The OSPF interior routing protocol is a very popular protocol in enterprise networks. This chapter will present a brief history of OSPF and provide a comparison with the IS-IS routing protocol, since this is also a link state routing protocol.
We will be learning the basics of OSPF, its features and configuration, and much more. We will be creating multiple labs, since OSPF has different aspects that we need to learn for the certification and the real world. Not only will we be looking at single-area OSPF, but also multi-area OSPF.
The following topics will be covered in this chapter:
- History of OSPF
- SPF tree calculation
- OSPF metrics
- Configuring OSPF
- Wildcard calculations
- Configuring OSPF in our network
- OSPF DR and BDR
- Verifying OSPF
- OSPF scalability
- Categories of multi-area components
- OSPF router roles
- Types of LSAs
- OSPF Hello protocol...