Internet & Multimedia Project

Mininet/POX (Ubuntu 22.04)

Requirements

• Mininet: http://mininet.org/download/
• POX controller: https://github.com/noxrepo/pox
• Python: https://www.python.org/

Three basic applications:

Note: assume pox folder is into the home folder

1. Load Balancer
   Use POX controller as a load balancer. Follow these steps:

   • Open a terminal and move to the load_balancer folder:

   • Launch the Mininet topology with:

     sudo python3 lb_topo.py

   • Open a new terminal and launch the POX controller with:

     python3 /home/pox/pox.py log.level --DEBUG samples.pretty_log misc.ip_loadbalancer --ip=10.0.1.1 --servers=10.0.0.1,10.0.0.2

   • In the Mininet CLI run many times (replace X with the host number):

     hX curl 10.0.1.1

   • Watch the outputs/redirects on the POX terminal

2. Firewall
   Use POX controller as a network firewall. Follow these steps:

   • Copy the firewall.py file into the pox/pox/misc folder

   • Edit firewall.py rules list, to set your firewall rules

   • Open a terminal and launch the POX controller with:

     python3 /home/pox/pox.py log.level --DEBUG samples.pretty_log openflow.of_01 forwarding.l2_learning misc.firewall

   • Open a new terminal and move to the firewall folder

   • Launch the Mininet topology with:

     sudo python3 firewall_topo.py

   • In the Mininet CLI run:

     pingall

   • Watch the failed pings, according to the set firewall rules

3. Routing
   Use POX controller to forward traffic as a router. Follow these steps:

   • Open a terminal and launch the POX controller with:

     python3 home/pox/pox.py log.level --DEBUG samples.pretty_log forwarding.l2_pairs

   • Open a new terminal and move to the routers folder

   • Launch the Mininet topology with:

     sudo python3 router_topo.py

   • In the Mininet CLI, run:

     pingall

     h1 traceroute h2

   • In the Mininet CLI, simulate a network/link failure with:

     link r1 r2 down

   • In the Mininet CLI, run again:

     pingall

     h1 traceroute h2

   • Watch the new routes, network is still working