How does EIGRP's Diffusing Update Algorithm (DUAL) work, and what is its role in route computation and convergence?

Question

Accepted Answer

EIGRP's DUAL algorithm is a loop-free routing algorithm used for route computation and convergence in EIGRP networks.

DUAL algorithm ensures loop-free paths by maintaining a topology table with feasible successors and successors for each destination.
When a link or route fails, DUAL algorithm calculates a new loop-free path to the destination using feasible successors.
DUAL algorithm minimizes convergence time by quickly recalculating routes based on the new network topology.
EIGRP routers exchange routing information and use DUAL algorithm to compute best paths to destinations.
DUAL algorithm plays a crucial role in EIGRP's fast convergence and efficient route computation.

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