SDN第二次上機作業

（一）基礎

任務一

任務二

任務三

任務四

（二）進階

from mininet.topo import Topo
from mininet.net import Mininet
from mininet.node import CPULimitedHost, RemoteController, Controller
from mininet.node import OVSKernelSwitch, UserSwitch, Node, Host
from mininet.log import setLogLevel
from mininet.link import TCLink
from mininet.cli import CLI
import os
 
class MyTopo(Topo):
	def __init__(self):
		Topo.__init__(self)
		s1 = self.addSwitch('s1', cls=OVSKernelSwitch)
		s2 = self.addSwitch('s2', cls=OVSKernelSwitch)
		h1 = self.addHost('h1', cls=Host, ip='192.168.123.1')
		h2 = self.addHost('h2', cls=Host, ip='192.168.123.2')
		h3 = self.addHost('h3', cls=Host, ip='192.168.123.3')
		h4 = self.addHost('h4', cls=Host, ip='192.168.123.4')
		self.addLink(s1,h1)
		self.addLink(s1,h2)
		self.addLink(s2,h3)
		self.addLink(s2,h4)
		self.addLink(s1,s2)
		os.system('ovs-ofctl -O OpenFlow13 add-flow s1 priority=1,in_port=1,actions=push_vlan:0x8100,set_field:4096-\>vlan_vid,output:3')
		os.system('ovs-ofctl -O OpenFlow13 add-flow s2 priority=1,in_port=1,actions=push_vlan:0x8100,set_field:4096-\>vlan_vid,output:3')
		os.system('ovs-ofctl -O OpenFlow13 add-flow s1 priority=1,in_port=2,actions=push_vlan:0x8100,set_field:4097-\>vlan_vid,output:3')
		os.system('ovs-ofctl -O OpenFlow13 add-flow s2 priority=1,in_port=2,actions=push_vlan:0x8100,set_field:4097-\>vlan_vid,output:3')
		os.system('ovs-ofctl -O OpenFlow13 add-flow s1 priority=1,dl_vlan=0,actions=pop_vlan,output:1')
		os.system('ovs-ofctl -O OpenFlow13 add-flow s2 priority=1,dl_vlan=0,actions=pop_vlan,output:1')
		os.system('ovs-ofctl -O OpenFlow13 add-flow s1 priority=1,dl_vlan=1,actions=pop_vlan,output:2')
		os.system('ovs-ofctl -O OpenFlow13 add-flow s2 priority=1,dl_vlan=1,actions=pop_vlan,output:2')
		os.system('ovs-vsctl show')
def simpleTest():
	topo=MyTopo()
	net = Mininet(topo,host=CPULimitedHost,link=TCLink)
	net.start()
	CLI(net)
	net.stop()
if __name__=='__main__':
	setLogLevel('info')
	Mininet.init()
	simpleTest()
           

個人總結：