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Configuring Default Route Information Settings for OSPF Routing

An OSPF vRouter, by default, does not generate a default route into the OSPF domain. In order for OSPF to generate a default route, you must explicitly configure the vRouter with this information.

There are two ways to inject a default route into a normal area.

If the ASBR already has the default route in the routing table, you can advertise the existing 0.0.0.0/0 into the OSPF domain with the ospf-default-information parameter.

If the ASBR doesn't have a default route, you can add the keyword always to the ospf-default-information command. However, we recommend not to add the always keyword.

The OSPF vRouter advertises a default route into the OSPF domain, even if a route to 0.0.0.0 is configured.

When you configure the metric type, you can use the parameters described for the vrouter-* commands for configuring a route map. These parameters control default route generation for IPv4 and IPv6 default routes.

CLI (network-admin@switch) > vrouter-create

ospf-default-information none|originate|always

Specify if you want to use the default route information for OSPF:

none — no default route is generated.
originate — the default route is generated only if a default route is present in the routing table.
always — the default route is generated even if no default route is present in the routing table.

ospf-default-info-originate-metric none

Specify the metric for the default route.

ospf-default-info-originate-metric-type 1|2

Specify the metric type as 1 or 2.

CLI (network-admin@switch) > vrouter-modify

ospf-default-information none\|originate\|always	Specify if you want to use the default route information for OSPF: none — no default route is generated. originate — the default route is generated only if a default route is present in the routing table. always — the default route is generated even if no default route is present in the routing table.
ospf-default-info-originate-metric none	Specify the metric for the default route.
ospf-default-info-originate-metric-type 1\|2	Specify the metric type as 1 or 2.
ospf-default-info-originate-route-map vrouter route-map name	Specify the OSPF default information route map.

CLI (network-admin@switch) > vrouter-show

ospf-default-information none\|originate\|always	Displays the default route information for OSPF: none — no default route is generated. originate — the default route is generated only if a default route is present in the routing table. always — the default route is generated even if no default route is present in the routing table.
ospf-default-info-originate-metric none	Displays the metric for the default route.
ospf-default-info-originate-metric-type 1\|2	Displays the metric type as 1 or 2.
ospf-default-info-originate-route-map vrouter route-map name	Displays the OSPF default information route map.