QuaggaOSPF.py

#!/usr/bin/python

from mininet.topo import Topo
from mininet.net import Mininet
from mininet.node import Node
from mininet.log import setLogLevel, info
from mininet.cli import CLI
import time
import os

class LinuxRouter( Node ):
    "A Node with IP forwarding enabled."

    def config( self, **params ):
        super( LinuxRouter, self).config( **params )
        # Enable forwarding on the router
        self.cmd( 'sysctl net.ipv4.ip_forward=1' )

    def terminate( self ):
        self.cmd( 'sysctl net.ipv4.ip_forward=0' )
        super( LinuxRouter, self ).terminate()


class NetworkTopo( Topo ):
    "A LinuxRouter connecting three IP subnets"

    def build( self, **_opts ):

        defaultIP1 = '10.0.3.10/24'  # IP address for r0-eth1
        defaultIP2 = '10.0.3.20/24' 
        router1 = self.addNode( 'r1', cls=LinuxRouter, ip=defaultIP1 )
	router2 = self.addNode( 'r2', cls=LinuxRouter, ip=defaultIP2 )
	

	
        
        h1 = self.addHost( 'h1', ip='10.0.1.100/24', defaultRoute='via 10.0.1.10') #define gateway
        h2 = self.addHost( 'h2', ip='10.0.2.100/24', defaultRoute='via 10.0.2.20')
#        h3 = self.addHost( 'h3', ip='10.0.3.100/24')

	self.addLink(router1,router2,intfName1='r1-eth1',intfName2='r2-eth1')
	self.addLink(h1,router1,intfName2='r1-eth2',params2={ 'ip' : '10.0.1.10/24' })#params2 define the eth2 ip address
	self.addLink(h2,router2,intfName2='r2-eth2',params2={ 'ip' : '10.0.2.20/24' })

#	self.addLink(h3,router,intfName2='r0-eth3',params2={ 'ip' : '10.0.3.10/24' })
        
	

def run():
    "Test linux router"
    topo = NetworkTopo()
    net = Mininet(controller = None, topo=topo )  # controller is used by s1-s3
    net.start()
    info( '*** Routing Table on Router:\n' )
#    info( net[ 'r1' ].cmd( 'route' ) )

    r1=net.getNodeByName('r1')
    r2=net.getNodeByName('r2')
    info('starting zebra and ospfd service:\n')

#    r1.cmd('zebra -f /usr/local/etc/r1zebra.conf -d -i ~/Desktop/r1zebra > ~/Desktop/r1zebra.log')
#    r2.cmd('zebra -f /usr/local/etc/r2zebra.conf -d -i ~/Desktop/r2zebra > ~/Desktop/r2zebra.log')

    r1.cmd('zebra -f /usr/local/etc/r1zebra.conf -d -z ~/Desktop/r1zebra.api -i ~/Desktop/r1zebra.interface')
    time.sleep(1)#time for zebra to create api socket
#    r1.cmd('ripd -f /usr/local/etc/r1ripd.conf -d -i ~/Desktop/r1ripd > ~/Desktop/r1ripd.log')

    r2.cmd('zebra -f /usr/local/etc/r2zebra.conf -d -z ~/Desktop/r2zebra.api -i ~/Desktop/r2zebra.interface')
    r1.cmd('ospfd -f /usr/local/etc/r1ospfd.conf -d -z ~/Desktop/r1zebra.api -i ~/Desktop/r1ospfd.interface')

#    r2.cmd('ripd -f /usr/local/etc/r2ripd.conf -d -i ~/Desktop/r2ripd > ~/Desktop/r2ripd.log')
    r2.cmd('ospfd -f /usr/local/etc/r2ospfd.conf -d -z ~/Desktop/r2zebra.api -i ~/Desktop/r2ospfd.interface')
    
    
    CLI( net )
    net.stop()
    os.system("killall -9 ospfd zebra")
    os.system("rm -f *api*")
    os.system("rm -f *interface*")

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