4-24
Field
Description
State
Neighbor state:
z
Down: This is the initial state of a neighbor conversation.
z
Init: In this state, the router has seen a Hello packet from the
neighbor. However, the router has not established
bidirectional communication with the neighbor (the router
itself did not appear in the neighbor's hello packet).
z
Attempt: Available only in an NBMA network, Under this
state, the OSPF router has not received any information from
a neighbor for a period but can send Hello packets at a
longer interval to keep neighbor relationship.
z
2-Way: In this state, communication between the two routers
is bidirectional. The router itself appears in the neighbor's
Hello packet.
z
Exstart: The goal of this state is to decide which router is the
master, and to decide upon the initial Database Description
(DD) sequence number.
z
Exchange: In this state, the router is sending DD packets to
the neighbor, describing its entire link-state database.
z
Loading: In this state, the router sends Link State Request
packets to the neighbor, requesting more recent LSAs.
z
Full: In this state, the neighboring routers are fully adjacent.
Mode
Neighbor mode for LSDB synchronization:
z
Nbr is Master: Means the neighboring router is the master.
z
Nbr is Slave: Means the neighboring router is the slave.
Priority
Neighboring router priority
DR
The DR on the interface’s network segment
BDR
The BDR on the interface’s network segment
MTU Interface
MTU
Dead timer due in 33 sec
Dead timer times out in 33 seconds
Neighbor is up for 02:03:35
The neighbor has been up for 02:03:35.
Authentication Sequence
Authentication sequence number
Neighbor state change count
Count of neighbor state changes
# Display brief OSPF neighbor information.
<Sysname> display ospf peer
OSPF Process 1 with Router ID 1.1.1.1
