Networking - What is Dual and Successor in EIGRP?

What is Dual and Successor in EIGRP.

DUAL is a convergence algorithm. Loop free operations are provided by this algorithm at every instant through a route computation. Simultaneous route synchronization with a topology change is allowed by this protocol.

Successor: A successor route is forwarded to a destination and stores in the routing table. This is done if the primary route fails. Successor route is backed up by a feasible successor route which is persisted in the topology route in case it is available. Successor route is the best route to a remote network.
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