1、找出四台2811类的路由器，并将它们按照一定的顺序排开来，并将配置线连接起来，如下图所示：
2、配置路由器r1和r2，配置命令如下：r1#conf tEnter configuration commands, one per line. End with C绿覆冗猩NTL/Z.r1(config)#router ospf 1r1(config-router)#router-id 1.1.1.1r1(config-router)#network 1.1.1.0 255.255.255.0 area 1r1(config-router)#network 192.168.12.0 255.255.255.0 area 1r2#conf tEnter configuration commands, one per line. End with CNTL/Z.r2(config-router)#router ospf 1r2(config-router)#router-id 2.2.2.2r2(config-router)#network 192.168.12.0 255.255.255.0 area 1r2(config-router)#network 192.168.23.0 255.255.255.0 area 0r2(config-router)#network 2.2.2.0 255.255.255.0 area 0结果如下图所示：
3、配置路由器r3和r4，配置命令如下图所示：r3>enabler3#conf tEnter configuration comma荏鱿胫协nds, one per line. End with CNTL/Z.r3(config-router)#router ospf 1r3(config-router)#router-id 3.3.3.3r3(config-router)#network 192.168.23.0 255.255.255.0 area 0r3(config-router)#network 192.168.34.0 255.255.255.0 area 0r3(config-router)#network 3.3.3.0 255.255.255.0 area 0r4#conf tr4(config-router)#router ospf 1r4(config-router)#router-id 4.4.4.4r4(config-router)#network 192.168.34.0 0.0.0.255 area 2r4(config-router)#redistribute connected subnets结果如下图所示：
4、实验调试，用“show iP route”命令测试，如下图所示：
5、用“show ip ospf database”命令查看路由器r1和r2的配置信息，如下图所示：
