The Book of GNS3 · Build Virtual Network Labs Using Cisco, Juniper, and More by Neumann, Jason C. -- Read -- Imperial Library of Trantor

Index

The Book of GNS3: Build Virtual Network Labs Using Cisco, Juniper, and More Table of Contents Foreword Acknowledgments Introduction

Who This Book Is For What’s in This Book

My Approach Book Overview

1. Introducing GNS3

Why Use GNS3?

Emulated Hardware Simulated Operating Systems Scalability with the GNS3 Server Virtual Connectivity

Open Source Integration

The Dynamips Hypervisor QEMU and VirtualBox

A Few Limitations

Some Assembly Required Limited Emulation Hamstrung Network Performance

Final Thoughts

2. Installing a Basic GNS3 System

General Requirements Installing on Microsoft Windows Installing on OS X Installing on Ubuntu Linux

Installing GNS3 from Packages Installing GNS3 from Source Code

Extracting the Source Code Updating the Package Manager Installing Dependencies Installing Dynamips Installing the GNS3 Server and GUI

GNS3 Appliances

A Few Pros and Cons GNS3 WorkBench Installing GNS3 WorkBench

Final Thoughts

3. Configuration

Acquiring an IOS Image Setting Up Your First IOS Router

Configuring Dynamips Adding IOS Images to GNS3 Setting a Manual Idle-PC Value

Final Thoughts

4. Creating and Managing Projects

Project Management Overview

Terminology Screen Layout

Using the GNS3 Toolbar

First Toolbar Group Second Toolbar Group Third Toolbar Group Fourth Toolbar Group

Using the Devices Toolbar Creating Your First Project

Working with Routers Creating Links Between Your Routers Configuring Virtual Hardware Starting, Stopping, and Pausing Routers Logging On to Routers

Ethernet Switch Nodes Changing Symbols and Organizing Your Devices Final Thoughts

5. Integrating Hosts and Using Wireshark

Virtual PC Simulator

Installing VPCS VPCS Commands VPCS IP Addressing

VirtualBox

Installing on Windows Installing on OS X Installing on Linux Importing Appliances VirtualBox Preferences VirtualBox Virtual Machine Settings Using VirtualBox Hosts in a Project Linking VirtualBox Host Nodes to Other Devices Simple VirtualBox Project Using a Linux Virtual Machine

Wireshark

Installing on Windows Installing on OS X Installing on Linux Capturing Packets in GNS3

Final Thoughts

6. Juniper Olive and VSRX Firefly

Installing QEMU on Windows and OS X Installing QEMU on Linux Introducing Juniper Installing Juniper

Process Overview Acquiring FreeBSD Acquiring Juniper Olive Software

Creating a Juniper Olive CD Image File

Creating an ISO in Windows Creating an ISO in OS X Creating an ISO in Linux

Installing and Configuring FreeBSD Using QEMU

Preparing Your Build Directory Installing a Junos-Friendly FreeBSD System

Preliminary Checks for Windows and OS X Getting Started Partitioning the Filesystem Finishing Installation of FreeBSD

Installing the Juniper Olive Package in FreeBSD

Getting Your Olive Up and Running Backing Up Juniper Olive

Configuring a Juniper Router in GNS3

Adding the Juniper Virtual Machine to GNS3 Adding Ethernet Interfaces

Testing a Juniper Router Running Juniper vSRX Firefly

Creating a Firefly Virtual Machine with VirtualBox Giving Your Virtual Machine More Processors Adding vSRX Firefly to GNS3 Creating a Project with a Zone-Based Firewall

Final Thoughts

7. Device Nodes, Live Switches, and the Internet

Built-in Device Nodes Node Configurator Ethernet Hub EtherSwitch Router Frame Relay Switch

Simple Frame Relay Hub and Spoke Configuration Creating a Frame Relay Switch Using IOS

ATM Switch Cloud Nodes Connecting GNS3 Devices to Physical Hardware

Dynamips Permissions Preparing Your PC for a Bridge Using a Loopback Adapter on Windows TUN/TAP Drivers on OS X TUN/TAP Drivers on Ubuntu Linux

Connecting to Live Switches

Configuring a Standard 802.1Q Trunk Creating the Elusive Breakout Switch Optional Breakout Switch Configuration Using Multiple Adapters in Your PC

Connecting GNS3 Devices to the Internet

Configuring Windows Configuring Unix-Based Systems Creating a Simple Network

Final Thoughts

8. Cisco ASA, IDS/IPS, and IOS-XRv

Cisco Configuration Professional

Project Configuration CCP Installation Running CCP

Cisco ASA Firewall

Acquiring an Image Prepping the ASA Image for GNS3 Configuring GNS3 for ASA Testing an ASA in GNS3

ASDM Installation Cisco IDS/IPS

Acquiring an IDS/IPS Image Creating a QEMU-Ready IDS/IPS System Hijacking the Hardware Testing IDS/IPS (or Patience Is a Virtue) Configuring GNS3 for IDS/IPS Verifying IDS/IPS in GNS3

Cisco IOS-XRv

Configuring GNS3 for IOS-XRv Creating a Simple IOS-XR Project

Configuring the Router Configuring the IOS-XR Device

Final Thoughts

9. Cisco IOS On UNIX and NX-OSv

Cisco IOU

What IOU Means to GNS3 Switching, Switching, and More Switching! IOU Images Things to Know Before Installing IOU

Setting Up IOU on a Linux PC

Installing IOU Creating a License File Configuring GNS3

Using the GNS3 IOU Virtual Machine on Windows and OS X

Importing the GNS3 IOU Virtual Machine into VirtualBox Uploading IOU Image Files Configuring GNS3 for IOU IOU in Action

NX-OSv

Importing NX-OSv into VirtualBox Configuring GNS3 for NX-OSv NX-OSv in Action

Final Thoughts

10. Cool Things To Do on a Rainy Day

Managing Devices from an Access Server

Installing the Virtual Interface

Configuring a Loopback Adapter in Windows Configuring a TAP Adapter in Linux

Preparing the GNS3 Server Creating a Virtual Access Server in GNS3

Configuring the Cloud Node Configuring the Access Server Router

Configuring a Cisco IP Hostname Table Seeing the Virtual Access Server in Action

Opening Consoles Closing Consoles Setting Connection Timeouts

Deploying Configurations to Real Hardware

Exporting GNS3 Configurations to Cisco Routers Importing Cisco Router Configurations into GNS3

Copying GNS3 Projects Between Platforms

IOS-Only Projects Projects with IOU Devices Projects with VirtualBox Devices

Exploring the GNS3 Console Creating Projects Using Multiple PCs

A Dynamips Client/Server Setup

Preparing Your Workstations Running gns3server Configuring the Client

Creating a GNS3 Uberlab

Nerdy Labs for Fun and Profit

Preparing for Cisco Exams Securing Your Networks

The “Hack My Rack” Challenge Creating Cisco VPNs

Practicing Real-World Scenarios

Cisco Switch Block Design Multihomed Networks Multiple Vendor Integration Use Everything, Including the “Kitchen Sink” How Many Routers Does It Take to Blow Out a Lightbulb? Routers Gone Rogue

Final Thoughts

A. Help! I’ve Fallen and I can’t Get Up

Identifying the Problem Sudden Problems

Stopping Dynamips Crashes When IOS Images Fail to Load Resolving IOS Memory Errors Resolving NIO Errors Correcting Console Problems

Feature Problems

Configuration Issues Using Unsupported IOS Images

The Nuclear Option Overburdened Hardware Resolving Port Number Conflicts Troubleshooting an ASA Conserving Resources

Select Devices Carefully Optimize Idle-PC Values

Backing Up Your Projects Welcome to the Jungle Final Thoughts

B. Cisco Hardware Compatible with GNS3

Supported Cisco Hardware IOS Compatibility

C. NM-16ESW and IOU L2 Limitations

Unsupported NM-16ESW Features Unsupported Features in Cisco IOU L2 Images

Glossary Resources About the Author Index Copyright

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