UANTA COMPUTER INC.
Layer 2/3/4 Managed Switch
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LB9
User’s Guide 1355/1523
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.
Local Link LSAs
- The number of opaque LSAs whose flooding scope is the link on this interface.
Link Local LSA Checksums
- The sum of the checksums of local link LSAs for this link.
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
- Display a new screen where you can select the authentication method for the virtual
link.
Submit
- Send the updated configuration to the switch. Configuration changes take effect
immediately. These changes will not be retained across a power cycle unless a save is performed.
