9tut ccnp troubleshooting sim

9tut ccnp troubleshooting sim.OSPF zone design follows a few basic rules. To apply the rules, first clearly map the interconnect network, which contains the routers and all interfaces. Then, select zones for each router interface as follows... Connect all interfaces in the same region to the same subnet. Miasma . A region should be contiguous. Some routers may be internal to a region and have all their interfaces assigned to that single region.Some routers are ABR,because some interfaces are connected to the backbone region and some interfaces are not connected to the backbone region.. All non-backbone areas must be connected to the backbone area (area 0), that is, at least one ABR is connected to both the backbone area and the non-backbone area. Figure 8-7 shows an example. Some engineers start with a network diagram that shows all 11 routers and their links. On the left, the engineer puts the four serial links and LANs connected to branch routers B1 through B4 in area 1. Similarly, it places the links to branches B11 to B14 and their LANs in area 2. Both areas need to be connected to the backbone area, area 0, so it places the LAN interfaces of D1 and D2 and D3 in area 0 to create the backbone area.Figure 8-7 has three regions of the OSPF,with D1 and D2 as the ABR The figure also shows some important OSPF region design terms. Table 8-3 summarizes the meaning of these terms and some other related terms, but the most important to note are those from the figure. Table 8-3 OSPF Design Terminology 71... CompetitionTerm DescriptionArea Boundary Router (ABR) An OSPF router with interfaces to a backbone area and at least one other areaBackbone router A router in an area (backbone area)Internal router A router in an area (non-backbone area)Region A group of routers and links that share the same detailed LSDB information, but for efficiency, they do not share this information with routers in other regions