OSPF - Stub network overload

Route leaking is supported in OSPF when the router is overloaded, which allows redistribution of the external prefixes. The external prefixes are not redistributed when OSPF is overloaded. You can now configure the following when OSPF is overloaded. 

• allow-route-leaking at the [edit protocols overload] hierarchy level to advertise the external prefixes with maximum cost. 
• stub-network at the [edit protocols ospf overload] hierarchy level to advertise stub network with maximum metric. 
• intra-area-prefix at the [edit protocols ospf3 overload] hierarchy level to advertise intra-area prefix with maximum metric. 
• as-external at the [edit protocols overload] hierarchy level to advertise external prefix with maximum metric.