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DES-7200 CLI Reference Guide Chapter 32 OSPFv2 Configuration Commands
32-31
Parameter
description
Parameter Description
broadcast
Set the OSPF network type as the broadcast
type.
non-broadcast
Set the OSPF network type as the
non-broadcast multi-path access type, i.e.
NBMA network.
point-to-multipoint
[ non-broadcast ]
Set the OSPF network type as the
point-to-multipoint type.
By default it is the point-to-multipoint broadcast
type. The option non-broadcast means
point-to-multipoint non-broadcast type.
point-to-point
Set the OSPF network type as the
point-to-point type.
Default

PTP network type: PPP, SLIP, frame relay PTP sub-interface,
X.25 PTP sub-interface encapsulation

NBMA network type: frame relay (except for PTP sub-interface),
X.25 encapsulation (except for PTP sub-interface)

Broadcast network type: Ethernet encapsulation

By default, the network type is the point-to-multipoint network
type.
Command
mode Interface configuration mode.
Usage
guidelines
Networks are divided into three types according to the transmission
feature of media:

Broadcast network (Ethernet, token ring and FDDI)

Non-broadcast network (frame relay and X.25)

PTP network (HDLC, PPP and SLIP)
The non-broadcast network is further divided into two sub-types by
the OSPF operation mode:

Non-broadcast multi-path access (NBMA) type. NBMA requires
all interconnected devices can directly communicate to each
other, and only full mesh type connection can meet this
requirement. There is no problem in case of the SVC (such as
X.25) connections, but it is difficult in case of networking with
PVC (such as frame relay). The OSPF on the NBMA network
operates similarly to that on the broadcast network, where the