Command Reference Guide

122 ● display ospf peer 3Com Router 5000 Family and Router 6000 Family
Command Reference
Display brief information about OSPF neighbors.
<3Com > display ospf peer brief
OSPF Process 1 with Router ID 1.1.1.1
Neighbor Statistics
Area ID Down Attempt Init 2-Way ExStart Exchange Loading Full
Total
0.0.0.0 0 0 0 0 0 0 0 1 1
0.0.0.1 0 0 0 0 0 0 0 1 1
Total 0 0 0 0 0 0 0 2 2
View This command can be used in the following views:
■ Any view
Table 24 Description on the fields of the display ospf peer command
Field Description
RouterID Router ID of the neighbor router
Address Address of the interface, through which the neighbor router
communicates with the router
State State of adjacency
Mode Master/slave mode formed through negotiation duing DD packet
exchange
Priority Priority of the neighbor in DR/BDR election
DR IP address of the interface of elected DR
BDR IP address of the interface of elected BDR
Dead timer expires in 31s Remaining time before the neighbor is considered dead
Neighbor has been up for
01:14:14
Duration of the neighbor connection
Table 25 Description on the fields of the display ospf peer brief command
Field Description
Area ID Area ID
Down Initial state of a neighbor conversation. It
indicates that there has been no recent information received from the neighbor.
Attempt This state is only valid for neighbors attached to NBMA networks, such as Frame
Relay, X.25 and ATM.
It indicates that the OSPF router does not receive information from the neighbor
router recently, but that an effort should be made to maintain the contact with
the neighbor by sending Hello packets in a low frequency.
Init It indicates that the OSPF router has received a Hello packet from the neighbor
router, but does not see the IP address of itself in the Hello packet. Therefore, a
two-way communication has not been established between the two routers yet.
2-Way It indicates that a two-way communication between the OSPF router and its
neighbor has been established.
The DR and BDR are selected from the set of neighbors in 2-Way state or greater.
ExStart In this state, the router needs to decide upon the initial DD sequence number,
ensuring that the link state information it obtains is always up to date.
Exchange In this state, the OSPF router exchanges link state information with its neighbor by
sending DD packets.
Loading In this state, the OSPF router sends link state requests to the neighbor asking for
the more recent LSAs that have been discovered (but not yet received) in the
Exchange state.
Full It indicates that the neighboring routers have synchronized their LSDBs.