Converging by Going Active

ImageLesson 1: EIGRP Queries and the Stuck in Active State

When EIGRP removes a successor route and no FS route exists, the router begins a process by which the router discovers whether any loop-free alternative routes exist to reach that prefix. This process is called going active on a route. Routes for which the router has a successor route, and no failure has yet occurred, remain in a passive state. Routes for which the successor route fails, and no feasible successor routes exist, move to an active state, as follows:

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