Downloading and Configuring Cisco IOL Images

In order to run Cisco IOL images, you need to download and configure them properly. In this article, we will guide you through the process of downloading and configuring Cisco IOL images.

The first step is to download the IOU licence key generator named CiscoIOUKeygen3f.py from here. Once downloaded, upload it to EVE-NG under the location `/opt/unetlab/addons/iol/bin/`.

Next, you need to add the IOU licence under the EVE-NG to run the IOU/IOL image. To do this, open a cli and change the directory using the command `cd /opt/unetlab/wrappers/unl_wrapper -a`. Then, check if the images are uploaded correctly.

If not able to download the python code, you can copy and save it with the same filename. The file will contain the following script:

```

-rwxr-x 1 root root 184759244 No need to fix the permission of the license file as we will run this file using the python program.

-rw-r--r-- 1 root root 1201 Jun 7 12:07 CiscoIOUKeygen3f.py

Verify licence file is uploaded as below. Once download, again upload this licence file to EVE-NG directory “/opt/unetlab/addons/iol/bin/.”

print('You can disable the phone home feature with something like:')

out_file.write('

' + hostname + ' = ' + iouLicense + '

with open('iourc.txt', 'wt') as out_file:

print('

' + hostname + ' = ' + iouLicense + '

print('Add the following text to ~/.iourc:')

iouLicense=hashlib.md5(md5input).hexdigest()

md5input=ioupad1 + ioupad2 + struct.pack('!i', ioukey) + ioupad1

print('hostid=' + hostid + ', hostname='+ hostname + ', ioukey=' + hex(ioukey))

get the host id and host name to calculate the hostkey

print('Cisco IOU License Generator - Kal 2011, python port of 2006 C version')

if not able to download copy and save below python code with same filename.

```

After uploading the images, you need to fix the permission of the images using cli command `cd ls /opt/unetlab/wrappers/unl_wrapper -a EVE-NG:~#`. Finally, open cli access to EVE-NG using a tool like Putty and upload the IOU/IOL images under the location `/opt/unetlab/addons/iol/bin/`.

By following these steps, you should be able to download and configure Cisco IOL images successfully.

Cisco iol images download