EVE-NG on GCP: Step-by-Step Setup Tutorial

ByDynamips

GNS3 is a popular network simulation tool that allows users to create virtual networks using software images of real network devices. One of the most important components of GNS3 is the Cisco IOS image. These images are the software files that are used to emulate Cisco hardware in GNS3.

In this article, we’ll take a look at how to download Cisco IOS images for GNS3 and how to use them to create a virtual network.

First, it’s important to note that Cisco IOS images are copyrighted material and cannot be freely downloaded from the internet. However, there are a few legitimate ways to obtain these images:

  1. Purchase them directly from Cisco: You can purchase Cisco IOS images from Cisco’s website. This is the most legitimate way to obtain these images, but it can also be the most expensive.
  2. Obtain them from a current or former employer: If you have worked for a company that uses Cisco hardware, you may be able to obtain IOS images through that company. However, it’s important to note that using these images without permission could be a violation of company policy.
  3. Download them from a reputable source: There are a few websites that offer Cisco IOS images for download, but it’s important to be cautious. Make sure the website is reputable and the images are legitimate.

Once you have obtained a Cisco IOS image, the next step is to add it to GNS3. Here’s how:

  1. Open GNS3 and click on “Edit” in the top menu bar.
  2. Click on “Preferences” and then select “QEMU VMs” from the left-hand menu.
  3. Click on “New” to add a new QEMU VM.
  4. In the “New QEMU VM” window, give your new VM a name and select the appropriate options for your IOS image. Make sure to select the correct architecture (e.g. x86) and version of the IOS image.
  5. Click “Next” and then “Finish” to complete the process.
  6. Your new VM should now be listed in the “QEMU VMs” section of the preferences window.
  7. To use your IOS image in a GNS3 project, simply drag the VM from the “QEMU VMs” section onto the GNS3 workspace.

In conclusion, downloading and using Cisco IOS images in GNS3 can be a powerful tool for network engineers and administrators. However, it’s important to obtain these images legally and use them responsibly. By following the steps outlined in this article, you can get started with GNS3 and begin creating virtual networks with Cisco IOS images.

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