EIGRP diagnostic: Which command displays all feasible successor routes known to a router under EIGRP?

Introduction / Context:
Enhanced Interior Gateway Routing Protocol (EIGRP) maintains successor and feasible successor routes. The feasible successor acts as a backup path if the primary fails.

Given Data / Assumptions:

• Task: Identify command showing feasible successors
• Possible EIGRP monitoring commands are provided

Concept / Approach:
The EIGRP topology table stores successors and feasible successors. Successor routes appear in the routing table, but feasible successors remain in the topology table until needed.

Step-by-Step Solution:

Verification / Alternative check:
Run the command in a lab; feasible successors are displayed with FD (feasible distance) metrics.

Why Other Options Are Wrong:

• show ip routes: Does not display backup routes.
• summary: High-level data only.
• adjacencies: Only neighbor info.
• protocols: Shows routing processes, not routes.

Common Pitfalls:
Thinking feasible successors appear in the routing table—they do not until activated.

Final Answer:
show ip eigrp topology