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1、Area0192.168.2.243/28192.168.2.251/28A门172.16.128.0/24172.16.130.0/24172.16.138.0/24R1和R4为ASBRR2和R3为ABR10.1.1.0/24现在要求R1上不能学习到area0area2和10.1.1.0的路由R2上学习到的172网段的路由只能有一条而且在路由上的标识为“ON1"R2上学习到的192.168.3.0的路由只能有一条路由一配置：Router(config)#hostR1Rl(config-line)#exitRl(
2、config)#ine0/0Rl(config-if)#ipadd192.168.1.1255.255.255.252Rl(config-if)#noshutRl(config-if)#ineO/1Rl(config-if)#ipadd172.16.12&1255.255.255.0Rl(config-if)#noshutRl(config-if)#ineO/2Rl(config-if)#ipadd172.16」30」255.255.255.0R1(config-if)#noshutRl(config-if)#i
3、ne0/3Rl(config-if)#ipadd172.16.13&1255.255.255.0R1(config-if)#noshutRl(config-if)#routerospf1R1(config-router)#network192.16&1.00.0.0.3area1R1(config-router)#exitR1(config)#routerripR1(config-router)#network172.16.0.0R1(config-router)#exitR1(config)#doshowipo
4、spfneighborInterfaceEthernetO/ONeighborIDPriStateDeadTimeAddress192.16&2.2511FULL/DR00:00:36192.16&1.2Rl(config)#doshowiprouteCodes:C・connected,S-static,R-RIP,M-mobile,B-BGPD・EIGRP,EX・EIGRPexternal,O・OSPF,IA・OSPFinterareaN1・OSPFNSSAexternaltype1,N2-OSPFNSSAex
5、ternaltype2El・OSPFexternaltype1,E2-OSPFexternaltype2i-IS-IS,su-IS-ISsummary,LI-IS-ISlevel-1,L2-IS-ISlevel-2ia-IS-ISinterarea,*-candidatedefault,U-per-userstaticrouteo・ODR,P-periodicdownloadedstaticrouteGatewayoflastresortisnolset172.16.0.0/24issubnetted,3subn
6、etsC172.16.138.0isdirectlyconnected,EthernetO/3C172.16.128.0isdirectlyconnected,EthernetO/1C172.16.130.0isdirectlyconnected,EthernetO/2192.168.1.0/30issubnetted,1subnetsC192」68」.0isdirectlyconnected,EthernetO/O192」68.2.0/28issubnetted,1subnetsOIA192.168.2.240
7、[110/20]via192.168.1.2,()0:01:33,EthernetO/O192」68.3.0/24isvariablysubnetted,2subnets,2masksOIA192.16&3.0/25[110/40]via192.168.1.2,00:01:09,EthernetO/OOIA192」68.3.248/30[110/30]via192.168.1.2,00:01:23,EthernetO/ORl(config)#routerospf1R1(config-router)#redistr
8、ibuteripsubnetsmetric3()metric-type1R1(config-router)#exitR1(config)#routerripR1(config-router)Redistributeospf1metric2Rl(config-router)#passive-interfacee0/0R1(config-router)#exitRl(conf
