fat3.py

"""
mn.py:
    Script for running our sample topology on mininet
    and connect it into contorller on remote host.
Usage (example uses IP = 192.168.1.2):
    From the command line:
        sudo python mn.py --ip 192.168.1.2
"""
import argparse

from mininet.net import Mininet
from mininet.net import CLI
from mininet.log import setLogLevel
from mininet.node import RemoteController
from mininet.topo import Topo
from mininet.link import TCLink


class SampleTopo(Topo):
    """
    Subclass of mininet Topo class for
    creating fat-tree topology.
    """
    def build(self, *args, **kwargs):
        core1 = self.addSwitch(name='s1')
        core2 = self.addSwitch(name='s2')
        agg1 = self.addSwitch(name='s3')
        agg2 = self.addSwitch(name='s4')
        edge1 = self.addSwitch(name='s5')
        edge2 = self.addSwitch(name='s6')
        edge3 = self.addSwitch(name='s7')
        edge4 = self.addSwitch(name='s8')

        host1 = self.addHost(name='h1', mac="00:00:00:00:00:01")
        host2 = self.addHost(name='h2', mac="00:00:00:00:00:02")
        host3 = self.addHost(name='h3', mac="00:00:00:00:00:03")
        host4 = self.addHost(name='h4', mac="00:00:00:00:00:04")
        host5 = self.addHost(name='h5', mac="00:00:00:00:00:05")
        host6 = self.addHost(name='h6', mac="00:00:00:00:00:06")
        host7 = self.addHost(name='h7', mac="00:00:00:00:00:07")
        host8 = self.addHost(name='h8', mac="00:00:00:00:00:08")

        self.addLink(host1, edge1)
        self.addLink(host2, edge1)
        self.addLink(host3, edge2)
        self.addLink(host4, edge2)
        self.addLink(host5, edge3)
        self.addLink(host6, edge3)
        self.addLink(host7, edge4)
        self.addLink(host8, edge4)
        self.addLink(agg1, edge1)
        self.addLink(agg1, edge2)
        self.addLink(agg2, edge3)
        self.addLink(agg2, edge4)
        self.addLink(agg1, core1)
        self.addLink(agg2, core1)
        self.addLink(agg1, core2)
        self.addLink(agg2, core2)


if __name__ == '__main__':
    PARSER = argparse.ArgumentParser()
    PARSER.add_argument('ips', metavar='ip',
            help='POX Network Controllers IP Addresses',
            default=['127.0.0.1'], type=str, nargs='*')
    CLI_ARGS = PARSER.parse_args()

    setLogLevel('info')

    RCS = []
    for ip in CLI_ARGS.ips:
        RCS.append(RemoteController('POX-%s' % ip, ip=ip, port=6633))
    NET = Mininet(topo=SampleTopo(), link=TCLink, autoSetMacs=True)
    for rc in RCS:
        NET.addController(rc)
    NET.start()
    CLI(NET)
    NET.stop()