An election office asks when EIGRP can fail over to a backup path without entering active query state. Which condition describes that loop-free backup?
Select an answer to reveal the explanation.
Short Explanation
If a neighbor’s reported distance is still less than what you already trust as feasible distance, that neighbor is a pre-vetted spare—no county-wide query needed. That’s the feasible successor. Without it, EIGRP goes Active and starts asking around.
Full Explanation
A feasible successor is a loop-free backup that satisfies the feasibility condition: its reported distance is strictly less than the successor’s feasible distance. When the successor fails, EIGRP can immediately use that FS without entering Active/query. Hop count alone or OSPF external presence does not define FS status, and queries are not mandatory when an FS already exists.