Editing Open Shortest Path First (section)

====Neighbor state changes====
[[File:OSPF-Adjacency-process.drawio.png|thumb|Neighbor state changes (Hello Protocol)]]
#Down: The state ''down'' represents the initial state of a conversation when no information has been exchanged and retained between routers with the Hello Protocol.
#Attempt: The ''attempt'' state is similar to the ''down'' state, except that a router is in the process of efforts to establish a conversation with another router, but is only used on [[non-broadcast multiple-access network]]s (NBMAs).
#Init: The ''init'' state indicates that a hello packet has been received from a neighbor, but the router has not established a two-way conversation.
#Two-way: The ''two-way'' state indicates the establishment of a bidirectional conversation between two routers. This state immediately precedes the establishment of adjacency. This is the lowest state of a router that may be considered as a DR.