If an EIGRP route doesn't meet the feasibility requirement, what is its status regarding unequal-cost load balancing?

When dealing with EIGRP (Enhanced Interior Gateway Routing Protocol), one of the key concepts to understand is the feasibility condition. This is a criterion that helps determine whether a route is a viable candidate for inclusion in the routing table, particularly when considering unequal-cost load balancing.

If a route does not meet the feasibility condition, this means it has a lower feasibility interface (FD) compared to the successor route, which is the primary best route. As a result, this non-feasible route cannot be used for load balancing, including scenarios involving unequal-cost load balancing. EIGRP relies heavily on the feasibility condition to ensure that loops are avoided and that the routes considered for load balancing are stable and viable alternatives.

In summary, if a route does not meet the feasibility requirement, it is effectively barred from participating in load balancing strategies, thereby confirming its status as not available for that purpose. This concept is crucial for network stability and efficiency when managing multiple paths to a destination.