Information Technology Reference
In-Depth Information
Area 3
Area 0
Area 2
Area 1
Area 4
Figure 11-2
OSPF Areas
OSPF Router Types
OSPF classifies participating routers based on their place and function in the area archi-
tecture. Figure 11-3 shows OSPF router types.
Key
To p i c
ASBR
External
AS
Area 0
External
AS
Backbone
ABR
Area 2
Area 1
ABR
ASBR
Internal
Figure 11-3
OSPF Router Types
Ta ble 1 1- 3 explains each router type in Figure 11-3.
