Question

A network engineer is evaluating whether to deploy EIGRP or OSPF in an enterprise campus. A key requirement is the fastest possible reconvergence after a primary path failure WITHOUT any recomputation delay, provided a precomputed loop-free backup path already exists in the topology. Which statement correctly compares how each protocol meets this requirement?

Accepted Answer

EIGRP can install a feasible successor immediately from its topology table, avoiding recomputation, whereas OSPF must run the SPF algorithm to recalculate the shortest-path tree.

Answer

OSPF installs a precomputed backup automatically from its link-state database, while EIGRP must rerun the DUAL algorithm for every failure.

Answer

Both protocols use precomputed backup paths identically, so convergence behavior is the same regardless of which is chosen.

Answer

EIGRP must flood a full topology update and rerun DUAL on all routers before installing any backup, making OSPF's SPF faster in this case.