Netgear M5300-52G3 Web Management User Guide - Page 276

Backup Designated Router: This router is itself the Backup Designated

Page 276 highlights

ProSafe M5300 Switch Field Neighbor State State Metric Description The state of the Virtual Neighbor Relationship. 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. The metric value used by the Virtual Link. Routing 276

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Field
Description
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.
Routing
276
ProSafe M5300 Switch