Bob Lantz
77131e8f24
Unfortunately, I can't test this at the moment since nox seems not to be able to find the routing module. Added/renamed examples: grid.py, tree1024.py Added -v flag to nox arguments, so we have some chance of figuring out why nox is dying, as it generally is.
62 lines
2.1 KiB
Python
Executable File
62 lines
2.1 KiB
Python
Executable File
#!/usr/bin/python
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"A FatTree network, using Brandon Heller's ripcord system."
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import ripcord
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from ripcord.topo import FatTreeTopo
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from mininet import init, Controller, Network, Host, nameGen, Cli
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from mininet import createLink, flush
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class NoxController( Controller ):
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def __init__( self, name, kernel=False **kwargs ):
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Controller.__init__( self, name, kernel=kernel,
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controller='nox_core',
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cargs='-v --libdir=/usr/local/lib -i ptcp: routing',
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cdir='/usr/local/bin', **kwargs)
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class FatTree( Network ):
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"A customized Network that uses ripcord's FatTree."
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def __init__( self, depth, **kwargs ):
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self.depth = depth
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Network.__init__( self, **kwargs )
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def makeNet( self, controller ):
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ft = FatTreeTopo( self.depth )
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graph = ft.g
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switches = []
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hosts = []
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hostnames = nameGen( 'h' )
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switchnames = nameGen( 's' )
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dpnames = nameGen( 'nl:')
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graphToMini = {}
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miniToGraph = {}
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# Create nodes
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for graphNode in graph.nodes():
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isLeaf = len( graph.neighbors( graphNode ) ) == 1
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if isLeaf:
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mininetNode = Host( hostnames.next() )
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hosts += [ mininetNode ]
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else:
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mininetNode = self.Switch( switchnames.next(), dpnames.next() )
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switches += [ mininetNode ]
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print mininetNode.name, ; flush()
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miniToGraph[ mininetNode ] = graphNode
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graphToMini[ graphNode ] = mininetNode
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print
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print "*** Creating links"
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for switch in switches:
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currentNeighbors = [ switch.connection[ intf ][ 0 ]
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for intf in switch.intfs ]
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for neighbor in graph.neighbors( miniToGraph[ switch ] ):
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miniNeighbor = graphToMini[ neighbor ]
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if miniNeighbor not in currentNeighbors:
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print ".", ; flush()
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createLink( switch, graphToMini[ neighbor ] )
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print
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return switches, hosts
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if __name__ == '__main__':
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init()
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network = FatTree( depth=4, kernel=True, Controller=NoxController)
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network.run( Cli )
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