Broadcast to nonbroadcast: In this network type, the routers send multicast traffic to all other routers on the network. This network type is not compatible with nonbroadcast networks because nonbroadcast networks do not support multicast traffic.ī. The hub sends multicast traffic to all spokes, but the spokes only send unicast traffic to the hub. Point-to-multipoint to nonbroadcast: In this network type, one router is designated as the hub, and the other routers are spokes. Let's understand each of the given options and why option (D) is the correct answer:Ī. The answer is (D) broadcast to point-to-point. The given question asks about the OSPF network types that are compatible and allow communication through two peering devices. The compatibility of OSPF network types is important because it affects how OSPF routers can form adjacencies and exchange routing information. OSPF has several network types, which define how OSPF routers communicate with each other. It uses cost as a metric to determine the shortest path to a destination network. OSPF (Open Shortest Path First) is a link-state routing protocol that is widely used in enterprise networks. They are multiaccess networks because there may be numerous hosts, printers, routers, and other devices that are all members of the same network.Click on the arrows to vote for the correct answer A. In broadcast networks, all devices on the network see all broadcast and multicast frames. Ethernet LANs are the most common example of broadcast multiaccess networks. (Figure 5)Ī multiaccess network is a network with multiple devices on the same shared media, which are sharing communications. Virtual links - Special OSPF network used to interconnect distant OSPF areas to the backbone area.Often used to connect branch sites (spokes) to a central site (hub). Point-to-multipoint - Multiple routers interconnected in a hub-and-spoke topology over an NBMA network.Nonbroadcast multiaccess (NBMA) - Multiple routers interconnected in a network that does not allow broadcasts, such as Frame Relay.Broadcast multiaccess - Multiple routers interconnected over an Ethernet network.This is often the configuration in WAN links.
Point-to-point - Two routers interconnected over a common link.OSPF defines five network types, as shown in Figures 1 to 5: To configure OSPF adjustments, start with a basic implementation of the OSPF routing protocol.
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