GNS3 for Beginners

• Basic understanding of computer networking concepts
• Familiarity with Windows or Linux environments
• No prior experience with GNS3 is required

Audience

• Network engineers
• Technical support staff needing foundational network understanding
• Networking or virtualization professionals preparing for entry-level certifications (e.g., CompTIA Network+, CCNA)

GNS3 is a free and open-source network simulation tool used to design, configure, and test virtual and real networks in a graphical environment.

This instructor-led, live training (online or onsite) is aimed at beginner-level networking professionals who wish to learn how to use GNS3 to simulate basic networks and gain hands-on lab experience for certification and practical knowledge.

By the end of this training, participants will be able to:

• Install and configure GNS3 on their local system.
• Understand and use the GNS3 graphical interface and topology builder.
• Create and test basic network topologies with routers, switches, and PCs.
• Integrate GNS3 with tools like Wireshark for packet analysis.

Format of the Course

• Interactive lecture and discussion.
• Hands-on lab exercises in a virtual network environment.
• Real-world use cases and guided simulations.

Course Customization Options

• To request a customized training for this course, please contact us to arrange.

Introduction to GNS3

• What is GNS3 and what problems does it solve?
• How GNS3 compares to Packet Tracer and other tools
• GNS3 community, licensing, and ecosystem overview

Installing GNS3

• System requirements and dependencies
• Installing GNS3 GUI and GNS3 VM (local or remote)
• Integrating Wireshark and other useful tools

GNS3 User Interface and Project Setup

• Creating a new project and workspace
• Overview of toolbar, devices panel, and topology canvas
• Managing project files and configurations

Adding and Using Basic Devices

• Using Virtual PCs (VPCS) and Ethernet switches
• Importing and configuring Cisco IOS images (IOU/IOL)
• Understanding and setting device interfaces

Building Basic Topologies

• Creating a simple LAN and verifying connectivity
• Using the console for device configuration
• Saving and duplicating topologies

Basic Networking Labs

• Static routing and IP addressing
• Basic switch configuration
• Testing with ping and traceroute

Packet Capture and Troubleshooting

• Capturing traffic using Wireshark in GNS3
• Diagnosing basic connectivity issues
• Cleaning up and managing projects

Summary and Next Steps