安装floodlight
打开网页localhost:8080/ui/pages/index.html
生成拓扑并连接控制器floodlight,利用控制器floodlight查看图形拓扑
#!/usr/bin/python
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 ):
"Simple topology example."
def __init__( self ):
"Create custom topo."
# Initialize topology
Topo.__init__( self )
#add hosts
host1 = self.addHost('h1')
host2 = self.addHost('h2')
host3 = self.addHost('h3')
#add switch
switch1 = self.addSwitch('s1')
switch2 = self.addSwitch('s2')
switch3 = self.addSwitch('s3')
switch4 = self.addSwitch('s4')
#add link
self.addLink(host1,switch2,1,1)
self.addLink(host2,switch3,1,1)
self.addLink(host3,switch4,1,1)
self.addLink(switch1,switch2,1,2)
self.addLink(switch1,switch3,2,2)
self.addLink(switch1,switch4,3,2)
topos = { 'mytopo': ( lambda: MyTopo() ) }
结果:
利用字符界面下发流表,使得‘h1’和‘h2’ ping 不通
利用字符界面下发流表,通过测试‘h1’和‘h3’的联通性,来验证openflow的hardtime机制
初始连通性:
下发具有hardtime的流表:
测试结果: