Hi, Can an OSPF router be included in two OSPF areas? What is the definition of an OSPF Area Border Router, is it - A router that is part of a single OSPF area (the router has only one link state database) but has an interface that connects to a different area? OR is it - a router that is included in two different areas (the router will have two link state databases)? Does Area Border Routers have copies of the link state databases of all areas it connects to? rgds, Joseph Placid