How to Install GNS3 on Mac

This article shows you how to set up and use GNS3 2.2.28 in macOS 12 Monterey on an Apple Mac computer.

Students preparing for Cisco exams may be using the Packet Tracer program mainly, but it is recommended to use the GNS3 software to design a more professional network.

With GNS3, you can create projects as if you are using an actual device by emulating Cisco Router and Switch IOS images.

You can follow this video tutorial or the steps below to install the GNS3 simulator program in the latest macOS version.

Step 1: Visit the official website of GNS3 from the link below and if you do not have a new account, create one and then click Free Download.

Step 2: Download GNS3 for Mac when you come across the download page for Windows, Mac, and Linux systems.

Step 3: After downloading the GNS3.dmg file to your computer, double-click on it to start the installation.

Step 4: After viewing the contents of the DMG file, drag and drop the GNS3 program to Applications.

Step 5: After completing the copying process, open Applications and run the GNS3 software.

Step 6: After running GNS3, select “Run appliances on my local computer” in the Setup Wizard window.

Step 7: Finally, configure the Local Server.

Step 8: Open Preferences to add a Cisco Router IOS image to GNS3.

Step 9: Click the New button after clicking Dynamips / IOS Routers. In the IOS Image window, specify the location of the IOS image of the Router you downloaded to your computer.

Step 10: After adding the Router IOS image, click the Idle-PC Finder button in the next window and find a suitable value for your computer’s processor.

Step 11: After adding Cisco IOS, you can watch how to add and configure Router and VPCS by following our video tutorial.

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