![]() On an NBMA network, OSPF packets are unicast, and neighbors are manually configured. NBMA networks require DR and BDR election. P2MP networks are not required to be fully meshed. The following are the differences between NBMA and P2MP networks: P2P-On a P2P network, OSPF packets are multicast to 224.0.0.5. On a P2MP network, OSPF packets are multicast to 224.0.0.5. P2MP must be a conversion from other network types such as NBMA. NBMA-OSPF packets are unicast on an NBMA network. On a broadcast network, hello, LSU, and LSAck packets are multicast to 224.0.0.5 that identifies all OSPF routers or to 224.0.0.6 that identifies the DR and BDR. ![]() OSPF classifies networks into the following types, depending on different link layer protocols:īroadcast-By default, OSPF considers the network type as broadcast.
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