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SDN第三次上机作业

1.创建拓扑

拓扑代码

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
        host1 = self.addHost( 'h1' )
        host2 = self.addHost( 'h2' )
        host3 = self.addHost( 'h3' )
        host4 = self.addHost( 'h4' )
        host5 = self.addHost( 'h5' )
        host6 = self.addHost( 'h6' )
        switch1 = self.addSwitch( 's1' )
        switch2 = self.addSwitch( 's2' )

        # Add links
        self.addLink( host1, switch1 )
        self.addLink( host2, switch1 )
        self.addLink( host3, switch1 )
        self.addLink( host4, switch2 )
        self.addLink( host5, switch2 )
        self.addLink( host6, switch2 )
        self.addLink( switch1,switch2 )

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