
Configuring IP Services
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Specifying the Network Type
OSPF interfaces support communications over four network types:
• A broadcast network supports multiple routers and can address a single
physical message to all attached routers. Examples of such a network are
Ethernet, FDDI, and token ring.
• A nonbroadcast multiaccess (NBMA) network supports multiple routers and
cannot address a single physical message to all routers. Examples of such a
network are frame relay and X.25.
• A point-to-point network joins a single pair of OSPF routers. An example of
such a network would be a network of synchronous lines.
• A point-to-multipoint network supports multiple routers in a partial mesh
configuration. Bay Networks supports the standard OSPF point-to-multipoint
interface and also provides a proprietary point-to-multipoint solution for
routers running OSPF in star frame relay topologies.)
By default, OSPF assumes that the interface is attached to a broadcast
network.You can use the BCC or Site Manager to specify another network type.
Note: If the interface is connected to an NBMA network, you need to
configure neighbors manually.
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