Bob Lantz
9dbb68df9e
Not sure if I want nox_core -v in nox.py - it's useful for debugging. ripcordtest.py (and grid.py) still depend on routing, which I haven't been able to test yet.
62 lines
2.1 KiB
Python
Executable File
62 lines
2.1 KiB
Python
Executable File
#!/usr/bin/python
|
|
|
|
"A FatTree network, using Brandon Heller's ripcord system."
|
|
|
|
import ripcord
|
|
from ripcord.topo import FatTreeTopo
|
|
|
|
from mininet import init, Controller, Network, Host, nameGen, Cli
|
|
from mininet import createLink, flush
|
|
|
|
class NoxController( Controller ):
|
|
def __init__( self, name, kernel=False **kwargs ):
|
|
Controller.__init__( self, name, kernel=kernel,
|
|
controller='nox_core',
|
|
cargs='-v --libdir=/usr/local/lib -i ptcp: routing',
|
|
cdir='/usr/local/bin', **kwargs)
|
|
|
|
class FatTree( Network ):
|
|
"A customized Network that uses ripcord's FatTree."
|
|
def __init__( self, depth, **kwargs ):
|
|
self.depth = depth
|
|
Network.__init__( self, **kwargs )
|
|
def makeNet( self, controller ):
|
|
ft = FatTreeTopo( self.depth )
|
|
graph = ft.g
|
|
switches = []
|
|
hosts = []
|
|
hostnames = nameGen( 'h' )
|
|
switchnames = nameGen( 's' )
|
|
dpnames = nameGen( 'nl:')
|
|
graphToMini = {}
|
|
miniToGraph = {}
|
|
# Create nodes
|
|
for graphNode in graph.nodes():
|
|
isLeaf = len( graph.neighbors( graphNode ) ) == 1
|
|
if isLeaf:
|
|
mininetNode = Host( hostnames.next() )
|
|
hosts += [ mininetNode ]
|
|
else:
|
|
mininetNode = self.Switch( switchnames.next(), dpnames.next() )
|
|
switches += [ mininetNode ]
|
|
print mininetNode.name, ; flush()
|
|
miniToGraph[ mininetNode ] = graphNode
|
|
graphToMini[ graphNode ] = mininetNode
|
|
print
|
|
print "*** Creating links"
|
|
for switch in switches:
|
|
currentNeighbors = [ switch.connection[ intf ][ 0 ]
|
|
for intf in switch.intfs ]
|
|
for neighbor in graph.neighbors( miniToGraph[ switch ] ):
|
|
miniNeighbor = graphToMini[ neighbor ]
|
|
if miniNeighbor not in currentNeighbors:
|
|
print '.', ; flush()
|
|
createLink( switch, graphToMini[ neighbor ] )
|
|
print
|
|
return switches, hosts
|
|
|
|
if __name__ == '__main__':
|
|
init()
|
|
network = FatTree( depth=4, kernel=True, Controller=NoxController)
|
|
network.run( Cli )
|