Cisco Certified Network Associate (CCNA) Practice Exam

Which command is used to view the OSPF neighbor relationship?

1. #show ip ospf neighbor

2. #show ip ospf

3. #debug ip ospf hello

4. #show ip protocols

The correct answer is: #show ip ospf neighbor

The command used to view the OSPF neighbor relationship is indeed "show ip ospf neighbor." This command provides vital information about OSPF peers, which is essential for troubleshooting OSPF-related issues and ensuring that OSPF routers can communicate effectively. When you execute this command, it lists all OSPF neighbors, including their states, interface information, and several metrics. It helps network administrators identify whether OSPF neighbors are properly established and functioning. For effective OSPF operations, understanding the neighbor relationships is crucial, as these relationships dictate how routers exchange routing information and can affect the overall stability and performance of OSPF in the network. Other commands serve different purposes. For example, "show ip ospf" provides general information about the OSPF process on the router, while "debug ip ospf hello" may be used to troubleshoot OSPF by monitoring hello packet exchanges but does not provide a snapshot of neighbor relationships. Lastly, "show ip protocols" gives information about the routing protocols running on the router, but it does not give detailed information on OSPF neighbor relationships specifically.