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Main Menu Web-Based Management Interface
Lan Switch and Router Blade
176
Slot/port
- Selects the interface for which data is to be displayed or configured. Slot 0 is
the base unit.
Neighbor IP Address
- Selects the IP Address of the neighbor for which data is to be
displayed.
Non-Configurable Data
Router ID
- A 32 bit integer in dotted decimal format that identifies the neighbor router.
Options
- The optional OSPF capabilities supported by the neighbor. The neighbor's
optional OSPF capabilities are also listed in its Hello packets. This enables received Hello
Packets to be rejected (i.e., neighbor relationships will not even start to form) if there is a
mismatch in certain crucial OSPF capabilities.
Router Priority
- Displays the OSPF priority for the specified neighbor. The priority of a
neighbor is a priority integer from 0 to 255. A value of '0' indicates that the router is not
eligible to become the designated router on this network.
State
- The state of a neighbor can be the following:
Down
- This is the initial state of a neighbor conversation. It indicates that there has
been no recent information received from the neighbor. On NBMA networks, Hello
packets may still be sent to "Down" neighbors, although at a reduced frequency.
Attempt
- This state is only valid for neighbors attached to NBMA networks. It
indicates that no recent information has been received from the neighbor, but that a
more concerted effort should be made to contact the neighbor. This is done by
sending the neighbor Hello packets at intervals of Hello Interval.
Init
- In this state, a Hello packet has recently been seen from the neighbor. However,
bidirectional communication has not yet been established with the neighbor (i.e., the
router itself did not appear in the neighbor's Hello packet). All neighbors in this state
(or greater) are listed in the Hello packets sent from the associated interface.
2-Way
- In this state, communication between the two routers is bidirectional. This
has been assured by the operation of the Hello Protocol. This is the most advanced
state short of beginning adjacency establishment. The (Backup) Designated Router is
selected from the set of neighbors in state 2-Way or greater.
Exchange Start
- This is the first step in creating an adjacency between the two
neighboring routers. The goal of this step is to decide which router is the master, and
to decide upon the initial DD sequence number. Neighbor conversations in this state
or greater are called adjacencies.
Exchange
- In this state the router is describing its entire link state database by
sending Database Description packets to the neighbor. In this state, Link State
Request Packets may also be sent asking for the neighbor's more recent LSAs. All
adjacencies in Exchange state or greater are used by the flooding procedure. These
adjacencies are fully capable of transmitting and receiving all types of OSPF routing
protocol packets.
Loading
- In this state, Link State Request packets are sent to the neighbor asking for
the more recent LSAs that have been discovered (but not yet received) in the
Exchange state.
Full
- In this state, the neighboring routers are fully adjacent. These adjacencies will
now appear in router-LSAs and network-LSAs.
Events
- The number of times this neighbor relationship has changed state, or an error
has occurred.
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