OSPF Areas and OSPF Types of Routers - Practical OSPF - Lesson 2

Understanding OSPF design requires understanding OSPF Areas. And to truly understand OSPF areas, you must understand OSPF types of Routers. We'll be explaining both of these concepts in this lesson. OSPF allows for a two-tier hierarchy with Area 0 (the backbone area) at the top, and every other area connected through Area 0. This creates a Hub and Spoke area design. Routers in OSPF are labeled based upon where they sit in the Area design. There are four types of OSPF Routers: Internal Routers, Backbone Routers, Area Border Routers (ABR), and Autonomous System Border Routers (ASBR). In this lesson we'll be illustrating the roles and functionalities of each of these Routers. 0:00 - Intro 0:20 - Why do we need OSPF areas? 2:44 - OSPF Area Types 3:55 - OSPF Types of Routers 4:58 - ABR - Area Border Router 6:08 - ASBR - Autonomous System Border Routers 7:16 - Summary 💬 Join us on Discord: https://pracnet.net/discord 📜 More free CCNA resources: https://www.practicalnetworking.net/index/ccna/ #ospf #ccna #backbone