9tut ccna v7

9tut ccna v7.D and E) are 2-way states (known as neighbors).This different behavior of OSPF neighbors on a LAN (some neighbors reach fiill status, some do not) leads to the use of two other OSPF terms: adjacency and full adjacency. Fully-adjacent neighbors reach fiill status after directly exchanging their LSDBs. Adjacent neighbors are those DROther routers that (correctly) choose to stay in the 2-way state, but never reach the fiill state.166 Chapter 8 Implementing IPv4 OSPFTable 8-2 summarizes these key concepts and terms related to the OSPF state. /-... Table 8-2 Stable OSPF Neighbor States and Their MeaningsNeighbor State Neighbor Term Meaning2-way neighbor A neighbor sends a Hello, which lists the local router's RID in the list of seen routers, and also indicates that the neighbor verification checks have all passed. If both neighbors are DROther routers, the neighbor should stay in this statefull Full adjacency Both routers know the exact same LSDB details and are fully adjacently connected, which means they have completed the exchange of LSDB contentsUsing Zone Extension OSPFUsing OSPF in some networks can be less of a design concern. Simply turn on OSPF on all routers, put all interfaces in the same area (usually area 0), and it works! Figure 8-6 shows an example of such a network, with II routers and all interfaces in area 0.Area 0 (backbone)