SDN第三次上机作业

1.创建以下拓扑（可采用任意方式）

#!/user/bin/python

from mininet.topo import Topo

class topo1(Topo):

        def __init__(self):
                Topo.__init__(self)

                s1 = self.addSwitch('s1')
                s2 = self.addSwitch('s2')

                h1 = self.addHost('h1')
                h2 = self.addHost('h2')
                h3 = self.addHost('h3')
                h4 = self.addHost('h4')
                h5 = self.addHost('h5')
                h6 = self.addHost('h6')

                self.addLink(h1, s1)
                self.addLink(h2, s1)
                self.addLink(h3, s1)
				
				self.addLink(h4, s2)
                self.addLink(h5, s2)
                self.addLink(h6, s2)

                self.addLink(s1, s2)

topos = {"topo1": (lambda: topo1())}