20210419 期中週

課堂資料

MIniedit

課堂練習

MiniEdit 01

cd mininet-wifi/
cd examples/
python miniedit.py

cd ..
cd ..
cd test-miniedit/
gedit 1.py

python 1.py

h1 ping h2 -c 5

1.py

#!/usr/bin/python

from mininet.net import Mininet
from mininet.node import Host, OVSKernelSwitch
from mininet.cli import CLI
from mininet.link import TCLink, Intf
from mininet.log import setLogLevel, info
from subprocess import call


def myNetwork():

    net = Mininet(topo=None,
                       build=False,
                       ipBase='10.0.0.0/8')

    info( '*** Adding controller\n' )
    info( '*** Add switches/APs\n')
    s1  = net.addSwitch('s1', cls=OVSKernelSwitch, failMode='standalone')

    info( '*** Add hosts/stations\n')
    h1 = net.addHost('h1', cls=Host, ip='10.0.0.1', defaultRoute=None)
    h3 = net.addHost('h3', cls=Host, ip='10.0.0.3', defaultRoute=None)
    h2 = net.addHost('h2', cls=Host, ip='10.0.0.2', defaultRoute=None)

    info( '*** Add links\n')
    net.addLink(h1, s1)
    net.addLink(h2, s1)
    net.addLink(h3, s1)

    info( '*** Starting network\n')
    net.build()
    info( '*** Starting controllers\n')
    for controller in net.controllers:
        controller.start()

    info( '*** Starting switches/APs\n')
    net.get('s1').start([])

    info( '*** Post configure nodes\n')

    CLI(net)
    net.stop()


if __name__ == '__main__':
    setLogLevel( 'info' )
    myNetwork()

cd ..

MiniEdit 02

cd mininet-wifi/
cd examples/
python miniedit.py

cd ..
cd ..
cd test-miniedit/
gedit 2.py

python 2.py

pingall -c 5

2.py

#!/usr/bin/python

from mininet.net import Mininet
from mininet.node import Host, Node, OVSKernelSwitch
from mininet.cli import CLI
from mininet.link import TCLink, Intf
from mininet.log import setLogLevel, info
from subprocess import call


def myNetwork():

net = Mininet(topo=None, build=False, ipBase='10.0.0.0/8')

info( '*** Adding controller\n' )
info( '*** Add switches/APs\n')
r1 = net.addHost('r1', ip='0.0.0.0')
r1.cmd('sysctl -w net.ipv4.ip_forward=1')
s3  = net.addSwitch('s3', cls=OVSKernelSwitch, failMode='standalone')
r2 = net.addHost('r2', ip='0.0.0.0')
r2.cmd('sysctl -w net.ipv4.ip_forward=1')

info( '*** Add hosts/stations\n')
h3 = net.addHost('h3', cls=Host, ip='192.168.20.2/24', defaultRoute='via 192.168.20.254')
h1 = net.addHost('h1', cls=Host, ip='192.168.10.1/24', defaultRoute='via 192.168.10.254')
h2 = net.addHost('h2', cls=Host, ip='192.168.20.1/24', defaultRoute='via 192.168.20.254')

info( '*** Add links\n')
net.addLink(s3, h3)
net.addLink(h1, r1)
net.addLink(r1, r2)
net.addLink(r2, s3)
net.addLink(h2, s3)

info( '*** Starting network\n')
net.build()
info( '*** Starting controllers\n')
for controller in net.controllers:
    controller.start()

info( '*** Starting switches/APs\n')
net.get('s3').start([])

info( '*** Post configure nodes\n')
r1.cmd("ifconfig r1-eth0 0")
r1.cmd("ifconfig r1-eth1 0")
r1.cmd("ifconfig r1-eth0 192.168.10.254/24")
r1.cmd("ifconfig r1-eth1 10.0.0.1/24")
r1.cmd("ip route add 192.168.20.0/24 via 10.0.0.2")
r2.cmd("ifconfig r2-eth0 0")
r2.cmd("ifconfig r2-eth1 0")
r2.cmd("ifconfig r2-eth0 10.0.0.2/24")
r2.cmd("ifconfig r2-eth1 192.168.20.254/24")
r2.cmd("ip route add 192.168.10.0/24 via 10.0.0.1")
CLI(net)
net.stop()


if __name__ == '__main__':
setLogLevel( 'info' )
myNetwork()

cd ..

MiniEdit 03

cd mininet-wifi/
cd examples/
python miniedit.py

cd ..
cd ..
cd test-miniedit/
gedit 3.py

python 3.py

h1 ping h2 -c 5

3.py

!/usr/bin/python
from mininet.net import Mininet from mininet.node import Controller, OVSKernelSwitch, Host from mininet.cli import CLI from mininet.link import TCLink, Intf from mininet.log import setLogLevel, info from subprocess import call
def myNetwork():
net = Mininet(topo=None,
                   build=False,
                   ipBase='10.0.0.0/8')

info( '*** Adding controller\n' )
c0 = net.addController(name='c0',
                       controller=Controller,
                       protocol='tcp',
                       port=6633)

info( '*** Add switches/APs\n')
s2 = net.addSwitch('s2', cls=OVSKernelSwitch)
s1 = net.addSwitch('s1', cls=OVSKernelSwitch)

info( '*** Add hosts/stations\n')
h1 = net.addHost('h1', cls=Host, ip='10.0.0.1', defaultRoute=None)
h2 = net.addHost('h2', cls=Host, ip='10.0.0.2', defaultRoute=None)

info( '*** Add links\n')
net.addLink(s2, h2)
net.addLink(s1, h1)
net.addLink(s1, s2)

info( '*** Starting network\n')
net.build()
info( '*** Starting controllers\n')
for controller in net.controllers:
    controller.start()

info( '*** Starting switches/APs\n')
net.get('s2').start([c0])
net.get('s1').start([c0])

info( '*** Post configure nodes\n')

CLI(net)
net.stop()
if name == 'main': setLogLevel( 'info' ) myNetwork()

h1 ping h2 -c 5 之前

ovs-ofctl dump-flows s1

ovs-ofctl dump-flows s2

h1 ping h2 -c 5 之後

ovs-ofctl dump-flows s1

ovs-ofctl dump-flows s2

cd ..

MiniEdit 03-1

cd mininet-wifi/
cd examples/
python miniedit.py

cd ..
cd ..
cd test-miniedit/
gedit 3-1.py

python 3-1.py

h1 ping h2 -c 5

載入模組後重新h1 ping h2

h1 ping h2 -c 5

3-1.py

#!/usr/bin/python

from mininet.net import Mininet
from mininet.node import RemoteController, OVSKernelSwitch, Host
from mininet.cli import CLI
from mininet.link import TCLink, Intf
from mininet.log import setLogLevel, info
from subprocess import call


def myNetwork():

    net = Mininet(topo=None,
                       build=False,
                       ipBase='10.0.0.0/8')

    info( '*** Adding controller\n' )
    c0 = net.addController(name='c0',
                           controller=RemoteController,
                           ip='127.0.0.1',
                           protocol='tcp',
                           port=6633)

    info( '*** Add switches/APs\n')
    s1 = net.addSwitch('s1', cls=OVSKernelSwitch)
    s2 = net.addSwitch('s2', cls=OVSKernelSwitch)

    info( '*** Add hosts/stations\n')
    h2 = net.addHost('h2', cls=Host, ip='10.0.0.2', defaultRoute=None)
    h1 = net.addHost('h1', cls=Host, ip='10.0.0.1', defaultRoute=None)

    info( '*** Add links\n')
    net.addLink(s2, s1)
    net.addLink(s1, h1)
    net.addLink(s2, h2)

    info( '*** Starting network\n')
    net.build()
    info( '*** Starting controllers\n')
    for controller in net.controllers:
        controller.start()

    info( '*** Starting switches/APs\n')
    net.get('s1').start([c0])
    net.get('s2').start([c0])

    info( '*** Post configure nodes\n')

    CLI(net)
    net.stop()


if __name__ == '__main__':
    setLogLevel( 'info' )
    myNetwork()

h1 ping h2 會失敗，因為是 remote controller，切換到/home/user/ryu/ryu/app下，將提供的模組載入，再重新h1 ping h2

cd ryu/ryu/app

ryu-manager simple_switch.py

重新h1 ping h2 之後

ovs-ofctl dump-flows s1

ovs-ofctl dump-flows s2

期中題目

mkdir exam

cd exam

gedit switch.py

switch.py

#!/usr/bin/env python
from mininet.cli import CLI
from mininet.net import Mininet
from mininet.link import Link,TCLink,Intf
from mininet.node import Controller,RemoteController
 
if '__main__' == __name__:
  net = Mininet(link=TCLink)
  h1 = net.addHost('h1', ip="192.168.10.1")
  h2 = net.addHost('h2', ip="192.168.20.1")
  s1 = net.addSwitch('s1')
  s2 = net.addSwitch('s2')
  s3 = net.addSwitch('s3')
  s4 = net.addSwitch('s4')
  c0 = net.addController('c0', controller=RemoteController)
  net.addLink(h1, s1)
  net.addLink(s1, s2)
  net.addLink(s1, s3)
  net.addLink(s2, s4)
  net.addLink(s3, s4)
  net.addLink(s4, h2)
  net.build()
  c0.start()
  s1.start([c0])
  s2.start([c0])
  s3.start([c0])
  s4.start([c0])
  # rules for s1
  # h1 ping h2
  s1.cmd("ovs-ofctl add-flow s1 arp,arp_op=1,arp_spa=192.168.10.1,arp_tpa=192.168.20.1,actions=output:2")
  s1.cmd("ovs-ofctl add-flow s1 arp,arp_op=1,arp_spa=192.168.20.1,arp_tpa=192.168.10.1,actions=output:1")
  s1.cmd("ovs-ofctl add-flow s1 arp,arp_op=2,arp_spa=192.168.10.1,arp_tpa=192.168.20.1,actions=output:2")
  s1.cmd("ovs-ofctl add-flow s1 arp,arp_op=2,arp_spa=192.168.20.1,arp_tpa=192.168.10.1,actions=output:1")
  s1.cmd("ovs-ofctl add-flow s1 icmp,nw_src=192.168.10.1,nw_dst=192.168.20.1,icmp_type=8,icmp_code=0,actions=output:2")
  s1.cmd("ovs-ofctl add-flow s1 icmp,nw_src=192.168.20.1,nw_dst=192.168.10.1,icmp_type=0,icmp_code=0,actions=output:1")
  s1.cmd("ovs-ofctl add-flow s1 icmp,nw_src=192.168.20.1,nw_dst=192.168.10.1,icmp_type=8,icmp_code=0,actions=output:1")
  s1.cmd("ovs-ofctl add-flow s1 icmp,nw_src=192.168.10.1,nw_dst=192.168.20.1,icmp_type=0,icmp_code=0,actions=output:3")

  # rules for s2
  # h1 ping h2
  s2.cmd("ovs-ofctl add-flow s2 arp,arp_op=1,arp_spa=192.168.10.1,arp_tpa=192.168.20.1,actions=output:2")
  s2.cmd("ovs-ofctl add-flow s2 arp,arp_op=1,arp_spa=192.168.20.1,arp_tpa=192.168.10.1,actions=output:1")
  s2.cmd("ovs-ofctl add-flow s2 arp,arp_op=2,arp_spa=192.168.10.1,arp_tpa=192.168.20.1,actions=output:2")
  s2.cmd("ovs-ofctl add-flow s2 arp,arp_op=2,arp_spa=192.168.20.1,arp_tpa=192.168.10.1,actions=output:1")
  s2.cmd("ovs-ofctl add-flow s2 icmp,nw_src=192.168.10.1,nw_dst=192.168.20.1,icmp_type=8,icmp_code=0,actions=output:2")
  s2.cmd("ovs-ofctl add-flow s2 icmp,nw_src=192.168.20.1,nw_dst=192.168.10.1,icmp_type=8,icmp_code=0,actions=output:1")

  # rules for s3
  s3.cmd("ovs-ofctl add-flow s3 icmp,nw_src=192.168.10.1,nw_dst=192.168.20.1,icmp_type=0,icmp_code=0,actions=output:2")
  s3.cmd("ovs-ofctl add-flow s3 icmp,nw_src=192.168.20.1,nw_dst=192.168.10.1,icmp_type=0,icmp_code=0,actions=output:1")

  # rules for s4
  s4.cmd("ovs-ofctl add-flow s4 arp,arp_op=1,arp_spa=192.168.10.1,arp_tpa=192.168.20.1,actions=output:3")
  s4.cmd("ovs-ofctl add-flow s4 arp,arp_op=1,arp_spa=192.168.20.1,arp_tpa=192.168.10.1,actions=output:1")
  s4.cmd("ovs-ofctl add-flow s4 arp,arp_op=2,arp_spa=192.168.10.1,arp_tpa=192.168.20.1,actions=output:3")
  s4.cmd("ovs-ofctl add-flow s4 arp,arp_op=2,arp_spa=192.168.20.1,arp_tpa=192.168.10.1,actions=output:1")
  s4.cmd("ovs-ofctl add-flow s4 icmp,nw_src=192.168.10.1,nw_dst=192.168.20.1,icmp_type=8,icmp_code=0,actions=output:3")
  s4.cmd("ovs-ofctl add-flow s4 icmp,nw_src=192.168.20.1,nw_dst=192.168.10.1,icmp_type=0,icmp_code=0,actions=output:2")
  s4.cmd("ovs-ofctl add-flow s4 icmp,nw_src=192.168.20.1,nw_dst=192.168.10.1,icmp_type=8,icmp_code=0,actions=output:1")
  s4.cmd("ovs-ofctl add-flow s4 icmp,nw_src=192.168.10.1,nw_dst=192.168.20.1,icmp_type=0,icmp_code=0,actions=output:3")


  CLI(net)
  net.stop()

Previous20210412 Openvswitch ( 一 )Next20210426 Group Table

Last updated 4 years ago

Was this helpful?