Why use a GNS3 VM instead of GNS3?

GNS3 (Graphical Network Simulator 3) is a computer network simulation tool widely used to design, test and deploy network architectures. So before exploring the benefits of the GNS3 VM, it is important to understand what GNS3 is and how it works. This article explains why it is beneficial to use a GNS3 VM to optimize your GNS3 experience. You will get tips on how to get the most out of this simulation platform.

What is GNS3 and how does it work?

GNS3 is a network simulation platform for creating and experimenting with virtual network topologies.

It supports many network devices. These include Cisco routers and switches, Juniper firewalls, and network storage devices.

GNS3 thus offers a user-friendly graphical environment for the design and simulation of complex networks. While allowing the integration of real equipment.

Why use a GNS3 VM instead of GNS3?

⇒ How to install GNS3 GUI on macOS, MacBook M1 and M2?

Dedicated resources for better performance GNS3

Using a GNS3 VM allows you to dedicate specific resources to your GNS3 environment. These resources include CPU, RAM and storage.

By separating the resources allocated to GNS3 from those of your operating system, you can improve the overall performance of your simulation environment. This avoids latency and overload problems.

Isolation to avoid conflicts with other applications

By choosing to use a GNS3 VM you create an isolated environment for your GNS3 projects.

This reduces the risk of conflicts with other applications and services on your local operating system. This can be especially useful if you are working on complex projects or if you are concerned about the security of your network.

Increased compatibility and performance with GNS3 VM

La GNS3 VM est optimisée pour fonctionner avec GNS3 et inclut les versions les plus récentes des outils et des logiciels nécessaires.

This optimization may result in better compatibility and performance for certain features, such as the use of QEMU-based network devices.

Easy to move and save GNS3 projects

Using a GNS3 VM makes it easy to move your GNS3 projects between different systems or to share projects with other users.

In addition, backing up your GNS3 VM is an easy way to keep your entire GNS3 environment in case of a problem with your computer.

Multi-platform for more flexibility with GNS3

The GNS3 VM can be used on different platforms like Windows, macOS or Linux. This is done using virtualization software such as VMWare or VirtualBox.

This allows you to work on your GNS3 projects independently of your operating system. It also offers greater flexibility and facilitates collaboration between different members of a team.


In short, using a GNS3 VM offers many advantages for those who work regularly with GNS3.

Although installing a GNS3 VM is not strictly necessary, it improves the performance, isolation, compatibility and flexibility of your GNS3 experience.

By following the tips in this article you can make the most of your simulation environment and optimize your work with GNS3.

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