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Hierarchy Level


On area border routers only, for a not-so-stubby area (NSSA), inject a default link-state advertisement (LSA) with a specified metric value into the area. The default route matches any destination that is not explicitly reachable from within the area.

The remaining statements are explained separately. See CLI Explorer.


default-metric metric

Metric value, ranging from 1 through 16,777,215.

metric-type type

Metric type 1 or 2. The configured metric determines the method used to compute the cost to a destination:

  • The Type 1 external metric is equivalent to the link-state metric. The path cost uses the advertised external path cost and the path cost to the AS boundary router (the route is equal to the sum of all internal costs and the external cost).

  • The Type 2 external metric uses the cost assigned by the AS boundary router (the route is equal to the external cost alone). By default, OSPF uses the Type 2 external metric.


Flood Type 7 default link-state advertisements (LSAs) if the no-summaries statement is configured. By default, when the no-summaries statement is configured, a Type 3 LSA is injected into not-so-stubby areas (NSSAs) for Junos OS Release 5.0 and later. To support backward compatibility with earlier Junos OS releases, include the type-7 statement. This statement enables NSSA ABRs to advertise a Type 7 default LSA into the NSSA if you have also included the no-summaries statement in the configuration.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

Release Information

Statement introduced before Junos OS Release 7.4.

Support for the realm statement introduced in Junos OS Release 9.2.

Support for the realm statement introduced in Junos OS Release 9.2 for EX Series switches.