GNS3 Network Simulation Guide电子书

GNS3 Network Simulation Guide

Table of Contents

GNS3 Network Simulation Guide

Credits

About the Author

About the Reviewers

www.PacktPub.com

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Why Subscribe?

Free Access for Packt account holders

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Errata

Piracy

Questions

1. Clearing the First Hurdle

Pre-installation tasks and prerequisites

Understanding the GNS3 family of applications

Memory and CPU

Router image files

Downloading GNS3

The installation process

Installing on Windows

Installing on OS X (Macintosh)

Installing on Linux Mint

Post-installation tasks

The setup wizard

Summary

2. Creating your First GNS3 Simulation

Jumping in the deep end – a basic two-router configuration

Conceptualizing a project

The topology.net file

The configs directory

The working directory

Opening a project

Getting to know the GUI

Tips for managing your workspace

Tips for managing your routers

Using VPCS (Virtual PC Simulator)

Capturing packets with Wireshark

Avoiding the 100 percent CPU utilization problem

Coming to grips with Idle-PC values

Introducing GNS3 generic switches

Ethernet switch

Frame-relay and ATM switches

Summary

3. Enhancing GNS3

Connecting to physical interfaces

Mini-project – connecting your GNS3 router to your LAN

Why can't my host computer ping my router?

The Microsoft Loopback adapter

The Linux NIO TAP adapter

The OS X TUN/TAP adapter

Adding VLAN support

Generic Ethernet switch

EtherSwitch router

Terminal tips

Using a different terminal application

Using the AUX port

Troubleshooting a device console

Fine-tuning the topology – adding graphics and text

Accessing GNS3 running on a remote machine

Accessing a device console remotely

Linking GNS3 topologies on different hosts

Summary

4. Unleashing Other Emulators

The Qemu emulator

Adding Qemu support

Linux

Qemu preferences

Microcore Linux using Qemu

Adding ASA firewalls

Adding Juniper routers (Junos)

The VirtualBox emulator

Adding VirtualBox support

A Windows PC on Oracle VirtualBox

A Linux PC on VirtualBox

Adding a Vyatta router using VirtualBox

Summary

5. The Cisco Connection

Cisco routers – emulated hardware

Cisco IOS

Platform

Feature set

Memory location and compression format

Train number

Maintenance release

Train identifier

RAM requirements and the feature navigator

Summary

6. Peeking under the GNS3 Hood

Understanding the topology.net file

Say hello to the hypervisor

The GNS3 orchestra

UDP tunnel concept

Conducting Qemu and VirtualBox

Debugging using the GNS3 management console

Summary

7. Tips for Teachers, Troubleshooters, and Team Leaders

Packaging your projects

Adding instructions

Managing snapshots

Using remote hypervisors

Remote hypervisor tutorial

Preparing the remote servers

Preparing the host computer

Load balancing across multiple hypervisors

Using your local GNS3 host as a hypervisor

Building the topology

Choosing the right platform

Using VPCS with remote hypervisors

Running GNS3 in a virtual machine

The GNS3 WorkBench solution

GNS3 Limitations

Ethernet interfaces are always up

Cisco router support

Host PC communication in a virtual machine environment

Getting more help

Official websites for all the GNS3 suite of programs

Other helpful online resources

Summary

Index