProtocolSerial0/0192.168.12.2YESmanualupupSerial0/1192.168.12.6YESmanualupupSerial0/2unassignedYESunsetadministrativelydowndownSerial0/3unassignedYESunsetadministrativelydowndownEthernet1/0192.168.12.13YESmanualupupEthernet1/1unassignedYESunsetadministrativelydowndownEthernet1/2unassignedYESunsetadministrativelydowndownEthernet1/3unassignedYESunsetadministrativelydowndownr5#r6(config)#ins0/2r6(config-if)#ipadd192.168.12.10255.255.255.252r6(config-if)#noshr6(config-if)#exitr6(config)#inr6(config)#ine1/0r6(config-if)#ipadd192.168.12.14255.255.255.252r6(config-if)#noshr6(config-if)#exitr6(config)#exitr6#showipinbrInterfaceIP-AddressOK?MethodStatusProtocolSerial0/0unassignedYESunsetadministrativelydowndownSerial0/1unassignedYESunsetadministrativelydowndownSerial0/2192.168.12.10YESmanualupupSerial0/3unassignedYESunsetadministrativelydowndownEthernet1/0192.168.12.14YESmanualupupEthernet1/1unassignedYESunsetadministrativelydowndownEthernet1/2unassignedYESunsetadministrativelydowndownEthernet1/3unassignedYESunsetadministrativelydowndownr6#r7(config)#ins0/3r7(config-if)#clockrate64000r7(config-if)#ipadd10.12.12.1255.255.255.0r7(config-if)#noshr7(config-if)#exitr7(config)#ins0/2r7(config-if)#clockrate64000r7(config-if)#ipadd10.1.1.1255.255.255.252r7(config-if)#noshr7(config-if)#exitr7#showipinbrInterfaceIP-AddressOK?MethodStatusProtocolSerial0/0unassignedYESunsetadministrativelydowndownSerial0/1unassignedYESunsetadministrativelydowndownSerial0/210.1.1.1YESmanualupupSerial0/310.12.12.1YESmanualupupr7#2．测试。r1#showiprouteCodes:C-connected,S-static,R-RIP,M-mobile,B-BGPD-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterareaN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2E1-OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo-ODR,P-periodicdownloadedstaticrouteGatewayoflastresortisnotset10.0.0.0/24issubnetted,1subnetsC10.1.1.0isdirectlyconnected,Serial0/3192.168.1.0/30issubnetted,3subnetsC192.168.1.8isdirectlyconnected,Serial0/2C192.168.1.0isdirectlyconnected,Serial0/0C192.168.1.4isdirectlyconnected,Serial0r2#showiprouteCodes:C-connected,S-static,R-RIP,M-mobile,B-BGPD-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterareaN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2E1-OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo-ODR,P-periodicdownloadedstaticrouteGatewayoflastresortisnotset192.168.1.0/30issubnetted,3subnetsC192.168.1.12isdirectlyconnected,Ethernet1/0C192.168.1.0isdirectlyconnected,Serial0/0C192.168.1.4isdirectlyconnected,Serial0/1r3#showiprouteCodes:C-connected,S-static,R-RIP,M-mobile,B-BGPD-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterareaN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2E1-OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo-ODR,P-periodicdownloadedstaticrouteGatewayoflastresortisnotset192.168.1.0/30issubnetted,2subnetsC192.168.1.8isdirectlyconnected,Serial0/2C192.168.1.12isdirectlyconnected,Ethernet1/0r3#r4#showiprouteCodes:C-connected,S-static,R-RIP,M-mobile,B-BGPD-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterareaN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2E1-OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo-ODR,P-periodicdownloadedstaticrouteGatewayoflastresortisnotset192.168.12.0/30issubnetted,3subnetsC192.168.12.4isdirectlyconnected,Serial0/1C192.168.12.0isdirectlyconnected,Serial0/0C192.168.12.8isdirectlyconnected,Serial0/210.0.0.0/24issubnetted,1subnetsC10.12.12.0isdirectlyconnected,Serial0/3r4#r5#showiprouteCodes:C-connected,S-static,R-RIP,M-mobile,B-BGPD-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterareaN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2E1-OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo-ODR,P-periodicdownloadedstaticrouteGatewayoflastresortisnotset192.168.12.0/30issubnetted,3subnetsC192.168.12.4isdirectlyconnected,Serial0/1C192.168.12.0isdirectlyconnected,Serial0/0C192.168.12.12isdirectlyconnected,Ethernet1/0r5#r6#showiprouteCodes:C-connected,S-static,R-RIP,M-mobile,B-BGPD-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterareaN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2E1-OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo-ODR,P-periodicdownloadedstaticrouteGatewayoflastresortisnotset192.168.12.0/30issubnetted,2subnetsC192.168.12.12isdirectlyconnected,Ethernet1/0C192.168.12.8isdirectlyconnected,Serial0/2r6#r7#showiprouteCodes:C-connected,S-static,R-RIP,M-mobile,B-BGPD-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterareaN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2E1-OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo-ODR,P-periodicdownloadedstaticrouteGatewayoflastresortisnotset10.0.0.0/8isvariablysubnetted,2subnets,2masksC10.12.12.0/24isdirectlyconnected,Serial0/3C10.1.1.0/30isdirectlyconnected,Serial0/2r1#ping10.1.1.1Typeescapesequencetoabort.Sending5,100-byteICMPEchosto10.1.1.1,timeoutis2seconds:!!!!!Successrateis100percent(5/5),round-tripmin/avg/max=16/53/112msr1#ping10.1.1.2Typeescapesequencetoabort.Sending5,100-byteICMPEchosto10.1.1.2,timeoutis2seconds:!!!!!Successrateis100percent(5/5),round-tripmin/avg/max=64/112/184msr1#ping192.168.1.1Typeescapesequencetoabort.Sending5,100-byteICMPEchosto192.168.1.1,timeoutis2seconds:!!!!!Successrateis100percent(5/5),round-tripmin/avg/max=48/93/124msr1#ping192.168.1.2Typeescapesequencetoabort.Sending5,100-byteICMPEchosto192.168.1.2,timeoutis2seconds:!!!!!Successrateis100percent(5/5),round-tripmin/avg/max=32/59/104msr1#ping192.168.1.5Typeescapesequencetoabort.Sending5,100-byteICMPEchosto192.168.1.5,timeoutis2seconds:!!!!!Successrateis100percent(5/5),round-tripmin/avg/max=64/110/200msr1#ping192.168.1.6Typeescapesequencetoabort.Sending5,100-byteICMPEchosto192.168.1.6,timeoutis2seconds:!!!!!Successrateis100percent(5/5),round-tripmin/avg/max=16/56/80msr1#ping192.168.1.9Typeescapesequencetoabort.Sending5,100-byteICMPEchosto192.168.1.9,timeoutis2seconds:!!!!!Successrateis100percent(5/5),round-tripmin/avg/max=60/96/200msr1#ping192.168.1.10Typeescapesequencetoabort.Sending5,100-byteICMPEchosto192.168.1.10,timeoutis2seconds:!!!!!Successrateis100percent(5/5),round-tripmin/avg/max=20/54/120msr1#ping10.1.1.1Typeescapesequencetoabort.Sending5,100-byteICMPEchosto10.1.1.1,timeoutis2seconds:!!!!!Successrateis100percent(5/5),round-tripmin/avg/max=32/68/104msr1#ping10.1.1.2Typeescapesequencetoabort.Sending5,100-byteICMPEchosto10.1.1.2,timeoutis2seconds:!!!!!Successrateis100percent(5/5),round-tripmin/avg/max=64/82/116msr1#ping192.168.1.13Typeescapesequencetoabort.Sending5,100-byteICMPEchosto192.168.1.13,timeoutis2seconds:.....Successrateis0percent(0/5)总结：有一个不通是因为。没有配置路由协议。3.启动BACKBONEAREA0OSPF进程r7(config)#routerospf700r7(config-router)#router-id7.7.7.7r7(config-router)#network10.12.12.10.0.0.0area0r7(config-router)#network10.1.1.10.0.0.0area0r7(config-router)#exitr7(config)#4.启动STANDARDAREA1OSPF进程。r1(config)#routerospf100r1(config-router)#router-id1.1.1.1r1(config-router)#network192.168.1.10.0.0.0area1r1(config-router)#network192.168.1.50.0.0.0area1r1(config-router)#network192.168.1.90.0.0.0area1r1(config-router)#network10.1.1.20.0.0.0area0r2(config)#routerospf200r2(config-router)#router-id2.2.2.2r2(config-router)#network192.168.1.20.0.0.0area1r2(config-router)#network192.168.1.60.0.0.0area1r2(config-router)#network192.168.1.130.0.0.0area1r2(config-router)#exitr3(config)#routerospf300r3(config-router)#router-id3.3.3.3r3(config-router)#network192.168.1.100.0.0.0area1r3(config-router)#network192.168.1.140.0.0.0area1r3(config-router)#exitr3(config)#5.启动NSSAAREA12OSPF进程，并查看ROUTER7路由表r4(config)#routerospf400r4(config-router)#router-id4.4.4.4r4(config-router)#network192.168.12.10.0.0.0area12r4(config-router)#network192.168.12.50.0.0.0area12r4(config-router)#network192.168.12.90.0.0.0area12r4(config-router)#network10.12.12.20.0.0.0area0r4(config-router)#area12nssar4(config-router)#exitr4(config)#exit测试。r5(config)#routerospf500r5(config-router)#router-id5.5.5.5r5(config-router)#network192.168.12.20.0.0.0area12r5(config-router)#network192.168.12.60.0.0.0area12r5(config-router)#network192.168.12.130.0.0.0area12r5(config-router)#area12nssar6(config)#routerospf600r6(config-router)#router-id6.6.6.6r6(config-router)#network192.168.12.100.0.0.0area12r6(config-router)#network192.168.12.140.0.0.0area12r6(config-router)#area12nssar6(config-router)#exitr6(config)#exitr2#showiprouteCodes:C-connected,S-static,R-RIP,M-mobile,B-BGPD-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterareaN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2E1-OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo-ODR,P-periodicdownloadedstaticrouteGatewayoflastresortisnotset192.168.12.0/30issubnetted,4subnetsOIA192.168.12.4[110/256]via192.168.1.5,00:25:41,Serial0/1[110/256]via192.168.1.1,00:25:41,Serial0/0OIA192.168.12.0[110/256]via192.168.1.5,00:25:41,Serial0/1[110/256]via192.168.1.1,00:25:41,Serial0/0（area12nssa）OIA192.168.12.12[110/266]via192.168.1.5,00:12:59,Serial0/1[110/266]via192.168.1.1,00:12:59,Serial0/0OIA192.168.12.8[110/256]via192.168.1.5,00:25:41,Serial0/1[110/256]via192.168.1.1,00:25:41,Serial0/010.0.0.0/8isvariablysubnetted,3subnets,2masksOIA10.12.12.0/24[110/192]via192.168.1.5,00:52:58,Serial0/1[110/192]via192.168.1.1,00:52:58,Serial0/0OIA10.1.1.0/30[110/192]via192.168.1.5,00:52:58,Serial0/1(area1)[110/192]via192.168.1.1,00:52:58,Serial0/0OIA10.1.1.0/24[110/128]via192.168.1.5,00:53:00,Serial0/1[110/128]via192.168.1.1,00:53:00,Serial0/0192.168.1.0/30issubnetted,4subnetsO192.168.1.8[110/74]via192.168.1.14,00:53:00,Ethernet1/0C192.168.1.12isdirectlyconnected,Ethernet1/0C192.168.1.0isdirectlyconnected,Serial0/0C192.168.1.4isdirectlyconnected,Serial0/1r2#r6#showiproute(area12)Codes:C-connected,S–sttic,R-RIP,M-mobile,B-BGPD-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterareaN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2E1-OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo-ODR,P-periodicdownloadedstaticrouteGatewayoflastresortisnotset192.168.12.0/30issubnetted,4subnetsO192.168.12.4[110/128]via192.168.12.9,00:00:07,Serial0/2O192.168.12.0[110/128]via192.168.12.9,00:00:07,Serial0/2C192.168.12.12isdirectlyconnected,Ethernet1/0C192.168.12.8isdirectlyconnected,Serial0/210.0.0.0/8isvariablysubnetted,3subnets,2masksOIA10.12.12.0/24[110/128]via192.168.12.9,00:00:07,Serial0/2OIA10.1.1.0/30[110/192]via192.168.12.9,00:00:07,Serial0/2OIA10.1.1.0/24[110/256]via192.168.12.9,00:00:07,Serial0/2192.168.1.0/30issubnetted,4subnetsOIA192.168.1.8[110/256]via192.168.12.9,00:00:07,Serial0/2OIA192.168.1.12[110/266]via192.168.12.9,00:00:07,Serial0/2OIA192.168.1.0[110/256]via192.168.12.9,00:00:07,Serial0/2OIA192.168.1.4[110/256]via192.168.12.9,00:00:23,Serial0/2r6#r7#showiprouteCodes:C-connected,S-static,R-RIP,M-mobile,B-BGPD-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterareaN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2E1-OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo-ODR,P-periodicdownloadedstaticrouteGatewayoflastresortisnotset192.168.12.0/30issubnetted,4subnetsOIA192.168.12.4[110/128]via10.12.12.2,00:03:14,Serial0/3OIA192.168.12.0[110/128]via10.12.12.2,00:03:14,Serial0/3OIA192.168.12.12[110/138]via10.12.12.2,00:00:49,Serial0/3OIA192.168.12.8[110/128]via10.12.12.2,00:03:14,Serial0/310.0.0.0/24issubnetted,2subnetsC10.12.12.0isdirectlyconnected,Serial0/3C10.1.1.0isdirectlyconnected,Serial0/2192.168.1.0/30issubnetted,4subnetsOIA192.168.1.8[110/128]via10.1.1.2,00:03:14,Serial0/2OIA192.168.1.12[110/138]via10.1.1.2,00:03:14,Serial0/2OIA192.168.1.0[110/128]via10.1.1.2,00:03:14,Serial0/2OIA192.168.1.4[110/128]via10.1.1.2,00:03:14,Serial0/2r7#6.在ROUTER1与ROUTER4上完成区域间汇总，并查看ROUTER7路由表r1(config)#routerospf1r1(config-router)#area1range192.168.1.0255.255.255.240r4(config)#routerospf4r4(config-router)#area12range192.168.12.0255.255.255.24000:05:49,Serial0/2r7#showiprouteCodes:C-connected,S-static,R-RIP,M-mobile,B-BGPD-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterareaN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2E1-OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo-ODR,P-periodicdownloadedstaticrouteGatewayoflastresortisnotset192.168.12.0/28issubnetted,1subnetsOIA192.168.12.0[110/128]via10.12.12.2,00:00:41,Serial0/310.0.0.0/24issubnetted,2subnetsC10.12.12.0isdirectlyconnected,Serial0/3C10.1.1.0isdirectlyconnected,Serial0/2192.168.1.0/28issubnetted,1subnetsOIA192.168.1.0[110/128]via10.1.1.2,00:01:25,Serial0/2r7#.7。配置ROUTER2上环回，并启动AREA101OSPF进程，为AREA101配置虚链路，并查看ROUTERr2(config)#inlo0r2(config-if)#ipadd192.168.101.101255.255.255.240r2(config-if)#noshr2(config-if)#exitr2(config)#routerospf200r2(config-router)#network192.168.101.1010.0.0.0area101r2(config-router)#exitr2(config)#exitr2(config)#routerospf200r2(config-router)#area1virtual-link1.1.1.1r2(config-router)#exitr1(config)#routerospf100r1(config-router)#area1virtual-link2.2.2.2r1(config-router)#exit#r7#showiprouteCodes:C-connected,S-static,R-RIP,M-mobile,B-BGPD-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterareaN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2E1-OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo-ODR,P-periodicdownloadedstaticrouteGatewayoflastresortisnotset192.168.12.0/28issubnetted,1subnetsOIA192.168.12.0[110/128]via10.12.12.2,00:06:48,Serial0/310.0.0.0/24issubnetted,2subnetsC10.12.12.0isdirectlyconnected,Serial0/3C10.1.1.0isdirectlyconnected,Serial0/2192.168.1.0/24isvariablysubnetted,5subnets,2masksOIA192.168.1.8/30[110/202]via10.1.1.2,00:06:48,Serial0/2OIA192.168.1.12/30[110/138]via10.1.1.2,00:06:48,Serial0/2OIA192.168.1.0/30[110/192]via10.1.1.2,00:06:48,Serial0/2OIA192.168.1.0/28[110/128]via10.1.1.2,00:06:48,Serial0/2OIA192.168.1.4/30[110/192]via10.1.1.2,00:06:48,Serial0/2192.168.101.0/32issubnetted,1subnetsOIA192.168.101.101[110/129]via10.1.1.2,00:06:48,Serial0/2r7#总结：R7上面的路由表发生了变化，先前的汇总失效了，是因为在通过以上的配置，R2变成了一台ASB路由器。因此，处理方法在下：r2(config)#routerospf200r2(config-router)#area1range192.168.1.0255.255.255.240（在R2上面重新进行汇总）r2(config-router)#exitr7#showiprouteCodes:C-connected,S-static,R-RIP,M-mobile,B-BGPD-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterareaN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2E1-OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo-ODR,P-periodicdownloadedstaticrouteGatewayoflastresortisnotset192.168.12.0/28issubnetted,1subnetsOIA192.168.12.0[110/128]via10.12.12.2,00:14:57,Serial0/310.0.0.0/24issubnetted,2subnetsC10.12.12.0isdirectlyconnected,Serial0/3C10.1.1.0isdirectlyconnected,Serial0/2192.168.1.0/28issubnetted,1subnetsOIA192.168.1.0[110/128]via10.1.1.2,00:00:13,Serial0/2192.168.101.0/32issubnetted,1subnetsOIA192.168.101.101[110/129]via10.1.1.2,00:14:57,Serial0/2r7#8.配置ROUTER3上环回，且发布直连环回进OSPFAS中。并查看ROUTER7路由表r3(config)#inlo0r3(config-if)#ipadd172.26.1.1255.255.255.240r3(config-if)#noshr3(config-if)#exitr3(config)#inlo1r3(config-if)#ipadd172.26.1.17255.255.255.240r3(config-if)#noshr3(config-if)#exitr3(config)#inlo2r3(config-if)#ipadd172.26.1.33255.255.255.240r3(config-if)#noshr3(config-if)#exitr3(config)#inlo3r3(config-if)#ipadd172.26.1.49255.255.255.240r3(config-if)#exitr3(config)#exitr3(config-router)#redistributeconnectedsubnets发布直连环回进OSPF）r3(config-router)#exitr3(config)#exitr7#showiprouteCodes:C-connected,S-static,R-RIP,M-mobile,B-BGPD-EIGRP,EX-EIGRPexternal,O-OSPF,IA-OSPFinterareaN1-OSPFNSSAexternaltype1,N2-OSPFNSSAexternaltype2E1-OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,L1-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo-ODR,P-periodicdownloadedstaticrouteGatewayoflastresortisnotset192.168.12.0/28issubnetted,1subnetsOIA192.168.12.0[110/128]via10.12.12.2,00:04:0