Cisco ENCOR Practice Exam 2026 – All-in-One Comprehensive Guide to Mastering Enterprise Network Core Technologies!

The primary function of an EIGRP successor route is to be the best EIGRP route added to the Routing Table. In EIGRP (Enhanced Interior Gateway Routing Protocol), the successor is the route that has the lowest metric to a destination and is used for packet forwarding. When a router builds its routing table, it evaluates multiple routes to the same destination and selects the one with the most optimal path based on metrics like bandwidth, delay, load, and reliability.

This route is actively used for forwarding traffic. If the successor route becomes unavailable, EIGRP can promptly use a feasible successor as a backup, ensuring minimal downtime and maintaining network efficiency. The distinction between successor and feasible successor routes is crucial, as it demonstrates EIGRP's ability to provide rapid convergence through its unique distance vector routing method.

Other choices, while they may hold elements of truth in different contexts, do not encapsulate the primary function of a successor route within EIGRP's operational framework. For instance, a backup route is related to feasible successors but not directly to successor routes, and establishing adjacencies is part of the initial setup and communication process of EIGRP rather than the function of a specific routing decision. Handling inbound traffic pertains more to traffic management and