OSPF Hello Packets :: Area Types (Stub/NSSA) :: BDR/DR :: Practical OSPF скачать в хорошем качестве

OSPF Hello Packets :: Area Types (Stub/NSSA) :: BDR/DR :: Practical OSPF

In this lesson we take a look at Hello Packets and explore all the items they contain. Understanding the content of a Hello packet will show us the requirements for OSPF Routers to become Neighbors with each other. The Hello packet also includes Area Type and BDR/DR/Priority, which allows us to explain the ideas of Stub areas and Not So Stubby Areas (NSSA). As well as the concepts of the Designated Router (DR), Backup Designated Router (BDR), and the Priority Number. Here are all the contents of a Hello packet that are explained: Router ID, Area ID, Authentication Data, Network Mask, Hello Interval, Dead Interval, Area Type, Priority Number, Designated Router, Backup Designated Router, and Active Neighbors fields. This is Lesson 3 of the Practical OSPF series:    • Practical OSPF   00:00 - Start 00:12 - Hello Packet Introduction 01:43 - Router ID 02:36 - Hello Interval / Dead Interval 03:39 - Neighbors Field 05:03 - Area ID 05:18 - Authentication Data 05:51 - Network Mask 06:03 - Area Type / DR / BDR Introduction 06:19 - Normal Area, Stub Area, Not So Stubby Area (NSSA) 11:20 - Designated Router, Backup Designated Router, Priority 14:13 - When does DR/BDR election take place? Multi Access Links 15:35 - What fields must Match in Hello Packets? 17:47 - Outro 💬 Join us on Discord: https://pracnet.net/discord 📜 More free CCNA resources: https://www.practicalnetworking.net/i... #ospf #ccna #hello