Enhanced IGRP (EIGRP) convergence differs slightly. If a router detects a link failure between itself and a
neighbor, it checks the network topology table for a feasible alternate route. If it does not find a qualifying
alternate route, it enters in an active convergence state and sends a Query out all interfaces for other routes
to the failed link. If a neighbor replies to the Query with a route to the failed link, the router accepts the new
path and metric information, places it in the topology table, and creates an entry for the routing table. It then
sends an update about the new route out all interfaces. All neighbors acknowledge the update and send
updates of their own back to the sender. These bi-directional updates ensure the routing tables are
synchronized and validate the neighbor's awareness of the new topology. Convergence time in this event is
the total of detection time, plus Query and Reply times and Update times.