In this course, you'll learn about OSPF address families and how they permit the simple configuration of OSPF for IPv4 and IPv6 in one section of your running configuration. Next, you'll explore the importance of network security and how adding authentication to OSPF peerings enhances security. You'll look at OSPF network types and how they allow you to alter OSPF behavior over the link to make things more efficient. You'll move on to examine OSPF router types and area types. Finally, you'll learn about OSPF path preference and the order in which OSPF prefers paths. This course is one of a series that prepares you for the 300-410: Implementing Cisco Enterprise Advanced Routing and Services (ENARSI)certification exam.