Netgear GSM7224v2 - 24-Port Layer 2 Managed Gigabit Switch ユーザーズマニュアル

Neighbor State

The state of the Virtual Neighbor Relationship.

State

The state of the interface:

Down: This is the initial interface state. In this 

state, the lower-level protocols have indicated that 
the interface is unusable. In this state, interface 
parameters will be set to their initial values. All 
interface timers will be disabled, and there will be 
no adjacencies associated with the interface.

Waiting: The router is trying to determine the 

identity of the (Backup) Designated Router by 
monitoring received Hello Packets. The router is 
not allowed to elect a Backup Designated Router 
or a Designated Router until it transitions out of 
Waiting state. This prevents unnecessary changes 
of (Backup) Designated Router.

Point-to-Point: The interface is operational, and is 

connected either to the virtual link. On entering this 
state the router attempts to form an adjacency with 
the neighboring router. Hello Packets are sent to 
the neighbor every HelloInterval seconds.

Designated Router: This router is itself the 

Designated Router on the attached network. 
Adjacencies are established to all other routers 
attached to the network. The router must also 
originate a network-LSA for the network node. The 
network- LSA will contain links to all routers 
(including the Designated Router itself) attached to 
the network.

Backup Designated Router: This router is itself 

the Backup Designated Router on the attached 
network. It will be promoted to Designated Router if 
the present Designated Router fails. The router 
establishes adjacencies to all other routers 
attached to the network. The Backup Designated 
Router performs slightly different functions during 
the Flooding Procedure, as compared to the 
Designated Router.

Other Designated Router: The interface is 

connected to a broadcast or NBMA network on 
which other routers have been selected to be the 
Designated Router and Backup Designated Router 
either. The router attempts to form adjacencies to 
both the Designated Router and the Backup 
Designated Router.

Metric

The metric value used by the Virtual Link.