Cisco CCNA (200-301)Network FundamentalsMedium
A network engineer is troubleshooting a connectivity issue on a Cisco router. They want to view the routing table to verify learned routes and next-hop information. Which command should they use?
- Ashow cdp neighbors
- Bshow running-config
- Cshow interfaces
- Dshow ip route
Show answer & explanationAnswer & explanation
Correct answer: D. show ip route
The 'show ip route' command is used to display the IP routing table, which contains information about directly connected networks, static routes, and dynamically learned routes, including their next-hop addresses and metrics.
Why the other options are wrong
- A. 'show cdp neighbors' displays information about directly connected Cisco devices using CDP, not the routing table.
- B. 'show running-config' displays the active configuration of the device, not the current routing table.
- C. 'show interfaces' displays status and statistics for network interfaces, not the routing table.
Cisco IOS Routing Table
The routing table is a database on a router that stores information about network destinations and how to reach them, including next-hop addresses and associated metrics.
- Contains directly connected, static, and dynamic routes.
- Used by the router to make forwarding decisions.
- Accessible via 'show ip route' command.
Memory trick: To see the 'route' to success, you must 'show' the 'IP' map.