Boson Practice Exam

Unequal-cost load balancing in EIGRP relies on finding feasible successors—backup routes whose metric is within reach of the current best path. A feasible distance (FD) is the metric of the best path, and a feasible successor is any alternative path with a metric less than that FD. The variance command sets a multiplier that expands which alternative paths EIGRP considers for load balancing. By increasing variance above 1, EIGRP accepts and can use multiple paths with metrics up to FD multiplied by the variance, enabling unequal-cost paths to share traffic. So this command is the one that governs whether feasible successors can be used for UCMP. The other options don’t control this behavior: bandwidth is an interface parameter for metric calculation, redistribute moves routes between protocols, and feasible isn’t a standalone command used this way.