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-rwxr-xr-xframework/src/onos/tools/test/topos/fractal.py56
1 files changed, 56 insertions, 0 deletions
diff --git a/framework/src/onos/tools/test/topos/fractal.py b/framework/src/onos/tools/test/topos/fractal.py
new file mode 100755
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--- /dev/null
+++ b/framework/src/onos/tools/test/topos/fractal.py
@@ -0,0 +1,56 @@
+#!/usr/bin/env python
+
+from mininet.topo import Topo
+
+class FractalTopo( Topo ):
+ def build( self, n=3, h=2 ):
+
+ clusters = []
+ for i in range( 1, n+1 ):
+ clusterSws = []
+ # create switches in cluster
+ for j in range( 1, n+1 ):
+ id = i * 1000 + j
+ sw = self.addSwitch('s%d' % id, dpid=str(id).zfill(16))
+ [ self.addLink(s, sw) for s in clusterSws ]
+ clusterSws.append(sw)
+ clusters.append(clusterSws)
+
+ for i in range( 1, n+1 ):
+ # create the edge switch
+ id = i * 10000
+ sw = self.addSwitch('s%d' % id, dpid=str(id).zfill(16))
+ self.addLink(clusters[i-1].pop(0), sw)
+ for j in range( 1, h+1 ):
+ id = i * 1000 + j
+ host = self.addHost( 'h%d' % id )
+ self.addLink( host, sw )
+
+ for i in range( 1, n+1 ):
+ # connect the clusters
+ if i == n:
+ id = n * 1000000 + 10000
+ sw = self.addSwitch('s%d' % id, dpid=str(id).zfill(16))
+ self.addLink(clusters[i-1].pop(0), sw)
+ self.addLink(clusters[0].pop(0), sw)
+
+ else:
+ id = (i+1) * 1000000 + i * 10000
+ sw = self.addSwitch('s%d' % id, dpid=str(id).zfill(16))
+ self.addLink(clusters[i-1].pop(0), sw)
+ self.addLink(clusters[i].pop(0), sw)
+
+
+topos = { 'fractal': FractalTopo }
+
+def run():
+ topo = FractalTopo()
+ net = Mininet( topo=topo, controller=RemoteController, autoSetMacs=True )
+ net.start()
+ CLI( net )
+ net.stop()
+
+if __name__ == '__main__':
+ setLogLevel( 'info' )
+ run()
+