Course Outline

Overview of GNS3 for Network Simulation

  • GNS3 architecture and capabilities for design/testing
  • GNS3 vs. physical labs vs. other simulators
  • Recommended hardware, OS, and setup tips

Preparing the GNS3 Environment

  • Installing GNS3 GUI and GNS3 VM
  • Connecting GNS3 to real devices and virtual machines
  • Using Docker containers, appliances, and external tools

Building Enterprise Network Topologies

  • Layer 2 and Layer 3 network components
  • Multi-site WAN and data center simulation
  • Cloud/hybrid architecture representation in GNS3

Replicating Production Environments

  • Capturing configurations from live networks
  • Importing existing routing/switching setups
  • Designing scalable testbeds with realistic traffic

Testing, Validation, and Documentation

  • Traffic generation and fault injection techniques
  • Automated testing scenarios (BGP failover, QoS, ACLs)
  • Packet capture and flow validation with Wireshark

Integration with Other Tools

  • Connecting GNS3 to VirtualBox, VMware, or KVM
  • Using Linux-based services (DHCP, DNS, FTP) in topologies
  • Linking with network automation tools (e.g., Ansible)

Advanced Use Cases and Best Practices

  • Using GNS3 for network migrations and proof-of-concept testing
  • Load testing, failover simulation, and performance tuning
  • Client demonstrations and architecture validation exercises

Summary and Next Steps

Requirements

  • Strong understanding of network protocols and architectures
  • Experience configuring network equipment (routers, switches, firewalls)
  • Familiarity with virtualization and system administration tools

Audience

  • Network engineers and system architects
  • IT consultants responsible for network planning and migration
  • QA and testing teams evaluating network changes
  • Professionals involved in lab replication of production environments
 21 Hours

Delivery Options

Private Group Training

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  • Pre-course call with your trainer
  • Customisation of the learning experience to achieve your goals -
    • Bespoke outlines
    • Practical hands-on exercises containing data / scenarios recognisable to the learners
  • Training scheduled on a date of your choice
  • Delivered online, onsite/classroom or hybrid by experts sharing real world experience

Private Group Prices RRP from €6840 online delivery, based on a group of 2 delegates, €2160 per additional delegate (excludes any certification / exam costs). We recommend a maximum group size of 12 for most learning events.

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