show ip ospf neighbor

show ip ospf neighbor

Shows information about all neighbors.

Syntax: show ip ospf neighbor

Description: Show information about all neighbors.

Factory Default: None.

Command Mode: Executive and privileged.

Example: The following is sample output from the show ip ospf neighbor command:

router#show ip ospf neighbor

Area 0.0.0.0

Neighbor ID Pri State Dead Time Address Interface

50.50.50.50 1 Full/ - 32 201.1.1.50 POS 1/1/1

20.20.20.20 1 Full/ - 35 208.1.1.20 POS 1/1/3

30.30.30.30 1 Full/ - 40 202.1.1.30 CL CL-A

The following table describes the fields in the display:

Table 2-7. Fields Displayed by show ip ospf neighbor
Field Description

Area

The area number as defined with the network area command.

Neighbor ID

The IP address of a neighbor.

Pri

The priority assigned to that neighbor with the ip ospf priority command.

State

The state of the router adjacency:

Init - at least one hello packet has been received from the neighbor but the adjacency is not yet two-way

2Way - it is now known that the neighbor has heard from us and has included our router identifier in its hello. In some cases adjacencies will never progress beyond this state

Exch Start - the two routers are going to synchronize. They are in the process of determining which router will be the Master and which the Slave

Exchange - the two routers are describing the set of advertisements in their respective databases to each other

Loading - the two routers now know what advertisements the other has that they want and are in the process of getting them

Full - both routers have completed exchanging all their relevant advertisements

Dead Time

The number of seconds to wait for an advertisement before declaring this neighbor down. This value is defined with the ip ospf dead-interval command.

Address

IP address of the neighbor.

Interface

The name of the interface. This value is defined with the interface command.

Related Commands: ip ospf dead-interval
ip ospf hello-interval
ip ospf priority
ip ospf retransmit-interval
ip ospf transmit-delay
network area
show interfaces pos
show ip ospf
show ip ospf border-routers
show ip ospf database
show ip ospf neighbor
show ip ospf request-list
show ip ospf retransmission-list
show ospf virtual-links

router#show ip ospf neighbor Area 0.0.0.0 Neighbor ID Pri State Dead Time Address Interface 50.50.50.50 1 Full/ - 32 201.1.1.50 POS 1/1/1 20.20.20.20 1 Full/ - 35 208.1.1.20 POS 1/1/3 30.30.30.30 1 Full/ - 40 202.1.1.30 CL CL-A

**Table 2-7.** Fields Displayed by show ip ospf neighbor
Field	Description
Area	The area number as defined with the network area command.
Neighbor ID	The IP address of a neighbor.
Pri	The priority assigned to that neighbor with the ip ospf priority command.
State	The state of the router adjacency: Init - at least one hello packet has been received from the neighbor but the adjacency is not yet two-way 2Way - it is now known that the neighbor has heard from us and has included our router identifier in its hello. In some cases adjacencies will never progress beyond this state Exch Start - the two routers are going to synchronize. They are in the process of determining which router will be the Master and which the Slave Exchange - the two routers are describing the set of advertisements in their respective databases to each other Loading - the two routers now know what advertisements the other has that they want and are in the process of getting them Full - both routers have completed exchanging all their relevant advertisements
Dead Time	The number of seconds to wait for an advertisement before declaring this neighbor down. This value is defined with the ip ospf dead-interval command.
Address	IP address of the neighbor.
Interface	The name of the interface. This value is defined with the interface command.

   Source File Name: ospf.fm
    HTML File Name: ospf27.html
    Last Updated: 05/10/04 at 16:34:58

show ip ospf neighbor

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