Access VPN Solutions Using Tunneling Technology (1): Layer 2 Forwarding Case Study
Case Study Overview
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L2F Case Study Overview

Table Of Contents

L2F Case Study Overview

Introduction

Device Characteristics

Configuration Tasks


L2F Case Study Overview


Introduction

This case study describes how one Internet service provider (ISP) plans, designs, and implements an access virtual private network (VPN) by using Layer 2 Forwarding (L2F) as the tunneling protocol. L2F forwards Point-to-Point (PPP) sessions from one router to another router across a shared network infrastructure.

This case study is primarily intended for network administrators and operations teams working for ISPs who provide access VPN services to enterprise customers. This case study is also useful to enterprise customers who want to establish access VPNs.

This access VPN:

Enables remote employees to access the enterprise customer's intranet resources when and where they want to

Allows enterprise customer's networks to span from an intranet to remote clients who are connected to analog modems

shows an enterprise customer with a specific business objective. The enterprise customer wants to give 500 users dial-up