Then find the line by connecting to ‘CiscoIOUKeygen. Md5input=iouPad1 + iouPad2 + struct.pack(‘!i’, ioukey) + iouPad1

Modified to work with python3 by c_d 2014 :/home/gns3/GNS3/images# python3 CiscoIOUKeygen.py If you enjoyed this tutorial, please share with your friends and colleagues! Now you can power on your IOU L2 devices for use in gns3. :~$ lsĬopy the displayed key, go to gns3, click on the edit tab, click on preference, navigate to IOS on Unix and paste the license obtained, click apply and OK. Our database comes in the following forms: JSON, CSV, XML, Cisco vendorMacs.xml. Step5: Finally, enter the command “cat iourc.txt” to display the license key. Download an exhaustive MAC Address Vendor Database for your educational. You can disable the phone home feature with something like:Įcho '127.0.0.127 ' > /etc/hosts Step5: Run this command: ‘ Python3 CiscoIOUKeygen3f.py‘ to generate the desired licence ‘ iourc.txt‘ :~$ python3 CiscoIOUKeygen3f.py

Step3: Use the list command to verify that a directory called CiscoIOUKeygen3f.py has been created. Step2: Copy and paste the command below into the terminal and hit the enter key:īe careful not to copy the quotation signs. Hit the enter key a couple of time and using the down arrow key, navigate to the shell option and hit the enter key. Step1: Ssh to the IP address of your gns3vm using putty or any other terminal emulation software. I am assuming that your gns3 is installed and linked to the gns3 VMware and that your Cisco IOU L2 image has been download and successfully imported into the Cisco IOU L2 appliance.Īt this point, an attempt to run the appliance without the license key, you will get an error that says “Could not find an iourc file (IOU license), please configure an IOU license” To get rid of this error, follow the steps below. In this post, I will share four easy steps to generate and install the Cisco IOU L2 keygen license for use in gns3.

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