Which two conditions must be met for EIGRP to maintain an alternate loop-free path to a remote network? (Choose two)

The feasibility condition in EIGRP requires that a neighbor's Reported Distance (RD) be strictly less than the local Feasible Distance (FD). This mathematical guarantee ensures the neighbor cannot be part of a routing loop, qualifying it as a feasible successor. Without this condition, EIGRP would need to run a full DUAL recomputation to find a safe alternate path.

A Reported Distance higher than the local Feasible Distance violates the feasibility condition, meaning the path could form a routing loop and cannot qualify as a feasible successor.

A feasible successor must exist in the topology table for EIGRP to provide an immediate alternate loop-free path upon successor failure. If no feasible successor is present, EIGRP enters Active state and sends queries to neighbors, delaying convergence significantly. The presence of a feasible successor is what enables sub-second failover.

This reverses the feasibility condition - EIGRP compares the neighbor's Reported Distance against the local Feasible Distance, not FD of a successor against local RD, which is not a valid EIGRP evaluation.

The feasibility condition is the core DUAL mechanism that guarantees loop-free alternate paths without SPF recomputation; bypassing it would eliminate the loop-free guarantee entirely.