Cisco Certified Network Professional 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 655

Which command helps to visualize the status of the FIB entries?

show ip route

display fib status

show ip cef

The command "show ip cef" is utilized to visualize the status of the Forwarding Information Base (FIB) entries in a Cisco device. CEF is a high-performance switching technology used in Cisco routers and switches that allows for efficient packet forwarding. This command provides detailed information about the FIB, including entries associated with each route, which are crucial for rapid packet forwarding without necessitating a lookup against the routing table for each packet forwarded.

By using "show ip cef," a network engineer can view how the FIB is populated and whether any issues exist. It details the paths that packets will take based on the current routing decisions made by the router, reflecting both static and dynamic routing changes. This understanding is critical for diagnosing network performance issues or for optimization purposes.

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