switch_host3.py

#!/usr/bin/python

from mininet.net import Mininet

from mininet.node import Controller,RemoteController

from mininet.node import OVSKernelSwitch

from mininet.node import UserSwitch

from mininet.cli import CLI

from mininet.log import setLogLevel

from mininet.link import Link, TCLink

def topology():

    "Create a network."

    net = Mininet( controller=RemoteController, link=TCLink, switch=OVSKernelSwitch )

    print "*** Creating nodes"

    h1 = net.addHost( 'h1', mac='00:00:00:00:00:01', ip='0.0.0.0' )

    h2 = net.addHost( 'h2', mac='00:00:00:00:00:02', ip='192.168.10.1/24' )

    h3 = net.addHost( 'h3', mac='00:00:00:00:00:03', ip='192.168.10.2/24' )

    h4 = net.addHost( 'h4', mac='00:00:00:00:00:04', ip='192.168.20.1/24' )

    h5 = net.addHost( 'h5', mac='00:00:00:00:00:05', ip='192.168.20.2/24' )

    h6 = net.addHost( 'h6', mac='00:00:00:00:00:06', ip='0.0.0.0' )

    c7 = net.addController( 'c7', controller=RemoteController, ip='127.0.0.1', port=6633 )

    print "*** Creating links"

    Link(h1, h2, intfName1='h1-eth0')

    Link(h1, h3, intfName1='h1-eth1')

    Link(h1, h4, intfName1='h1-eth2')

    Link(h1, h5, intfName1='h1-eth3')

    Link(h1, h6, intfName1='h1-eth4', intfName2='h6-eth0')    

    net.build()

    h1.cmd("sudo ifconfig h1-eth0 0")

    h1.cmd("sudo ifconfig h1-eth1 0")

    h1.cmd("sudo ifconfig h1-eth2 0")

    h1.cmd("sudo ifconfig h1-eth3 0")

    h1.cmd("sudo ifconfig h1-eth4 0")

    h1.cmd("sudo brctl addbr brvlan10")

    h1.cmd("sudo brctl addif brvlan10 h1-eth0")

    h1.cmd("sudo brctl addif brvlan10 h1-eth1")

    h1.cmd("sudo brctl addbr brvlan20")

    h1.cmd("sudo brctl addif brvlan20 h1-eth2")

    h1.cmd("sudo brctl addif brvlan20 h1-eth3")

    h1.cmd("sudo vconfig add h1-eth4 10")

    h1.cmd("sudo vconfig add h1-eth4 20")

    h1.cmd("sudo brctl addif brvlan10 h1-eth4.10")

    h1.cmd("sudo brctl addif brvlan20 h1-eth4.20")

    h1.cmd("sudo ifconfig h1-eth4.10 up")

    h1.cmd("sudo ifconfig h1-eth4.20 up")

    h1.cmd("sudo ifconfig brvlan10 up")

    h1.cmd("sudo ifconfig brvlan20 up")

    h6.cmd("sudo vconfig add h6-eth0 10")

    h6.cmd("sudo vconfig add h6-eth0 20")

    h6.cmd("sudo ifconfig h6-eth0.10 192.168.10.254 netmassk 255.255.255.0 up")

    h6.cmd("sudo ifconfig h6-eth0.20 192.168.20.254 netmassk 255.255.255.0 up")

    h6.cmd("sudo echo 1 > /proc/sys/net/ipv4/ip_forward")

    h2.cmd("sudo ip route add 192.168.20.0/24 via 192.168.10.254 dev h2-eth0")

    h3.cmd("sudo ip route add 192.168.20.0/24 via 192.168.10.254 dev h3-eth0")

    h4.cmd("sudo ip route add 192.168.10.0/24 via 192.168.20.254 dev h4-eth0")

    h5.cmd("sudo ip route add 192.168.10.0/24 via 192.168.20.254 dev h5-eth0")

    c7.start()

    print "*** Running CLI"

    CLI( net )

    print "*** Stopping network"

    net.stop()

if __name__ == '__main__':

    setLogLevel( 'info' )

    topology()