20210503 Containernet / Mininet-Wifi ( Miniedit )

課堂資料

mininetDropbox

Containernet ( Dockernet )

http://csie.nqu.edu.tw/smallko/sdn/routing.htmcsie.nqu.edu.tw

Mininet-Wifi ( Miniedit )

進行Mininet-Wifi實驗時，需停下NetworkManager

UsageMininet-WiFi

課堂練習

Containernet ( Dockernet )

Terminal 01

cd containernet

python3 ./setup.py install

docker pull ubuntu:16.04

docker images

apt update

apt upgrade

apt install openssh-server -y

建立兩組使用者密碼及sshd

docker run -it ubuntu:16.04 bash

建立 sshd1

adduser user

建立 sshd2

passwd user

apt update

apt install net-tools

ifconfig

apt install iputils-ping

ping 8.8.8.8

Terminal - d1

docker ps

建立 sshd1

docker commit 9f6 ubuntu:sshd1

docker images

docker rmi 4be

docker ps

docker commit 9f6 ubuntu:sshd1

建立 sshd2

docker commit 9f6 ubuntu:sshd2

docker images

docker ps

啟動 sshd

docker exec -it mn.d1 bash

d1

ifconfig d1-eth0 10.0.0.251/24

ifconfig

apt install openssh-server -y

/etc/init.d/ssh start

netstat -tulnp | grep 22

啟動 sshd

docker exec -it mn.d2 bash

d2

ifconfig d2-eth0 10.0.0.252/24

ifconfig

apt install openssh-server -y

/etc/init.d/ssh start

netstat -tulnp | grep 22

Terminal 02

cd containernet-test

gedit 1.py

python3 1.py

xterm h1

gedit

1.py

#!/usr/bin/python
"""
This is the most simple example to showcase Containernet.
"""
from mininet.net import Containernet
from mininet.node import Controller
from mininet.cli import CLI
from mininet.link import TCLink
from mininet.log import info, setLogLevel
setLogLevel('info')

net = Containernet(controller=Controller)
info('*** Adding controller\n')
net.addController('c0')
info('*** Adding docker containers\n')
h1 = net.addHost('h1', ip='10.0.0.250/24')
d1 = net.addDocker('d1', ip='10.0.0.251/24', dimage="ubuntu:sshd1")
d2 = net.addDocker('d2', ip='10.0.0.252/24', dimage="ubuntu:sshd2")
info('*** Adding switches\n')
s1 = net.addSwitch('s1')
info('*** Creating links\n')
net.addLink(h1, s1)
net.addLink(d1, s1)
net.addLink(d2, s1)
info('*** Starting network\n')
net.start()
info('*** Running CLI\n')
CLI(net)
info('*** Stopping network')
net.stop()

h1

cd ..

cd .ssh/

ls

rm known_hosts

ssh user@10.0.0.251

Containernet ( SSH Tunnel )

實驗一

Terminal 01

cd server-test/test-sshtunnel

gedit 1.py 2.py 3.py 4.py 5.py

python3 1.py

xterm h1

gedit

1.py

#!/usr/bin/python
from mininet.net import Containernet
from mininet.node import Docker
from mininet.cli import CLI
from mininet.log import setLogLevel, info
from mininet.link import TCLink, Link
 
def topology():
 
    "Create a network with some docker containers acting as hosts."
    net = Containernet()
 
    info('*** Adding hosts\n')
    h1 = net.addHost('h1', ip='192.168.0.1/24')
    d1 = net.addDocker('d1', ip='192.168.0.2/24', dimage="smallko/php-apache-dev:v10")
 
    info('*** Creating links\n')
    net.addLink(h1, d1)
   
    info('*** Starting network\n')
    net.start()
    d1.cmd("/etc/init.d/ssh start")
    #d1.cmd("/etc/init.d/apache2 start")
    #h1.cmd("ssh -Nf -L 192.168.0.1:5555:192.168.0.2:80 user@192.168.0.2")   
 
    info('*** Running CLI\n')
    CLI(net)
 
    info('*** Stopping network')
    net.stop()
 
if __name__ == '__main__':
    setLogLevel('info')
    topology()

2.py

#!/usr/bin/python
from mininet.net import Containernet
from mininet.node import Docker
from mininet.cli import CLI
from mininet.log import setLogLevel, info
from mininet.link import TCLink, Link
 
def topology():
 
    "Create a network with some docker containers acting as hosts."
    net = Containernet()
 
    info('*** Adding hosts\n')
    h1 = net.addHost('h1', ip='192.168.0.1/24')
    d1 = net.addDocker('d1', ip='192.168.0.2/24', dimage="smallko/php-apache-dev:v10")
    h2 = net.addHost('h2', ip='192.168.0.3/24')
    br1 = net.addHost('br1')
 
    info('*** Creating links\n')
    net.addLink(h1, br1)
    net.addLink(d1, br1)
    net.addLink(h2, br1)
   
    info('*** Starting network\n')
    net.start()
    d1.cmd("/etc/init.d/ssh start")
    br1.cmd("ifconfig br1-eth0 0")
    br1.cmd("ifconfig br1-eth1 0")
    br1.cmd("ifconfig br1-eth2 0")
    br1.cmd("brctl addbr br1")
    br1.cmd("brctl addif br1 br1-eth0")
    br1.cmd("brctl addif br1 br1-eth1")
    br1.cmd("brctl addif br1 br1-eth2")
    br1.cmd("ifconfig br1 up") 
 
    info('*** Running CLI\n')
    CLI(net)
 
    info('*** Stopping network')
    net.stop()
 
if __name__ == '__main__':
    setLogLevel('info')
    topology()

3.py

#!/usr/bin/python
from mininet.net import Containernet
from mininet.node import Docker
from mininet.cli import CLI
from mininet.log import setLogLevel, info
from mininet.link import TCLink, Link
 
def topology():
 
    "Create a network with some docker containers acting as hosts."
    net = Containernet()
 
    info('*** Adding hosts\n')
    h1 = net.addHost('h1', ip='192.168.0.1/24')
    r1 = net.addHost('r1', ip='192.168.0.254/24')
    d1 = net.addDocker('d1', ip='10.0.0.1/24', dimage="smallko/php-apache-dev:v10")
 
    info('*** Creating links\n')
    net.addLink(h1, r1)
    net.addLink(r1, d1)
   
    info('*** Starting network\n')
    net.start()
    d1.cmd("/etc/init.d/ssh start")
    r1.cmd("ifconfig r1-eth1 0")
    r1.cmd("ip addr add 10.0.0.2/24 brd + dev r1-eth1")
    r1.cmd("echo 1 > /proc/sys/net/ipv4/ip_forward")
    r1.cmd("iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -o r1-eth1 -j MASQUERADE")
    h1.cmd("ip route add default via 192.168.0.254")
    #h1.cmd("python -m SimpleHTTPServer 80 &") 
 
    info('*** Running CLI\n')
    CLI(net)
 
    info('*** Stopping network')
    net.stop()
 
if __name__ == '__main__':
    setLogLevel('info')
    topology()

4.py

#!/usr/bin/python
from mininet.net import Containernet
from mininet.node import Docker
from mininet.cli import CLI
from mininet.log import setLogLevel, info
from mininet.link import TCLink, Link
 
def topology():
 
    "Create a network with some docker containers acting as hosts."
    net = Containernet()
 
    info('*** Adding hosts\n')
    h1 = net.addHost('h1', ip='192.168.0.1/24')
    h2 = net.addHost('h2', ip='192.168.0.2/24')
    br1 = net.addHost('br1')
    r1 = net.addHost('r1', ip='192.168.0.254/24')
    d1 = net.addDocker('d1', ip='10.0.0.1/24', dimage="smallko/php-apache-dev:v10")
 
    info('*** Creating links\n')
    net.addLink(h1, br1)
    net.addLink(h2, br1)
    net.addLink(r1, br1)
    net.addLink(r1, d1)
    
    info('*** Starting network\n')
    net.start()
    d1.cmd("/etc/init.d/ssh start")
    r1.cmd("ifconfig r1-eth1 0")
    r1.cmd("ip addr add 10.0.0.2/24 brd + dev r1-eth1")
    r1.cmd("echo 1 > /proc/sys/net/ipv4/ip_forward")
    r1.cmd("iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -o r1-eth1 -j MASQUERADE")
    h1.cmd("ip route add default via 192.168.0.254")
    br1.cmd("ifconfig br1-eth0 0")
    br1.cmd("ifconfig br1-eth1 0")
    br1.cmd("ifconfig br1-eth2 0")
    br1.cmd("brctl addbr br1")
    br1.cmd("brctl addif br1 br1-eth0")
    br1.cmd("brctl addif br1 br1-eth1")
    br1.cmd("brctl addif br1 br1-eth2")
    br1.cmd("ifconfig br1 up") 
 
    info('*** Running CLI\n')
    CLI(net)
 
    info('*** Stopping network')
    net.stop()
 
if __name__ == '__main__':
    setLogLevel('info')
    topology()

5.py

#!/usr/bin/python
from mininet.net import Containernet
from mininet.node import Docker
from mininet.cli import CLI
from mininet.log import setLogLevel, info
from mininet.link import TCLink, Link
 
def topology():
 
    "Create a network with some docker containers acting as hosts."
    net = Containernet()
 
    info('*** Adding hosts\n')
    h1 = net.addHost('h1', ip='192.168.0.1/24')
    r1 = net.addHost('r1', ip='192.168.0.254/24')
    d1 = net.addDocker('d1', ip='10.0.0.1/24', dimage="smallko/php-apache-dev:v10")
    br1 = net.addHost('br1')
    h2 = net.addHost('h2', ip='10.0.0.3/24')
    h3 = net.addHost('h3', ip='10.0.0.4/24')
 
    info('*** Creating links\n')
    net.addLink(h1, r1)
    net.addLink(r1, br1)
    net.addLink(d1, br1)
    net.addLink(h2, br1)
    net.addLink(h3, br1)
   
    info('*** Starting network\n')
    net.start()
    d1.cmd("/etc/init.d/ssh start")
    r1.cmd("ifconfig r1-eth1 0")
    r1.cmd("ip addr add 10.0.0.2/24 brd + dev r1-eth1")
    r1.cmd("echo 1 > /proc/sys/net/ipv4/ip_forward")
    r1.cmd("iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -o r1-eth1 -j MASQUERADE")
    r1.cmd("iptables -A FORWARD -s 192.168.0.1 -p tcp --dport 80 -j REJECT")
    h1.cmd("ip route add default via 192.168.0.254")
    br1.cmd("ifconfig br1-eth0 0")
    br1.cmd("ifconfig br1-eth1 0")
    br1.cmd("ifconfig br1-eth2 0")
    br1.cmd("ifconfig br1-eth3 0")
    br1.cmd("brctl addbr br1")
    br1.cmd("brctl addif br1 br1-eth0")
    br1.cmd("brctl addif br1 br1-eth1")
    br1.cmd("brctl addif br1 br1-eth2")
    br1.cmd("brctl addif br1 br1-eth3")
    br1.cmd("ifconfig br1 up") 
   
    info('*** Running CLI\n')
    CLI(net)
 
    info('*** Stopping network')
    net.stop()
 
if __name__ == '__main__':
    setLogLevel('info')
    topology()

Terminal 02

docker pull smallko/php-apache-dev:v10

ifconfig

docker exec -it mn.d1 bash

python -m SimpleHTTPServer 80

h1

curl 192.168.0.2

建立 ssh 加密登入

ssh -Nf -L 5555:192.168.0.2:80 user@192.168.0.2

curl 127.0.0.1:5555

exit

實驗二

Terminal

python3 2.py

xterm h2

xterm h1

h2

ls

cat hi.htm

python -m SimpleHTTPServer 80

h1

ssh -Nf -L 5555:192.168.0.3:80 user@192.168.0.2

curl 127.0.0.1:5555

curl 127.0.0.1:5555/hi.htm

exit

實驗三

Terminal 01

python3 3.py

xterm h1

xterm h1

Terminal - d1

docker exec -it mn.d1 bash

ifconfig

ping 192.168.0.1

netstat -tulnp | grep ssh

curl 127.0.0.1:5555/hi.htm

h1

ifconfig

ping 10.0.0.1 -c 5

python -m SimpleHTTPServer 80

h1 - 2

ssh -Nf -R 10.0.0.1:5555:192.168.0.1:80user@10.0.0.1

• -R：反向

exit

實驗四

Terminal 01

python3 4.py

xterm h1 h2

Terminal - d1

docker exec -it mn.d1 bash

curl 127.0.0.1:5555/hi.htm

h2

ping 192.168.0.1 -c 5

python -m SimpleHTTPServer 80

h1

ping 10.0.0.1 -c 5

ssh -Nf -R 10.0.0.1:5555:192.168.0.2:80user@10.0.0.1

exit

實驗五

Terminal 01

python3 5.py

xterm h2 h3

xterm h1

Terminal - d1

ocker exec -it mn.d1 bash

h2

python -m SimpleHTTPServer 80

h3

python -m SimpleHTTPServer 80

h1

ping 10.0.0.3 -c 5

ping 10.0.0.4 -c 5

curl 10.0.0.3/hi.htm

curl 10.0.0.4/hi.htm

ssh -Nf -D 127.0.0.1:8080 user@10.0.0.1

• -D：Dynamic

su - user

firefox

設定 firefox

exit

Static routing vs Dynamic Routing

Terminal 01

cd containernet

python3 ./setup.py install

cd ..

cd server-test/test-quagga/

 python3 static_routing.py

xterm h1 r1

h1

ping 192.168.2.1 -c 5

traceroute 192.168.2.1

r1

route -n

Terminal 02

docker images

docker pull kathara/quagga

cd dynamic_routing

cd r1

cd quagga

ls

pwd

cd ..

cd ..

cd ..

python3 dynamic_routing.py

exit

h1 - 2

ping 192.168.2.1

traceroute 192.168.2.1

r1

docker ps

docker exec -it mn.r1 bash

telnet localhost 2601

sh ip ro

r2

docker exec -it mn.r2 bash

telnet localhost 2601

sh ip ro

OSPF

exit

Terminal 01

cd server-test/test-quagga-ospf/

ls

docker images

python3 dynamic_routing.py

h1 ping h2 -c 5

xterm h2 h1

r1

docker exec -it mn.r1 bash

telnet localhost 2604

en

sh ip

sh ip ospf

sh ip ospf nei

sh ip ospf ro

關閉eth1後

sh ip ospf ro

h1

traceroute 192.168.2.1

ping 192.168.2.1 -c 5

traceroute 192.168.2.1

r1 - 2

docker exec -it mn.r1 bash

ifconfig r1-eth1 down

Mininet-Wifi ( Miniedit )

Terminal 01

cd mininet-wifi

cd examples

python miniedit.py

cd ..

cd ..

cd test-miniedit

gedit lab3.py

更改 Controller Type 後

gedit

lab3.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')
    s2 = net.addSwitch('s2', cls=OVSKernelSwitch)
    s1 = net.addSwitch('s1', 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(s1, s2)
    net.addLink(s2, h2)
    net.addLink(h1, 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('s2').start([c0])
    net.get('s1').start([c0])

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

    CLI(net)
    net.stop()


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

Terminal 02

python lab3.py

h1 ping h2 -c 5

更改 Controller Type 後

python lab3.py

h1 ping h2 -c 5

ryu 實驗後

h1 ping h2 -c 5

sh ovs-ofctl dump-flows s1

sh ovs-ofctl dump-flows s2

Terminal 03

h1 ping h2 之前

ovs-ofctl dump-flows s1

ovs-ofctl dump-flows s2

h1 ping h2 之後

ovs-ofctl dump-flows s1

ovs-ofctl dump-flows s2

更改 Controller Type 後

cd ..

cd ryu

cd ryu

cd app

ryu-manager simple_switch.py

Terminal 01

cd mininet-wifi

util/install.sh -n

cd examples

python miniedit.py

py sta1.params

py sta1.wintfs

py sta1.wintfs[0].txpower

sta1 iwconfig

py sta1.setRange(10, intf='sta1-wlan0')

Terminal 02

cd test-miniedit

gedit 7.py

python 7.py

sta1 ifconfig

與無線網路相關

sta1 iwconfig

sta2 iwconfig

sta1 ping sta2 -c 5

xterm sta1

gedit

7.py

#!/usr/bin/python

from mininet.log import setLogLevel, info
from mn_wifi.net import Mininet_wifi
from mn_wifi.node import Station, OVSKernelAP
from mn_wifi.cli import CLI
from mn_wifi.link import wmediumd
from mn_wifi.wmediumdConnector import interference
from subprocess import call


def myNetwork():

    net = Mininet_wifi(topo=None,
                       build=False,
                       link=wmediumd,
                       wmediumd_mode=interference,
                       ipBase='10.0.0.0/8')

    info( '*** Adding controller\n' )
    info( '*** Add switches/APs\n')
    ap3 = net.addAccessPoint('ap3', cls=OVSKernelAP, ssid='ap3-ssid',
                             channel='1', mode='g', position='526.0,325.0,0')
    ap1 = net.addAccessPoint('ap1', cls=OVSKernelAP, ssid='ap1-ssid',
                             channel='1', mode='g', position='442.0,199.0,0')
    ap2 = net.addAccessPoint('ap2', cls=OVSKernelAP, ssid='ap2-ssid',
                             channel='1', mode='g', position='372.0,328.0,0')

    info( '*** Add hosts/stations\n')
    sta1 = net.addStation('sta1', ip='10.0.0.1',
                           position='297.0,199.0,0')
    sta2 = net.addStation('sta2', ip='10.0.0.2',
                           position='590.0,200.0,0')

    info("*** Configuring Propagation Model\n")
    net.setPropagationModel(model="logDistance", exp=3)

    info("*** Configuring wifi nodes\n")
    net.configureWifiNodes()

    info( '*** Add links\n')
    net.addLink(sta1, ap1)
    net.addLink(ap1, sta2)

    net.plotGraph(max_x=1000, max_y=1000)

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

    info( '*** Starting switches/APs\n')
    net.get('ap3').start([])
    net.get('ap1').start([])
    net.get('ap2').start([])

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

    CLI(net)
    net.stop()


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

sta1

mx sta1 iwconfig

主動式掃描附近基地台

mx sta1 iwlist sta1-wlan0 scan

mx sta2 iwlist sta2-wlan0 scan

mx sta1 iw dev sta1-wlan0 disconnect

mx sta1 iwconfig

mx sta1 iwlist sta1-wlan0 scan

mx sta1 iw dev sta1-wlan0 connect ap1-ssid

mx sta1 ping 10.0.0.2

mx ap1 iwconfig

mx ap1 iw dev ap1-wlan1 station dump

mx ap1 iw dev ap1-wlan1 station dump | grep Station