This command changes the administrative distance for OSPF routes.
Router(config-router)#distance ospf <intra-area distance><inter-area distance><external distance>
In this example, we will change OSPF administrative distance to 150 for internal routes and 220 for external. Currently, we see OSPF is at its default administrative distance of 110.
R1(config-router)#do show ip route ospf
Here, we change the distance with the distance ospf command.
R1(config)#router ospf 1
Now, we can see the change is reflected in the routing table.
R1(config)#do show ip route ospf