Mininet-Topology-Generator

Simple Data Center Topology Generator

The reason i've written this script is because the sudo mn --topo tree,node,leafnode command takes a lifetime and core dumps most of the time.

Install Mininet by following the instructions at :
https://github.com/mininet/mininet

Once installed run the topogen script as follows:

• sudo python topogen.py <no-of-switches> <no-of-hosts>
  

• Example: sudo python topogen.py 4 16 creates a datacenter topology with 4+ switches and 16 hosts.
  

The diagram below shows the type of topology being generated:

To Enable Pox Firewall

Clone the Pox Repo from the following address:
-https://github.com/noxrepo/pox

Run the topogen_remote.py script with the same syntax as above

• Here each node gets assigned a mac address in the follwing form:
  
  • If node number a<100 : MAC:: 00:00:00:00:00:01.........00:00:00:00:00:99
    
  • If node number a>=100: MAC: 00:00:00:00:01:00.........00:00:00:00:09:99
    

Use the following tutorial to create the firewall script:

• http://www.anshumanc.ml/networks/2017/09/19/firewall/
  

The firewall.py script provided in the repo adds few random firewall rules. Feel free to edit it as per your liking.

Always controller c[0] is used as remote controller since it takes all connections.

Run the scripts as per the tutorial and now you have a network setup with a working firewall :)

To generate a network with random link and host parameters.. use the random_var_topogen.py script