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LSA Ack Interval - The number of seconds between LSA Acknowledgment packet transmissions,
which must be less than the Retransmit Interval.
OSPF Interface Type - The OSPF interface type, which will always be broadcast.
State - The current state of the selected router interface. One of:
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.
Loopback - In this state, the router's interface to the network is looped back either in hardware or
software. The interface is unavailable for regular data traffic. However, it may still be desirable to
gain information on the quality of this interface, either through sending ICMP pings to the interface
or through something like a bit error test. For this reason, IP packets may still be addressed to an
interface in Loopback state. To facilitate this, such interfaces are advertised in router- LSAs as
single host routes, whose destination is the IP interface address.
Waiting - The router is trying to determine the identity of the (Backup) Designated Router for the
network 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.
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 State is only displayed if the OSPF admin mode is enabled.
Designated Router - The identity of the Designated Router for this network, in the view of the
advertising router. The Designated Router is identified here by its router ID. The value 0.0.0.0 means
that there is no Designated Router. This field is only displayed if the OSPF admin mode is enabled.
Backup Designated Router - The identity of the Backup Designated Router for this network, in the
view of the advertising router. The Backup Designated Router is identified here by its router ID. Set to
0.0.0.0 if there is no Backup Designated Router. This field is only displayed if the OSPF admin mode is
enabled.
Number of Link Events - This is the number of times the specified OSPF interface has changed its
state. This field is only displayed if the OSPF admin mode is enabled.
Command Buttons
Configure Authentication - Display a new screen where you can select the authentication method for
the virtual link.