| State |
| The communication state for two adjacent routers: |
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| Down: | This is the initial state of a neighbor conversation. It |
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| indicates that there has been no recent information received |
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| from the neighbor. |
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| Attempt: | This state is only valid for neighbors attached to |
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| information has been received from the neighbor, but that |
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| the router is attempting to contact the neighbor by sending |
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| Hello packets. |
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| Init: | A Hello packet has recently been seen from the neighbor. |
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| However, bidirectional communication has not yet been |
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| established with the neighbor. |
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| Communication between the two routers has been |
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| established. This is the most advanced state short of |
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| beginning adjacency establishment. Note that both the |
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| Designated Router and Backup Designated Router are |
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| selected from the set of neighbors in state |
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| ExStart: | This is the first step in creating an adjacency between the |
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| two neighboring routers. The goal of this step is to decide |
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| which router is the master, and to decide upon the initial |
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| sequence number. Neighbor conversations in this state or |
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| greater are called adjacencies. |
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| Exchange: | The router is describing its entire link state database by |
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| sending database description packets to the neighbor. |
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| (Each database description packet has a sequence number, |
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| and is explicitly acknowledged.) All adjacencies in |
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| Exchange state or greater are used by the flooding |
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| procedure. In fact, these adjacencies are fully capable of |
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| transmitting and receiving all types of OSPF routing |
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| protocol packets. |
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| Loading: | Link State Request packets are sent to the neighbor asking |
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| for more recent advertisements that have been discovered |
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| (but not yet received) in the exchange state. |
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| Full: | The neighboring routers are fully adjacent. These |
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| adjacencies will now appear in router links and network |
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| links advertisements. |
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| Events |
| The number of events encountered that cause a neighbor state change |
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| since boot up. |
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| Note: | To scroll through the table, use the <Next Page> and <Prev Page> buttons. To |
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| display a specific page, set the page number in the Page field and select |
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| <Apply>. |
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2.7.Resetting the System
Use the Restart command under the Main Menu to reset the management agent. The reset screen is shown below.
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