Convergence is the state of a set of
routers that have the same
topological information about the
internetwork in which they operate. For a set of routers to have
converged, they must have collected all available topology information from each other via the implemented
routing protocol, the information they gathered must not contradict any other router's topology information in the set, and it must reflect the real state of the network. In other words: In a converged network all routers "agree" on what the network topology looks like.