Configuring OSPFv3 network types

By the link layer protocol, OSPFv3 classifies networks into different types, including broadcast, NBMA, P2MP, and P2P. By default, OSPFv3 considers the network type as broadcast.

Follow these guidelines when you change the network type of an OSPFv3 interface:

• An NBMA network must be fully connected. Any two routers in the network must be directly reachable to each other through a virtual circuit. If no such direct link is available, you must change the network type through a command.

• If direct connections are not available between some routers in an NBMA network, the type of interfaces associated must be configured as P2MP, or as P2P for interfaces with only one neighbor.