CISCO IOS in a Nutshell

Name

ip ospf network — interface

Synopsis

ip ospf network {broadcast | non-broadcast | point-to-multipoint}
no ip ospf network

Configures

The type of OSPF network

Default

Depends on the interface type

Description

Given the interface’s type, the OSPF process selects a default network type. This command allows the default network type to be changed.

broadcast

The interface is connected to a broadcast network.

non-broadcast

The interface is connected to a nonbroadcast network, i.e., a network with no effective way of dealing with broadcast packets. One example is a point-to-point network.

point-to-multipoint

The interface is connected to a point-to-multipoint network.

Example

By default, a serial interface is point-to-point. The following commands configure a serial subinterface as part of a broadcast network:

interface serial0.1
   ip ospf network broadcast