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

Configuring OSPF Authentication: A Step-by-Step Guide with Sample Configuration

As we all know, security is a big factor in today’s network. We can make our network a bit more secured by enabling ospf authentication. OSPF authenticated routers will allow incoming connections only from the router which are having the same key configured. We can configure ospf authentication in 2 ways: Simple and md5. Simple … Read more