Complete Teaching of OSPF by Arash Deljoo

The Open Shortest Path First (OSPF) Zero-to-Hero include :

- OSPF Fundamentals

- OSPF Basic Configuration and Verification

- OSPF  Single Area - Traditional Configuration [1]

- OSPF  Single Area - Traditional Configuration [2]

- OSPF  Single Area - Explicit Configuration

- OSPF Single Area with Multi Access Network

- OSPF  Static Neighborship

- OSPF Dynamic Neighborship (A)

- OSPF Packets and States and Static Neighborship

- OSPF  Finite State Machine [FSM]

- OSPF DR and BDR

- OSPF LSA TYPE-1 ( Router LSA )

- OSPF LSA TYPE-2 ( Network LSA )

- OSPF LSA TYPE-3 ( Summary LSA )

-  OSPF LSA TYPE-5 ( External LSA )

-  OSPF LSA TYPE-4 ( ASBR-Summary )

- OSPF LSA Types Example

- OSPF Determining the Next Hop

- OSPF Special  Rule

- OSPF Default Route Advertisement

- OSPF Area Types

- OSPF Cost and Path Selection Rules

- OSPF Summarization

- OSPF Virtual Links

- OSPF Network Types

- OSPF Neighbor Adjacencies Troubleshooting

- OSPF Routes Troubleshooting

- OSPF Miscellaneous Issues and Trouble Tickets

- OSPFv3 Fundamentals and Basic Configuration

- OSPFv3 LSA Types

- OSPFv3 Instance-ID

- OSPFv3 Authentication and Encryption

- OSPFv3 Classic Configuration and Trouble Tickets

- OSPFv3 Address Family Configuration and Trouble Tickets

Open Shortest Path First is a routing protocol for Internet Protocol networks. It uses a link state routing algorithm and falls into the group of interior gateway protocols, operating within a single autonomous system.

OSPF gathers link state information from available routers and constructs a topology map of the network. The topology is presented as a routing table to the Internet Layer for routing packets by their destination IP address. OSPF supports Internet Protocol Version 4 (IPv4) and Internet Protocol Version 6 (IPv6) networks and supports the Classless Inter-Domain Routing (CIDR) addressing model.