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mininet / examples / controllers.py @ db134f36

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#!/usr/bin/python
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"""
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Create a network where different switches are connected to
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different controllers, by creating a custom Switch() subclass.
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"""
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from mininet.net import Mininet
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from mininet.node import OVSSwitch, Controller, RemoteController
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from mininet.topolib import TreeTopo
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from mininet.log import setLogLevel
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from mininet.cli import CLI
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setLogLevel( 'info' )
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# Two local and one "external" controller (which is actually c0)
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# Ignore the warning message that the remote isn't (yet) running
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c0 = Controller( 'c0', port=6633 )
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c1 = Controller( 'c1', port=6634 )
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c2 = RemoteController( 'c2', ip='127.0.0.1', port=6633 )
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cmap = { 's1': c0, 's2': c1, 's3': c2 }
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class MultiSwitch( OVSSwitch ):
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    "Custom Switch() subclass that connects to different controllers"
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    def start( self, controllers ):
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        return OVSSwitch.start( self, [ cmap[ self.name ] ] )
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topo = TreeTopo( depth=2, fanout=2 )
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net = Mininet( topo=topo, switch=MultiSwitch, build=False )
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for c in [ c0, c1 ]:
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    net.addController(c)
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net.build()
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net.start()
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CLI( net )
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net.stop()