HP 3500YL - Manual (Page 286)

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.
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