GNS3 Fundamentals Training in Colombo

GNS3 Fundamentals Training in Colombo, Sri Lanka

This course provides participants with the foundational knowledge and hands-on skills needed to use Graphical Network Simulator-3 (GNS3) for designing, simulating, and testing network topologies.

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GNS3 Fundamentals Training is a professional training program delivered by ProgNXT in Colombo, Sri Lanka. ProgNXT, a globally recognized corporate training provider in 55+ countries, offers this GNS3 Fundamentals Training course with hands-on, instructor-led sessions. This training provides participants with the foundational knowledge and hands-on skills needed to use Graphical Network Simulator-3...

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Course Code: PSZ23
14 Hrs
Last Updated: April 2026

Course Rating5/5

This training provides participants with the foundational knowledge and hands-on skills needed to use Graphical Network Simulator-3 (GNS3) for designing, simulating, and testing network topologies. The course covers installation, configuration, device integration, and practical labs that allow learners to emulate real-world networking scenarios using GNS3.

Welcome to the official GNS3 Fundamentals Training certification program in Colombo, Sri Lanka. This comprehensive training is designed to elevate your professional skills and provide you with practical, industry-relevant knowledge locally. As a globally recognized corporate training provider operating in 55+ countries, ProgNXT ensures that our curriculum meets the highest standards of excellence.

Whether you are looking to upskill your team or advance your personal career, our expert-led sessions will guide you through the core concepts of this domain. Upon successful completion of the 14 Hrs program, participants will receive a globally accepted certification, demonstrating their proficiency and readiness to tackle complex challenges in the field.

Basic knowledge of networking concepts (IP addressing, routing, switching)
Familiarity with Cisco IOS commands (preferred but not mandatory)
Laptop with GNS3 pre-installed

At the end of this course, participants will be able to confidently use GNS3 to create, simulate, and troubleshoot various network environments. They will be prepared to leverage GNS3 for Cisco/CCNA/CCNP lab practice, network testing, and design validation.

Install and configure GNS3 environment
Build and simulate network topologies
Integrate routers, switches, and virtual machines in GNS3
Configure and troubleshoot IP routing and switching
Capture and analyze network traffic within GNS3
Apply GNS3 for exam preparation and proof-of-concept testing

GNS3 installation and workspace setup
Device configuration and topology design
Routing and switching configuration in GNS3
Packet capture and traffic analysis
Troubleshooting simulated networks

ProgNXT Certificate of Completion will be awarded to participants who complete the course and pass the evaluations.

Introduction and GNS3 Setup

Module 1: Introduction to GNS3

What is GNS3 and its benefits
GNS3 architecture and components (GUI, server, devices)

Module 2: Installing and Configuring GNS3

Installation of GNS3 on Windows/Linux
Setting up GNS3 VM integration
Configuring GNS3 preferences (paths, RAM/CPU, network adapters)

Module 3: Working with GNS3 Devices

Adding Cisco IOS images to GNS3
Integrating IOU, QEMU, and VirtualBox/VMware VMs
Understanding device templates in GNS3

Module 4: Building First Topology

Creating basic topologies in GNS3 workspace
Connecting nodes with Ethernet links
Saving, exporting, and importing projects

Network Simulation and Troubleshooting

Module 5: Configuring Routing in GNS3

Static routing between routers
Dynamic routing protocols (RIP, OSPF, EIGRP)
Verifying routing tables and connectivity

Module 6: Switching in GNS3

Using Ethernet switches and IOU L2 images
VLAN configuration and trunking in GNS3

Module 7: Network Services and Traffic Analysis

DHCP and DNS emulation in GNS3
Capturing packets with Wireshark inside GNS3
Analyzing traffic for troubleshooting

Module 8: Troubleshooting and Best Practices

Common GNS3 issues (CPU/memory usage, IOS licensing)
Saving/restoring topologies efficiently
Best practices for lab organization

Module 9: Final Hands-On and Wrap-Up

Review of key concepts and assessment discussion
Q&A and feedback

Participants will receive course materials, slides, reference materials, exercises and access to resources for further learning.

Participants will be evaluated based on:
Daily quizzes, mock questions and query resolution. Participation in hands-on exercises and labs. Performance in the final review and hands-on exercises will be evaluated.
ProgNXT Certificate of Completion will be awarded to participants who complete the course and pass the evaluations.

GNS3 Fundamentals Training Events in colombo

Online Events

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More Upcoming Session Dates

October 2026

🌐 Online Instructor-Led

22nd Oct 2026→23rd Oct 2026

📍 Colombo, Sri Lanka

27th Oct 2026→28th Oct 2026

November 2026

📍 Colombo, Sri Lanka

5th Nov 2026→6th Nov 2026

🌐 Online Instructor-Led

7th Nov 2026→8th Nov 2026

🌐 Online Instructor-Led

23rd Nov 2026→24th Nov 2026

📍 Colombo, Sri Lanka

28th Nov 2026→29th Nov 2026

December 2026

📍 Colombo, Sri Lanka

2nd Dec 2026→3rd Dec 2026

🌐 Online Instructor-Led

4th Dec 2026→5th Dec 2026

📍 Colombo, Sri Lanka

22nd Dec 2026→23rd Dec 2026

🌐 Online Instructor-Led

24th Dec 2026→25th Dec 2026

Events for other courses in Colombo, Sri Lanka

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GNS3 Fundamentals Training in Colombo