How do you distribute a default route in OSPF?

How do you distribute a default route in OSPF?

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 0.0. 0.0 into the OSPF domain, provided the advertising router already has a default route.

How do you redistribute a default route?

If the default route is not available on the routing table , you can directly add the default route(0.0. 0.0/0) in the redistribution profile of the protocols in the BGP-Network–BGP—Redistribution profile, Network–OSPF–Exportrule and enable the Allow redistribute default route tab and distribute the route.

Which command is used to redistribute a static default route into OSPF?

redistribute static subnets
Under OSPF process “redistribute static subnets “command is used to redistribute static routes in OSPF, However static default route (ip route 0.0. 0.0 0.0.

What is the use of default route in OSPF?

Default Routes For example, of you configure a totally stubby area, of course a default route is required and OSPF generates this route automatically from the ABR. In order to increase flexibility with your designs, default routes injected into a normal area can be originated by any OSPF router.

Where should we use default routing?

Explanation: We must use default routing on stub networks. They have only one exit path out of the network, so there can be no specific path decided for such networks.

What is default information originate OSPF?

In OSPF, the “default-information originate” command will not advertise to any other routers without a default route in the routing table. When added the “always” keyword , it tells the router to advertise a default route to other routers even if you don’t have a default route in the routing table.

How do I redistribute a static route in OSPF?

Enter the router ospf command to enter OSPFv2 router configuration mode and enable OSPFv2 on the device. Enter the redistribute command with the static parameter to redistribute static routes. Enter the redistribute command with the rip parameter to redistribute RIP routes.

How to generate a default route in OSPF?

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.

How does allow redistribute default route work on BGP and OSPF?

Enabling the ” Allow Redistribute Default Route ” with the redistribution profile having the default route is mandatory to have the default route advertised to its peers. The procedure is same for OSPF and BGP.

Why do I need the allow redistribute default route tab?

The significance of having the Allow Redistribute default route tab is to validate whether the default route needs to be propogated even if it is part of the redistribution profile, which has all the routes including default. To check if the default route is propogated , check the following CLI commands

How to inject a default route into a normal area?

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 0.0.0.0 into the OSPF domain, provided the advertising router already has a default route.