Layer 2,3,IPv6+QoS Switch
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Layer 2,3,IPv6+QoS Network Switch User Manual Version 0.1 Page: 887/970
LSA Ack Interval - The number of seconds between LSA Acknowledgment packet
transmissions, which must be less than the Retransmit Interval.
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 OSPFv3 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
OSPFv3 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 OSPFv3 admin mode is enabled.
Number of Link Events - This is the number of times the specified OSPFv3 interface has
changed its state. This field is only displayed if the OSPFv3 admin mode is enabled.
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