OSPF-10

Question 1

What does the show ip ospf command display?

Answer 1

A: It displays the router ID, number of areas, SPF statistics, and LSA timers.

Explanation: Useful for verifying OSPF configuration and operation.

Question 2

What does show ip ospf database reveal?

Answer 2

A: It shows the number of OSPF routers in the AS and their Router IDs.

Explanation: You can view all participating routers and identify them by their highest IP address (Router ID).

Question 3

What key information does show ip ospf interface brief provide?

Answer 3

A: It provides OSPF info per interface such as:

Interface IP address
Area assignment
Process ID
Cost
DR/BDR status

Explanation: This command gives a quick overview of all OSPF-enabled interfaces and their operational state.

Question 4

What does the show ip ospf neighbor command display?

Answer 4

A: It summarizes key information about OSPF neighbors and their adjacency states.

Explanation: This includes each neighbor’s Router ID, state (Full, 2-Way, etc.), priority, and the interface over which the neighbor was learned—critical for troubleshooting adjacency issues.

Question 5

What key OSPF details can you learn from the show ip protocols command?

Answer 5

A:

OSPF Process ID
OSPF Router ID
Area type
Networks and their corresponding areas
OSPF neighbor Router IDs

Explanation:
show ip protocols provides a summary view of dynamic routing protocols like OSPF, making it useful for validating protocol settings, neighbor IDs, and area designations during configuration or troubleshooting.