Configuration Conditionīefore configuring the OSPF network type, ensure that: The network types of the interfaces through which OSPF neighbors are set up must be the same otherwise, normal learning of routes is affected. You can modify the network type of an OSPF interface according to the actual requirement.
Usually, the NBMA network that is not totally connected is configured as the OSPF P2MP network. Point To Multi-Point Network (P2MP): No link protocol will be regarded by OSPF as the P2MP network by default.Non-Broadcast Multi-Access Network (NBMA Network): When the link protocol is ATM, frame relay, or X.25, the default OSPF network type is NBMA.Point To Point Network (P2P Network): When the link protocol is Point to Point Protocol (PPP), Link Access Procedure Balanced (LAPB), or High-level Data Link Control (HDLC), the default OSPF network type is P2P network.Broadcast Network: When the link protocol of the network is Ethernet or Fiber Distributed Data Interface (FDDI), the default OSPF network type is broadcast network.According to the link protocol types, OSPF classifies networks into four types:
