CCNP必做实验之-OSPF的hello包影响条件实验.doc

基本IP规划（略）启用路由协议R1r1(config)#router ospf 110r1(config-router)#router-id 1.1.1.1r1(config-router)#network 1.1.1.0 0.0.0.255 area 0r1(config-router)#network 192.168.10.0 0.0.0.255 area 0R2r2(config)#router ospf 110r2(config-router)#router-id 2.2.2.2r2(config-router)#network 2.2.2.0 0.0.0.255 area 0r2(config-router)#network 192.168.10.0 0.0.0.255 area 0*Mar 1 00:05:10.931: %OSPF-5-ADJCHG: Process 110, Nbr 2.2.2.2 on Serial0/1 from LOADING to FULL, Loading Done可见邻居关系已经建立起来1.修改hello时间r1(config)#int s0/1r1(config-if)#ip ospf hello-interval 15r1(config-if)#endr1#show ip ospf int s0/1Serial0/1 is up, line protocol is up Internet Address 192.168.10.1/24, Area 0 Process ID 110, Router ID 1.1.1.1, Network Type POINT_TO_POINT, Cost: 64 Transmit Delay is 1 sec, State POINT_TO_POINT, Timer intervals configured, Hello 15, Dead 60, Wait 60, Retransmit 5可见hello时间改为15秒*Mar 1 00:09:37.603: %OSPF-5-ADJCHG: Process 110, Nbr 2.2.2.2 on Serial0/1 from FULL to DOWN, Neighbor Down: Dead timer expired可见邻居关系失败了2.修改dead时间r1(config)#int s0/1r1(config-if)#ip ospf dead-interval 60r1(config-if)#end*Mar 1 00:13:57.627: %OSPF-5-ADJCHG: Process 110, Nbr 2.2.2.2 on Serial0/1 from FULL to DOWN, Neighbor Down: Dead timer expired可见邻居关系down掉了3.修改area区域R1r1(config)#router ospf 110r1(config-router)#router-id 1.1.1.1r1(config-router)#network 1.1.1.0 0.0.0.255 area0r1(config-router)#network 192.168.10.0 0.0.0.255 area 0R2r2(config)#router ospf 110r2(config-router)#router-id 2.2.2.2r2(config-router)#network 2.2.2.0 0.0.0.255 area 1r2(config-router)#network 192.168.10.0 0.0.0.255 area 1*Mar 1 00:09:06.479: %OSPF-5-ADJCHG: Process 110, Nbr 1.1.1.1 on Serial0/1 from FULL to DOWN, Neighbor Down: Interface down or detached可见邻居关系down掉了，因为在不同区域4.修改子网掩码R1r1(config)#router ospf 110r1(config-router)#router-id 1.1.1.1r1(config-router)#network 192.168.10.0 0.0.0.255 area 0r1(config-router)#network 1.1.1.0 0.0.0.255 area 0r1(config-router)#endR2r2(config)#router ospf 110r2(config-router)#router-id 2.2.2.2r2(config-router)#network 192.168.10.0 0.0.0.255 area 0r2(config-router)#network 2.2.2.0 0.0.0.255 area 0r2(config-router)#endR1r1(config)#int e0/1r1(config-if)#ip add 192.168.10.1 255.255.255.252r1(config-if)#no shut*Mar 1 00:04:45.291: %OSPF-5-ADJCHG: Process 110, Nbr 2.2.2.2 on Ethernet0/1 from FULL to DOWN, Neighbor Down: Interface down or detached可见邻居down掉，因为两个以太接口的子网掩码不相同。5.修改MTUr1(config)#int s0/1r1(config-if)#ip mtu 1000r1(config-if)#end1#sh ip int s0/1 Serial0/1 is up, line protocol is up Internet address is 192.168.10.1/24 Broadcast address is 255.255.255.255 Address determined by setup command MTU is 1000 bytes*Mar 1 00:20:23.047: %SYS-5-CONFIG_I: