lantz
f0c726a42f
This helps with virtualenv although it can open up another security hole if you end up using an unexpected python interpreter. Overall it seems to make sense to err on the side of usability but it's good to be aware of security. However, for the remaining utility scripts that require python 2, we explicitly note this with #!/usr/bin/python2.
65 lines
1.7 KiB
Python
Executable File
65 lines
1.7 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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This example creates a multi-controller network from semi-scratch by
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using the net.add*() API and manually starting the switches and controllers.
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This is the "mid-level" API, which is an alternative to the "high-level"
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Topo() API which supports parametrized topology classes.
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Note that one could also create a custom switch class and pass it into
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the Mininet() constructor.
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"""
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from mininet.net import Mininet
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from mininet.node import Controller, OVSSwitch
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from mininet.cli import CLI
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from mininet.log import setLogLevel, info
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def multiControllerNet():
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"Create a network from semi-scratch with multiple controllers."
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net = Mininet( controller=Controller, switch=OVSSwitch,
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waitConnected=True )
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info( "*** Creating (reference) controllers\n" )
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c1 = net.addController( 'c1', port=6633 )
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c2 = net.addController( 'c2', port=6634 )
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info( "*** Creating switches\n" )
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s1 = net.addSwitch( 's1' )
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s2 = net.addSwitch( 's2' )
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info( "*** Creating hosts\n" )
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hosts1 = [ net.addHost( 'h%d' % n ) for n in ( 3, 4 ) ]
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hosts2 = [ net.addHost( 'h%d' % n ) for n in ( 5, 6 ) ]
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info( "*** Creating links\n" )
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for h in hosts1:
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net.addLink( s1, h )
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for h in hosts2:
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net.addLink( s2, h )
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net.addLink( s1, s2 )
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info( "*** Starting network\n" )
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net.build()
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c1.start()
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c2.start()
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s1.start( [ c1 ] )
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s2.start( [ c2 ] )
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info( "*** Testing network\n" )
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net.pingAll()
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info( "*** Running CLI\n" )
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CLI( net )
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info( "*** Stopping network\n" )
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net.stop()
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if __name__ == '__main__':
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setLogLevel( 'info' ) # for CLI output
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multiControllerNet()
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