13 – Default Information Originate 5,183 views

Posted by Mo7sin in CCNP, CCNP Routing (642 - 902) On 07/04/2012 at 10:23 PM


This document shows how Open Shortest Path First (OSPF) injects a default route into a normal area. Default routes injected into a normal area can be originated by any OSPF router. The OSPF router does not, by default, generate a default route into the OSPF domain. In order for OSPF to generate a default route, you must use the default-information originate command.

There are two ways to advertise a default route into a normal area. The first is to advertise into the OSPF domain, provided the advertising router already has a default route. The second is to advertise regardless of whether the advertising router already has a default route. The second method can be accomplished by adding the keyword always to the default-information originate command.



There are no specific requirements for this document.

Components Used

This document is not restricted to specific software and hardware versions.


For more information on document conventions, see the Cisco Technical Tips Conventions.


In this section, you are presented with the information to configure the features described in this document.

Note: To find additional information on the commands used in this document, use the Command Lookup Tool (registered customers only) .

Network Diagram

This document uses the network setup shown in this diagram.



This document uses the configurations shown here.

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