Which statement accurately defines EIGRP's concept of a feasible successor?

The concept of a feasible successor in EIGRP (Enhanced Interior Gateway Routing Protocol) is crucial for understanding how EIGRP maintains loop-free and efficient routing tables. A feasible successor is defined as a backup route to the primary route (successor) that meets the feasibility condition, which ensures that the route is loop-free.

For a route to be considered a feasible successor, its reported distance must be less than the feasible distance of the current successor route. This means that it is a candidate for a backup path, and EIGRP can use it for route selection without causing loops. The feasible condition checks for alternative paths that can be used in case the primary path fails, ensuring optimal performance and reliability in the network.

Understanding the feasible successor is essential for network engineers implementing EIGRP, as it aids in quick failover and preserves network stability. The other statements do not accurately reflect the criteria for a feasible successor, reinforcing the importance of meeting the feasibility condition as the defining characteristic of such routes.