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Index
GNS3 Network Simulation Guide
Table of Contents
GNS3 Network Simulation Guide
Credits
About the Author
About the Reviewers
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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
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