topo

topo.py

from mininet.topo import Topo

class MyTopo( Topo ):
    "Simple topology example."

    def __init__( self ):
        "Create custom topo."

        # Initialize topology
        Topo.__init__( self )

        # Add hosts and switches
        h1= self.addHost( 'h1' )
        h2 = self.addHost( 'h2' )
        h3 = self.addHost( 'h3' )
        s1 = self.addSwitch( 's1' )

        # Add links
        self.addLink(h1, s1)
  self.addLink(h2, s1)
  self.addLink(h3, s1)


topos = { 'mytopo': ( lambda: MyTopo() ) }