OSPF stubby area

• No external routes but O & IA
• Summary LSA: Type 3 [no type 4 generated by ASBR]
• Default route as summary route: Type 3
• No External LSA: Type 5
• only 1 ABR, automatically generates a default route inside the stub toward the ABR: O*IA 0.0.0.0/0 [110/1563] via 192.168.30.10, 00:00:23, Serial0
• Gateway of last resort is 192.168.30.10 to network 0.0.0.0
• Redistributed routes (OSPF external routes or Type 5) are not advertised into a Stub Area
• OSPF Inter-area routes are Advertised into a stub area
• The ABR will advertise a default into the stub area
• area 1 stub configured on all routes in the area
• NEED: AREA 2 COST 10 [or the cost will be 1]
• Type 1 & 2 [Inter-area]
• Type 3 & 4 [Intra-area]
• No Type 5 [externals]
• Automatically creates a default route