Brian O'Connor
50 lines
1.4 KiB
Python
Executable File
50 lines
1.4 KiB
Python
Executable File
#!/usr/bin/python
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"""
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linuxrouter.py: Example network with Linux IP router
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"""
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from mininet.topo import Topo
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from mininet.net import Mininet
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from mininet.node import Node
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from mininet.log import setLogLevel
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from mininet.cli import CLI
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from mininet.util import irange
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class Router( Node ):
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def config( self, **params ):
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super( Router, self).config( **params )
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# Enable forwarding on the router
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self.cmd( 'sysctl net.ipv4.ip_forward=1' )
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def terminate( self ):
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self.cmd( 'sysctl net.ipv4.ip_forward=0' )
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super( Router, self ).terminate()
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class NetworkTopo(Topo):
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def __init__(self, n=2, h=1, **opts):
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Topo.__init__(self, **opts)
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router = self.addNode('r0', cls=Router, ip='192.168.1.1/24')
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h1 = self.addHost('h1', ip='192.168.1.100/8', defaultRoute='via 192.168.1.1')
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h2 = self.addHost('h2', ip='172.16.0.100/8', defaultRoute='via 172.16.0.1')
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h3 = self.addHost('h3', ip='10.0.0.100/24', defaultRoute='via 10.0.0.1')
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self.addLink(h1, router, intfName2='r0-eth1', params2={ 'ip' : '192.168.1.1/24' })
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self.addLink(h2, router, intfName2='r0-eth2', params2={ 'ip' : '172.16.0.1/24' })
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self.addLink(h3, router, intfName2='r0-eth3', params2={ 'ip' : '10.0.0.1/24' })
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def run():
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topo = NetworkTopo()
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net = Mininet(topo=topo)
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net.start()
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CLI(net)
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net.stop()
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if __name__ == '__main__':
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setLogLevel('info')
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run()
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