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CanogaOS Command Line Reference Revision 1.02

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default value, use the no form of this command.

Command Syntax

ip ospf network {broadcast | non-broadcast | point-to-multipoint [non-broadcast] |

point-to-point}

no ip ospf network

broadcast Sets the network type to broadcast.

non-broadcast Sets the network type to nonbroadcast multiaccess (NBMA).

point-to-multipoint [non-broadcast] Sets the network type to point-to-multipoint. The

optional non-broadcast keyword sets the

point-to-multipoint network to be nonbroadcast. If you

use the non-broadcast keyword, the neighbor

command is required.

point-to-point Sets the network type to point-to-point.

Default

Depends on the network type.

Command Mode

Interface configuration

Usage

Using this feature, you can configure broadcast networks as NBMA networks when, for example,

routers in your network do not support multicast addressing. You can also configure nonbroadcast

multi-access networks as broadcast networks. This feature saves you from needing to configure

neighbors.

Configuring NBMA networks as either broadcast or nonbroadcast assumes that there are virtual

circuits from every router to every router or fully meshed networks. However, there are other

configurations where this assumption is not true. For example, a partially meshed network. In these

cases, you can configure the OSPF network type as a point-to-multipoint network. Routing between

two routers that are not directly connected will go through the router that has virtual circuits to both

routers. You need not configure neighbors when using this feature.

If this command is issued on an interface that does not allow it, this command will be ignored.

OSPF has two features related to point-to-multipoint networks. One feature applies to broadcast

networks; the other feature applies to nonbroadcast networks:

 On point-to-multipoint, broadcast networks, you can use the neighbor command, and you must

specify a cost to that neighbor.

 On point-to-multipoint, nonbroadcast networks, you must use the neighbor command to identify

neighbors. Assigning a cost to a neighbor is optional.

Examples

The following example sets your OSPF network as a non-broadcast network:

interface eth-0-1

no switchport

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