OSPF requires two routers to become neighbors before they can exchange OSPF LSAs and then calculate new routes. Chapter 21 of the CCNA 200-301 Volume 1 focuses on neighbor relationships. The chapter examines why some links require a Designated Router
This latest lab sets up the requirements for OSPFv2 configuration in a multi-area design. It also shows yet another case of the fact that you must master IPv4 subnetting to be ready for more advanced labs. As always, go try
When using the OSPF network command, whether single area of multi-area, you have to be careful with the wildcard mask used and which interfaces each network command matches. With multiple areas, that concern increases, because incorrect matching can place a
