SDN第一次上机作业

SDN第一次上机作业

1.安装mininet

安装完成

2.用字符命令生成拓扑，并测试连通性，截图

3.用可视化界面生成拓扑，并测试连通性，截图

4.用Python脚本生成一个Fat-tree型的拓扑，截图

from mininet.topo import Topo
from mininet.net import Mininet
from mininet.node import RemoteController,CPULimitedHost
from mininet.link import TCLink
from mininet.util import dumpNodeConnections

class MyTopo( Topo ):
    def _init_( self ):
        "Create custom topo."
    Topo._init_( self )
    L1 = 2
    L2 = L1 * 2
    L3 = L2
    c = []
    a = []
    e = []

    for i in range( L1 ):
        sw = self.addSwitch( 'c{}'.format( i + 1 ) )
        c.append( sw )

    for i in range( L2 ):
        sw = self.addSwitch( 'a{}'.format( L1 + i + 1 ) )
        a.append( sw )

    for i in range( L3 ):
        sw = selft.addSwitch( 'e{}'.format( Li + L2 + i + 1 ) )
        e.append( sw )

    for i in range( L1 ):
        sw1 = c[i]
        for sw2 in a[i/2::L1/2]:
            self.addLink( sw2, sw1 )

    for i in range( 0, L2, 2 ):
        for sw1 in a[i:i+2]:
            for sw2 in edge[i:i+2]:
                self.addLink( sw2, sw1 )

    count = 1
    for sw1 in edge:
        for i in range(2):
            host = self.addHost( 'h()'.format( count ) )
            self.addLink( sw1, host )
            count = count + 1


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

floodlight安装过程中出现很多问题，没有成功生成。