OSPF without Area 0: Understanding OSPF Routing in Multi-Area Networks
Introduction OSPF is a hierarchical routing protocol. Hence everything between different areas should pass through area 0. Areas are defined as logical grouping of ospf router’s interface in a single routing domain. Area 0 is considered to be the backbone area and two different areas(e.g 1 and 2) will exchange routes only if they are connected by … Read more