用命令行配置OSPF路由协议

拓扑图如上图所示，用命令行配置4台路由器的OSPF路由协议

打开命令行，输入下图所示的命令，保存退出后即配置成功

Router>enable
Router#config ter
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#router ospf 11                                //启动ID为11的ospf进程
Router(config-router)#network 192.1.1.0 0.0.0.255 area 1
Router(config-router)#network 192.1.2.0 0.0.0.255 area 1
Router(config-router)#network 192.1.4.0 0.0.0.255 area 1
Router(config-router)#network 192.1.6.0 0.0.0.255 area 1    //定义参与OSPF进程的接口或网络
Router(config-router)#exit
Router(config)#

 同理，配置其他三台路由器

Router>enable
Router#config ter
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#router ospf 22
OSPF process 22 cannot start. There must be at least one "up" IP interface
Router(config-router)#network 192.1.2.0 0.0.0.255 area 1
Router(config-router)#network 192.1.3.0 0.0.0.255 area 1
Router(config-router)#exit
Router(config)#

Router>enable
Router#config ter
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#router ospf 33
OSPF process 33 cannot start. There must be at least one "up" IP interface
Router(config-router)#network 192.1.4.0 0.0.0.255 area 1
Router(config-router)#network 192.1.5.0 0.0.0.255 area 1
Router(config-router)#exit
Router(config)#

Router>enable
Router#config ter
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#router ospf 44
OSPF process 33 cannot start. There must be at least one "up" IP interface
Router(config-router)#network 192.1.4.0 0.0.0.255 area 1
Router(config-router)#network 192.1.5.0 0.0.0.255 area 1
Router(config-router)#exit
Router(config)#

配置好后，在拓扑图上配置四台路由器的接口，然后配置好DNS服务器，填写两台PC的IP，就能用两台PC上服务器的网站