How to Install GNS3 IOU on Linux/Ubuntu 17.10? – In order to use Cisco L2 and L3 images on GNS3, you need to configure the IOU.
How to Install GNS3 IOU on Linux/Ubuntu 17.10?

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

In order to use Cisco IOU images on Linux systems, we will install GNS3 with IOU support. Before I set up the GNS3 IOU, let’s talk briefly about what is the IOU and what it does.

What is IOU in GNS3?

IOU (IOS on Unix) is a technology that looks like Dynamips but uses fewer resources. IOU images imitate all the features of a particular Cisco IOS technology.

The IOU is also referred to as the Cisco IOU. IOU images do not require a hypervisor to imitate the Cisco hardware, and IOU images are much more powerful than Dynamips. IOU use in GNS3 uses system memory and CPU less.

As a result, using Cisco IOU images on GNS3 allows you to create more specific network topologies.

How to Install GNS3 with IOU Support in Linux?

Cisco IOU Installation Guide (GNS3 IOU Tutorial)

  1. Install GNS3
  2. Download Cisco IOU L2
  3. Download Cisco IOU License Generator
  4. Edit iourc.txt (GNS3 IOU License File) with Cisco IOU Keygen

Download the Cisco IOU L2/L3 images and CiscoIOUkeygen.py file to your computer by searching in Google for the GNS3 IOU installation on Linux/Ubuntu 17.10.

Next, follow the steps below for installing GNS3 IOU on Ubuntu 17.10.

   Step 1

First of all, to install GNS3 on Ubuntu, open the Terminal and execute the following commands in order.

sudo add-apt-repository ppa:gns3/ppa
sudo apt-get update

 
How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 2

After adding GNS3 to Repository, execute sudo apt-get install gns3-gui to start the installation.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 3

Setup reports that it will use 811 MB of additional disk space. Type Y (Yes) and press Enter.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 4

Press Enter on the No option to not allow non-superusers to run GNS3.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 5

Also, continue with No to not allow non-superusers to perform packet analysis using the Wireshark program.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 6

To start GNS3, type gns3 on the Terminal and press Enter.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 7

You can check the GNS3 version from Help/About.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

How to Install and Configure Cisco IOU in GNS3 on Ubuntu?

After installing GNS3 on Ubuntu 17.10, we will enable IOU support on Ubuntu. Follow the steps below to install Cisco IOU on Ubuntu.

   Step 1

For IOU setup, open the Terminal and execute the following commands in order.

sudo dpkg --add-architecture i386
sudo apt-get update
sudo apt-get install gns3-iou

 
How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 2

To license Cisco IOU images on GNS3, run CiscoIOUKeygen.py and paste the generated code into the iourc.txt file and save the file.

python3 CiscoIOUKeygen.py

 
How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 3

Copy the code and paste it into the iourc.txt file.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 4

Run GNS3 again.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 5

In the Setup Wizard window, select Run topologies on my computer and click on the Next button.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 6

Click the Next button in the Local server configuration window.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 7

After the local server connection is established, click on the Next button.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 8

Close the New appliance template window by clicking on the Cancel button.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 9

Create a new project on GNS3.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 10

Once you have installed the GNS3 IOU, click Edit on the GNS3 menu to license the IOU images, then click Preferences.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 11

In the Preferences window, click IOS on Unix and then click the Browse button.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 12

Navigate to the location where you have located the iourc.txt file and select the file and click on the Open button.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 13

Once you have licensed the IOU, click on IOU Devices.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 14

Click the New button to add Cisco IOU image on GNS3.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 15

In the GNS3 IOU window, type a name for the IOU image to be added and indicate the location of the IOU image from the IOU image option. Then click the Finish button to add the Cisco IOU image.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 16

In the image below, you can see the Cisco IOU image information you added.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

   Step 17

Add the Cisco IOU Router you added to the workspace and run the Router. You can view the Cisco IOU image information by using the show version command.

How to Install GNS3 IOU on Linux/Ubuntu 17.10?

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How to Install GNS3 IOU on Linux/Ubuntu 17.10? ⇒ Video

For the IOU-supported GNS3 installation on Ubuntu 17.10, you can watch the following video and also subscribe to our YouTube channel to support us…

  Final Word

How to Install GNS3 IOU on Linux/Ubuntu 17.10? – In this article, we have step-by-step explored how to set up GNS3 2.1.3 with IOU support on Linux systems to create more specific network topologies. Thanks for following us!

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