Cisco Systems OL-4580-01 manual Field, Description, 3-41

Chapter 3 Configuring Open Shortest Path First (OSPF)

Showing OSPF Information

Table 3-11 Field Descriptions for show ospf neighbors Command (continued)

Field	Description
State/Dr	The state of a conversation being held with a neighboring
	router. The following states are listed in order of their
	progression.
	• Down - The initial state of a neighbor conversation.
	The Down state indicates that the CSS has received no
	recent information from the neighbor.
	• Init - In this state, the CSS has seen a hello packet from
	the neighbor. However, the CSS has not established
	bidirectional communication with the neighbor (the
	router itself did not appear in the neighbor’s hello
	packet). All neighbors in this state (or higher) are
	listed in the hello packets sent from the associated
	interface.
	• 2-Way - In this state, communication between the two
	routers is bidirectional. The designated router is
	selected from the set of neighbors in state 2-Way (or
	greater).
	• ExStart - This is the first step to create an adjacency
	between the two neighboring routers. The goal is to
	decide which router is the master, and to determine the
	initial Database Description (DD) sequence number.
	Neighbor conversations in this state (or greater) are
	called adjacencies.

	Cisco Content Services Switch Routing and Bridging Configuration Guide
OL-4580-01		3-41