Chapter 6: OSPF
Open Shortest Path First (Open Shortest Path First, OSPF) is a link state-based Interior Gateway Protocol (Interior Gateway Protocol) developed by the IETF. Currently, OSPF Version 2 (RFC2328) is used for the IPv4 protocol; OSPF Version 3 (RFC2740) is used for the IPv6 protocol. Unless otherwise specified, OSPF mentioned in this chapter refers to OSPF Version 2.
Purpose After learning the contents of this chapter, we should be able to:
- Understand the advantages of dynamic routing protocols over static routing protocols
- Understanding the Classification of Dynamic Routing
- Master some basic concepts in OSPF
- Understand 5 types of packets and 7 types of neighbor state machines in OSPF protocol
- Understand the establishment process of OSPF neighbors and adjacency relationships
6.1 Dynamic Routing Protocols
Dynamic routing protocols are widely used in live networks because of their high flexibility, good reliability, and easy expansion. Among dynamic routing protocolsÿ