Introduction to OSPF

4/22/05


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Table of Contents

Introduction to OSPF

Note: Routing and Forwarding

OSPF Background

Link State Algorithm

Link State Routing

Low Bandwidth Requirements

“Shortest Path First”

OSPF: How it works

OSPF: How it works

OSPF: How it works

OSPF: How it works

Broadcast Networks

Designated Router

Designated Router

Designated Router

Designated Router Priority

More Advanced OSPF

OSPF Areas

OSPF Areas

Virtual Links

Classification of Routers

OSPF Route Types

External Routes

External Routes

Route Authentication

Equal Cost Multipath

Summary

Introduction to OSPF

 Author: Philip Smith

Home Page: http://www.ws.afnog.org/

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