Configuration of the epipe/l2circuit on the Nokia 7750 SR/7250 IXR

How to add Cisco IOU Image on Eve-ng Up and Running

Step 1#

Download Linux L2/L3 adventerprise Image 

Step 2#

Upload the downloaded image to the EVE path /opt/unetlab/addons/iol/bin/ using WinSCP or Filezilla

Step 3#

Fix the permission for the added image using the below command

/opt/unetlab/wrappers/unl_wrapper -a fixpermissions

Step 4#

Create an iou keygen file Copy the Cisco IOU Image Script provided below and add to the script

vim /opt/unetlab/addons/iol/bin/ioukeygen.py

Esc:wq

Step 5#

Fix the permission for the Python script

chmod –x vim /opt/unetlab/addons/iol/bin/ioukeygen.py

Step 6#

Run the license generator script 

/opt/unetlab/addons/iol/bin/ioukeygen.py

copy the license generated by the script

Step 7#

Create iourc license file for your EVE

vim /opt/unetlab/addons/iol/bin/iourc

Paste the output captured in Step 6

Step 8#

Fix the permission and start practicing your lab by adding the image on eve-ng web

/opt/unetlab/wrappers/unl_wrapper -a fixpermissions

Cisco IOU Image Script#

#! /usr/bin/python3

print("*********************************************************************")

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

import os

import socket

import hashlib

import struct

# get the host id and host name to calculate the hostkey

hostid=os.popen("hostid").read().strip()

hostname = socket.gethostname()

ioukey=int(hostid,16)

for x in hostname:

 ioukey = ioukey + ord(x)

print("hostid=" + hostid +", hostname="+ hostname + ", ioukey=" + hex(ioukey)[2:])

# create the license using md5sum

iouPad1 = b'\x4B\x58\x21\x81\x56\x7B\x0D\xF3\x21\x43\x9B\x7E\xAC\x1D\xE6\x8A'

iouPad2 = b'\x80' + 39*b'\0'

md5input=iouPad1 + iouPad2 + struct.pack('!i', ioukey) + iouPad1

iouLicense=hashlib.md5(md5input).hexdigest()[:16]

print("\nAdd the following text to ~/.iourc:")

print("[license]\n" + hostname + " = " + iouLicense + ";\n")

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

   out_file.write("[license]\n" + hostname + " = " + iouLicense + ";\n")

print("^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\nAlready copy to the file iourc.txt\n ")

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

print(" echo '127.0.0.127 xml.cisco.com' >> /etc/hosts\n")

# end of the script

Final output on eve-ng

Refer to the video with the steps