ospf基本配置

步骤一：分别为R1、R2、R3配置接口地址，保证直连； 步骤二：启用OSPF路由协议；R2(config)#router os 100R2(config-router)#router-id 2.2.2.2R2(config-router)#net 202.101.12.2 0.0.0.0 a 0R2(config-router)#net 202.101.23.2 0.0.0.0 a 1（R1，R3同R2配置） R2#sh ip route 1.0.0.0/32 is subnetted, 1 subnetsO 1.1.1.1 [110/65] via 202.101.12.1, 00:00:58, Serial1/3 3.0.0.0/32 is subnetted, 1 subnetsO 3.3.3.3 [110/65] via 202.101.23.3, 00:00:14, Serial1/2（在OSPF中环回口在路由表中是32位主机路由，如果想让之成为你配置的，则需要将环回口类型改为p-to-p） R2#sh ip os neiNeighbor ID Pri State Dead Time Address Interface1.1.1.1 0 FULL/ - 00:00:34 202.101.12.1 Serial1/33.3.3.3 0 FULL/ - 00:00:29 202.101.23.3 Serial1/2