Question

A network engineer notices that a route in the EIGRP topology table shows no feasible successor after the primary path failed. The router sends queries to its neighbors and waits for replies before installing a new path. Which statement best explains why this behavior occurs and its consequence?

Accepted Answer

No neighbor met the feasibility condition, so DUAL places the route into the active state and queries neighbors, risking a stuck-in-active (SIA) condition if replies are delayed.

Answer

The router lost its adjacency, so it must rebuild the neighbor table using hello packets before any route can be reused.

Answer

The successor's reported distance was lower than the feasible distance, which caused DUAL to immediately promote the backup path without querying.

Answer

EIGRP summarization at the boundary removed the backup route, forcing the router to rely on a floating static route instead.