O IA 172.16.0.0/16 [110/192] via 219.146.242.1, 00:00:02, Serial0/1 O IA 172.19.0.0/16 [110/129] via 219.146.242.1, 00:00:02, Serial0/1 O IA 172.18.0.0/16 [110/193] via 219.146.242.1, 00:00:02, Serial0/1 ....
通过distance 40命令修改之后，所有的通过ospf 100学习来的路由AD变为我们指定的40
O N2 102.0.0.0/8 [110/30] via 219.146.244.1, 00:00:02, FastEthernet1/4 O N2 108.0.0.0/8 [110/30] via 219.146.244.1, 00:00:02, FastEthernet1/4 O N2 106.0.0.0/8 [110/30] via 219.146.244.1, 00:00:03, FastEthernet1/4 O N2 107.0.0.0/8 [110/30] via 219.146.244.1, 00:00:03, FastEthernet1/4 O N2 105.0.0.0/8 [110/30] via 219.146.244.1, 00:00:03, FastEthernet1/4 ......... router ospf 100
redistribute rip sub metric 30
结果的意思表明是通过ospf 100学习到的RIP路由的metric更改为30，一定要理解含义
跟前面的distance语法区分开。
