Ospfv2SessionDetails Object

Initial state of a neighbor conversation. It indicates that there has been no recent information received from the neighbor.

This state is only valid for neighbors attached to non-broadcast 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 HelloInterval.

An Hello packet has recently been seen from the neighbor. However, bidirectional communication has not yet been established with the neighbor (the router 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.

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 (BDR) is selected from the set of neighbors in the TWOWAYS state or greater.

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 database description (DD) sequence number. Neighbor conversations in this state or greater are called adjacencies.

In this state the router 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 is allowed outstanding at any one time. In this state, Link State Request Packets may 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.

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.

Neighboring routers are fully adjacent. These adjacencies will now appear in router links and network links advertisements.

Configuration information has not been sent to the card.

No OSPFv2

No recent information received from any device.

Loopback.

Emulating router is treating the network as Broadcast and it has a non-zero router priority. The emulated router will stay in this state until the end of the Designated Router election process.

Emulated router is treating the network as point-to-point. There is no Designated Router election process, so the emulated router goes to this state immediately.

Emulated router is treating the network as Broadcast. If the emulated router's priority is zero, it will immediately switch to this state when it is started (because it cannot become either DR or Backup DR). If the emulated router's priority is non-zero, it will switch to this state if other routers are elected DR and Backup DR.

Emulated router is treating the network as Broadcast, it has a non-zero router priority, and it has been elected the Backup Designated Router.

Emulated router is treating the network as Broadcast, it has a non-zero router priority, and it has been elected the Designated Router.

The emulated router state is GR.

The emulated router state is GR Helper.

No State.

The emulated router state is GR Down.

The emulated router state is GR Loopback.

The emulated router state is GR Waiting.

The emulated router state is GR Point-to-Point.

The emulated router state is GR DR Other.

The emulated router state is GR Backup.

The emulated router state is GR DR.

The emulated router state is Helper Down.

The emulated router state is Helper Loopback.

The emulated router state is Helper Waiting.

The emulated router state is Helper Point-to-Point.

The emulated router state is Helper DR Other.

The emulated router state is Helper Backup.

The emulated router state is Helper DR.

The emulated router state is GR Helper Down.

The emulated router state is GR Helper Loopback.

The emulated router state is GR Helper Waiting.

The emulated router state is GR Helper Point-to-Point.

The emulated router state is GR Helper DR Other.

The emulated router state is GR Helper backup.

The emulated router state is GR Helper DR.