mobile_ip_wifi.py

from mininet.log import setLogLevel, info
from mininet.net import Mininet
from mininet.cli import CLI

from mininet.opennet import Pcap
from mininet import ns3

import ns.wifi

def mobile_ip_topo():
    
    " Setting wired network "
    net = Mininet(controller = None)

    " Switches "
    s1 = net.addSwitch( 's1' )
    s2 = net.addSwitch( 's2' )
    s3 = net.addSwitch( 's3' )

    " Hosts "
    router = net.addHost( 'router', ip='192.168.1.1/24' )
    ha = net.addHost( 'ha', ip='192.168.1.2/24' )
    mn = net.addHost( 'mn', ip='192.168.1.3/24' )
    cn = net.addHost( 'cn', ip='192.168.3.2/24' )

    " Links "
    net.addLink( s1, router )
    net.addLink( s1, ha )
    net.addLink( s2, router )
    net.addLink( s3, router )
    net.addLink( s3, cn )
    
    " Setting mobility model "
    mobilityHelper = ns3.createMobilityHelper( "ns3::ConstantPositionMobilityModel" )
    ns3.setMobilityModel( s1, mobilityHelper )
    ns3.setMobilityModel( s2, mobilityHelper )
    ns3.setMobilityModel( s3, mobilityHelper )
    ns3.setMobilityModel( router, mobilityHelper )
    ns3.setMobilityModel( ha, mobilityHelper )
    ns3.setMobilityModel( mn, mobilityHelper )
    ns3.setMobilityModel( cn, mobilityHelper )

    " Setting position "
    ns3.setPosition( s1, -25.0, -25.0, 0.0 )
    ns3.setPosition( s2, 150.0, -25.0, 0.0 )
    ns3.setPosition( s3, 0.0, 25.0, 0.0 )
    ns3.setPosition( router, 0.0, 0.0, 0.0 )
    ns3.setPosition( ha, -25.0, -50.0, 0.0 )
    ns3.setPosition( mn, -50.0, -50.0, 0.0 )
    ns3.setPosition( cn, 25.0, 25.0, 0.0 )

    " Setting wireless network "
    wifi = ns3.WifiSegment( standard=ns.wifi.WIFI_PHY_STANDARD_80211g )

    wifi.addAp( node=s1, channelNumber=1 )
    wifi.addAp( node=s2, channelNumber=1 )
    wifi.addSta( node=mn, channelNumber=1 )

    " Enable packet trace, pcap files can be find in /tmp/pcap "
    pcap = Pcap()
    pcap.enable()

    " Start the simulation "
    net.start()
    ns3.start()

    " Setting switches "
    s1.cmdPrint( 'ovs-vsctl set-fail-mode s1 standalone' )
    s2.cmdPrint( 'ovs-vsctl set-fail-mode s2 standalone' )
    s3.cmdPrint( 'ovs-vsctl set-fail-mode s3 standalone' )

    " Setting router "
    router.cmdPrint( 'ip addr add dev router-eth1 192.168.2.1/24' )
    router.cmdPrint( 'ip addr add dev router-eth2 192.168.3.1/24' )
    router.cmdPrint( 'sysctl -w net.ipv4.ip_forward=1' )

    " Setting route on hosts "
    ha.cmdPrint( 'ip route add default via 192.168.1.1' )
    mn.cmdPrint( 'ip route add default via 192.168.1.1' )
    cn.cmdPrint( 'ip route add default via 192.168.3.1' )

    CLI( net )

    ns3.stop()
    ns3.clear()
    net.stop()

if __name__ == '__main__':
    setLogLevel( 'info' )
    mobile_ip_topo()