ProCurve 8200zl Uživatelská příručka stáhnout pdf (Strana 270)

IP Routing Features

Configuring OSPF

Field

State

Rxmt QLen

Events

Description

The state of the conversation (the adjacency) between your routing switch and the neighbor.

The possible values are:

• INIT – A Hello packet has recently been seen from the neighbor. However, bidirectional

communication has not yet been established with the neighbor. (The switch itself did not

appear in the neighbor's Hello packet.) All neighbors in this state (or higher) are listed in the

Hello packets sent from the associated interface.

• 2WAY – Communication between the two routers is bidirectional. This is the most advanced

state before beginning adjacency establishment. The Designated Router and Backup

Designated Router are selected from the set of neighbors in the 2Way state or greater.

• EXSTART – 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

Database Description (DD) sequence number. Neighbor conversations in this state or

greater are called adjacencies.

• EXCHANGE – The switch is describing its entire link state database by sending Database

Description packets to the neighbor. Each Database Description packet has a DD sequence

number, and is explicitly acknowledged. Only one Database Description packet can be

outstanding at any time. In this state, Link State Request packets can also be sent asking for

the neighbor's more recent advertisements. All adjacencies in Exchange state or greater

are used by the flooding procedure. In fact, these adjacencies are fully capable of

transmitting and receiving all types of OSPF routing protocol packets.

• LOADING – Link State Request packets are sent to the neighbor asking for the more recent

advertisements that have been discovered (but not yet received) in the Exchange state.

• FULL – The neighboring routers are fully adjacent. These adjacencies will now appear in

router links and network link advertisements.

Remote transmit queue length – the number of LSAs that the routing switch has sent to this

neighbor and for which the routing switch is awaiting acknowledgements.

The number of times the neighbor’s state has changed.

5-102

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