Topology dissemination 口 Neighbor discovery a Use hello protocols to discover neighbors and to elect a designated router on a shared medium. a Bringing up adjacencies in a point-to-point network n a set of protocols database description, link state request update)to synchronize the link state databases of the two routers o On a shared medium, a designated router a forms adjacency with other routers and a responsible for advertising the link states.Topology dissemination 7  Neighbor discovery  Use Hello protocols to discover neighbors and to elect a designated router on a shared medium.  Bringing up adjacencies in a point-to-point network  A set of protocols (database description, link state request/update) to synchronize the link state databases of the two routers  On a shared medium, a designated router  forms adjacency with other routers, and  responsible for advertising the link states