What command should be used to check OSPF routing tables?

The command to check OSPF routing tables is “show ip route ospf.” This command specifically filters the routing table to display only the routes that have been learned via the OSPF protocol. When you issue this command, it provides vital information about OSPF routes, including the OSPF route types (intra-area, inter-area, external, etc.), the metric associated with each route, and the next-hop addresses for those routes.

While other commands such as “show ip protocols” and “show ip route” provide valuable insights into routing protocols and general routing information, they do not focus solely on the routes learned from OSPF. The “show ospf neighbors” command shows the neighbors that are part of the OSPF adjacency but does not display the actual routing information. Therefore, "show ip route ospf" is the most relevant and precise command for viewing OSPF-specific routing entries.