Dynamic Routing and OSPF


Table of Contents

Dynamic Routing and OSPF

Static and Dynamic Routing

Desirable Characteristics

Convergence - Why do I care?

Other Interior Gateway Protocols (IGPs)

Why not use RIP?

OSPF

Shortest Path First

Link State Algorithm

Note: Routing is not the same as Forwarding

Routing and Forwarding

OSPF: How it works (1)

How it works (2)

How it works (3)

How it works (4)

How it works (5)

HELLO

The HELLO packet

Neighbors

Who is adjacent?

Broadcast neighbors

Broadcast medium

LSAs propagate along adjacencies

Other nice features of OSPF


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