20210412 Openvswitch ( 一 )
課堂資料
課堂練習
Openvswitch
lab1
lab2
期中考題練習
ICPM Request / ICPM Reply
Last updated
Last updated
mkdir ovs-testcd ovs-testmkdir lab1cd lab1gedit lab1.py &mnh1 ping h2 -c 5exit#!/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')
h2 = net.addHost('h2')
s1 = net.addSwitch('s1')
s2 = net.addSwitch('s2')
s3 = net.addSwitch('s3')
c0 = net.addController('c0', controller=RemoteController)
net.addLink(h1, s1)
net.addLink(s1, s2)
net.addLink(s1, s3)
net.addLink(s3, s2)
net.addLink(s2, h2)
net.build()
c0.start()
s1.start([c0])
s2.start([c0])
s3.start([c0])
# rules for s1
s1.cmd("ovs-ofctl add-flow s1 arp,arp_op=1,arp_spa=10.0.0.1,arp_tpa=10.0.0.2,actions=output:2")
s1.cmd("ovs-ofctl add-flow s1 arp,arp_op=1,arp_spa=10.0.0.2,arp_tpa=10.0.0.1,actions=output:1")
s1.cmd("ovs-ofctl add-flow s1 arp,arp_op=2,arp_spa=10.0.0.1,arp_tpa=10.0.0.2,actions=output:2")
s1.cmd("ovs-ofctl add-flow s1 arp,arp_op=2,arp_spa=10.0.0.2,arp_tpa=10.0.0.1,actions=output:1")
s1.cmd("ovs-ofctl add-flow s1 icmp,nw_src=10.0.0.1,nw_dst=10.0.0.2,icmp_type=8,icmp_code=0,actions=output:3")
s1.cmd("ovs-ofctl add-flow s1 icmp,nw_src=10.0.0.2,nw_dst=10.0.0.1,icmp_type=0,icmp_code=0,actions=output:1")
# rules for s2
s2.cmd("ovs-ofctl add-flow s2 arp,arp_op=1,arp_spa=10.0.0.1,arp_tpa=10.0.0.2,actions=output:3")
s2.cmd("ovs-ofctl add-flow s2 arp,arp_op=1,arp_spa=10.0.0.2,arp_tpa=10.0.0.1,actions=output:1")
s2.cmd("ovs-ofctl add-flow s2 arp,arp_op=2,arp_spa=10.0.0.1,arp_tpa=10.0.0.2,actions=output:3")
s2.cmd("ovs-ofctl add-flow s2 arp,arp_op=2,arp_spa=10.0.0.2,arp_tpa=10.0.0.1,actions=output:1")
s2.cmd("ovs-ofctl add-flow s2 icmp,nw_src=10.0.0.1,nw_dst=10.0.0.2,icmp_type=8,icmp_code=0,actions=output:3")
s2.cmd("ovs-ofctl add-flow s2 icmp,nw_src=10.0.0.2,nw_dst=10.0.0.1,icmp_type=0,icmp_code=0,actions=output:1")
# rules for s3
s3.cmd("ovs-ofctl add-flow s3 icmp,nw_src=10.0.0.1,nw_dst=10.0.0.2,icmp_type=8,icmp_code=0,actions=output:2")
CLI(net)
net.stop()ovs-ofctl dump-flows s1mn --controller=remoteh1 ping h2h1 arp -nh1 ping h2 -c 5h1 arp -nh2 arp -nh1 ping h2 -c 5ovs-ofctl add-flow s1 arp,arp_spa=10.0.0.1,arp_tpa=10.0.0.2,arp_op=1,actions=output:2ovs-ofctl add-flow s1 arp,arp_spa=10.0.0.2,arp_tpa=10.0.0.1,arp_op=1,actions=output:1ovs-ofctl dump-flows s1ovs-ofctl add-flow s1 icpm,nw_src=10.0.0.1,nw_dst=10.0.0.2,icpm_type=8,icpm_code=0,actions=output:2ovs-ofctl add-flow s1 icpm,nw_src=10.0.0.2,nw_dst=10.0.0.1,icpm_type=0,icpm_code=0,actions=output:1ovs-ofctl dump-flows s1python lab1.pyovs-ofctl add-flow s1 arp,arp_op=1,arp_spa=10.0.0.1,arp_tpa=10.0.0.2,actions=output:2ovs-ofctl add-flow s1 arp,arp_op=1,arp_spa=10.0.0.2,arp_tpa=10.0.0.1,actions=output:1ovs-ofctl add-flow s1 arp,arp_op=2,arp_spa=10.0.0.1,arp_tpa=10.0.0.2,actions=output:2ovs-ofctl add-flow s1 arp,arp_op=2,arp_spa=10.0.0.2,arp_tpa=10.0.0.1,actions=output:1ovs-ofctl add-flow s1 icmp,nw_src=10.0.0.1,nw_dst=10.0.0.2,icmp_type=8,icmp_code=0,actions=output:3ovs-ofctl add-flow s1 icmp,nw_src=10.0.0.2,nw_dst=10.0.0.1,icmp_type=0,icmp_code=0,actions=output:1ovs-ofctl dump-flows s1ovs-ofctl add-flow s2 arp,arp_op=1,arp_spa=10.0.0.1,arp_tpa=10.0.0.2,actions=output:3ovs-ofctl add-flow s2 arp,arp_op=1,arp_spa=10.0.0.2,arp_tpa=10.0.0.1,actions=output:1ovs-ofctl add-flow s2 arp,arp_op=2,arp_spa=10.0.0.1,arp_tpa=10.0.0.2,actions=output:3ovs-ofctl add-flow s2 arp,arp_op=2,arp_spa=10.0.0.2,arp_tpa=10.0.0.1,actions=output:1ovs-ofctl add-flow s2 icmp,nw_src=10.0.0.1,nw_dst=10.0.0.2,icmp_type=8,icmp_code=0,actions=output:3ovs-ofctl add-flow s2 icmp,nw_src=10.0.0.2,nw_dst=10.0.0.1,icmp_type=0,icmp_code=0,actions=output:2ovs-ofctl dump-flows s2ovs-ofctl add-flow s3 icmp,nw_src=10.0.0.1,nw_dst=10.0.0.2,icmp_type=8,icmp_code=0,actions=output:2ovs-ofctl dump-flows s3xterm s3 s2wiresharkwiresharkh1 ping h2 -c 5h1 ping s2h1 ping h2 -c 5ovs-ofctl dump-flows s2ovs-ofctl del-flows s2 icmp,nw_src=10.0.0.2,nw_dst=10.0.0.1,icmp_type=0,icmp_code=0ovs-ofctl add-flow s2 icmp,nw_src=10.0.0.2,nw_dst=10.0.0.1,icmp_type=0,icmp_code=0,actions=output:1ovs-ofctl dump-flows s2h1 ping h2 -c 5cd ..mkdir lab2cd lab2gedit lab2.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="10.0.0.1/24", mac="00:00:00:00:00:01")
h2 = net.addHost('h2', ip="10.0.0.2/24", mac="00:00:00:00:00:02")
h3 = net.addHost('h3', ip="10.0.0.3/24", mac="00:00:00:00:00:03")
s1 = net.addSwitch('s1')
c0 = net.addController('c0', controller=RemoteController)
net.addLink(h1, s1)
net.addLink(h2, s1)
net.addLink(h3, s1)
net.build()
c0.start()
s1.start([c0])
h1.cmd("arp -s 10.0.0.2 00:00:00:00:00:02")
h1.cmd("arp -s 10.0.0.3 00:00:00:00:00:03")
h2.cmd("arp -s 10.0.0.1 00:00:00:00:00:01")
h2.cmd("arp -s 10.0.0.3 00:00:00:00:00:03")
h3.cmd("arp -s 10.0.0.1 00:00:00:00:00:01")
h3.cmd("arp -s 10.0.0.2 00:00:00:00:00:02")
#rules for s1
#ovs-ofctl add-flow s1 priority=1,ip,nw_dst=10.0.0.1,actions=output:1
#ovs-ofctl add-flow s1 priority=1,ip,nw_dst=10.0.0.2,actions=output:2
#ovs-ofctl add-flow s1 priority=1,ip,nw_dst=10.0.0.3,actions=output:3
#ovs-ofctl add-flow s1 priority=10,udp,nw_dst=10.0.0.2,actions=output:2,mod_dl_dst=00:00:00:00:00:03,mod_nw_dst=10.0.0.3,output:3
CLI(net)
net.stop()python lab2.pyovs-ofctl add-flow s1 ip,nw_src=10.0.0.1,actions=output:2,output:3ovs-ofctl del-flows s1ovs-ofctl add-flow s1 priority=1,ip,nw_dst=10.0.0.1,actions=output:1ovs-ofctl add-flow s1 priority=1,ip,nw_dst=10.0.0.2,actions=output:2ovs-ofctl add-flow s1 priority=1,ip,nw_dst=10.0.0.3,actions=output:3xterm h1 h2 h3iperf -s -i 1 -uwiresharkping 10.0.0.2iperf -c 10.0.0.2 -u -b 1M -t 1000pingallovs-ofctl add-flow s1 priority=10,ip,nw_src=10.0.0.1,nw_dst=10.0.0.2,actions=output:2,output:3ovs-ofctl dump-flows s1ovs-ofctl dump-flows s1ovs-ofctl show s1ovs-ofctl add-flow s1 priority=10,ip,nw_src=10.0.0.1,nw_dst=10.0.0.2,actions=output:2,mod_nw_dst=10.0.0.3,output:3ovs-ofctl dump-flows s1ovs-ofctl add-flow s1 priority=100,ip,nw_src=10.0.0.1,nw_dst=10.0.0.2,actions=output:2,mod_nw_dst=10.0.0.3,mod_dl_dst=00:00:00:03,output:3iperf -s -i 1iperf -s -i 1iperf -c 10.0.0.2 -t 100iperf -c 10.0.0.2 -t 100 -i 1mkdir examcd examgedit 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()gedit router.py#!/usr/bin/env python
from mininet.cli import CLI
from mininet.net import Mininet
from mininet.link import Link,TCLink
if '__main__' == __name__:
net = Mininet(link=TCLink)
h1 = net.addHost('h1')
h2 = net.addHost('h2')
r1 = net.addHost('r1')
r2 = net.addHost('r2')
r3 = net.addHost('r3')
r4 = net.addHost('r4')
net.addLink(h1, r1)
net.addLink(r1, r2)
net.addLink(r1, r3)
net.addLink(r2, r4)
net.addLink(r3, r4)
net.addLink(r4, h2)
net.build()
h1.cmd("ifconfig h1-eth0 0")
h1.cmd("ip addr add 192.168.10.1/24 brd + dev h1-eth0")
#h1.cmd("ip route add default via 192.168.10.254")
h1.cmd("ip route add 12.1.1.0/24 via 192.168.10.254")
h1.cmd("ip route add 13.1.1.0/24 via 192.168.10.254")
h1.cmd("ip route add 23.1.1.0/24 via 13.1.1.3")
h1.cmd("ip route add 34.1.1.0/24 via 12.1.1.2")
h1.cmd("ip route add 192.168.20.0/24 via 34.1.1.4")
h1.cmd("ip route add 192.168.20.0/24 via 23.1.1.4")
h2.cmd("ifconfig h2-eth0 0")
h2.cmd("ip addr add 192.168.20.1/24 brd + dev h2-eth0")
#h2.cmd("ip route add default via 192.168.20.254")
h2.cmd("ip route add 12.1.1.0/24 via 34.1.1.2")
h2.cmd("ip route add 13.1.1.0/24 via 23.1.1.3")
h2.cmd("ip route add 23.1.1.0/24 via 192.168.20.254")
h2.cmd("ip route add 34.1.1.0/24 via 192.168.20.254")
h2.cmd("ip route add 192.168.10.0/24 via 34.1.1.2")
h2.cmd("ip route add 192.168.10.0/24 via 23.1.1.3")
r1.cmd("ifconfig r1-eth0 0")
r1.cmd("ifconfig r1-eth1 0")
r1.cmd("ifconfig r1-eth2 0")
r1.cmd("ip addr add 192.168.10.254/24 brd + dev r1-eth0")
r1.cmd("ip addr add 12.1.1.1/24 brd + dev r1-eth1")
r1.cmd("ip addr add 13.1.1.1/24 brd + dev r1-eth2")
r1.cmd("echo 1 > /proc/sys/net/ipv4/ip_forward")
r1.cmd("ip route add 34.1.1.0/24 via 12.1.1.2")
r1.cmd("ip route add 23.1.1.0/24 via 13.1.1.3")
r1.cmd("ip route add 192.168.20.0/24 via 23.1.1.4")
r1.cmd("ip route add 192.168.20.0/24 via 34.1.1.4")
r2.cmd("ifconfig r2-eth0 0")
r2.cmd("ifconfig r2-eth1 0")
r2.cmd("ip addr add 12.1.1.2/24 brd + dev r2-eth0")
r2.cmd("ip addr add 34.1.1.2/24 brd + dev r2-eth1")
r2.cmd("echo 1 > /proc/sys/net/ipv4/ip_forward")
r2.cmd("ip route add 13.1.1.0/24 via 12.1.1.1")
r2.cmd("ip route add 23.1.1.0/24 via 34.1.1.4")
r2.cmd("ip route add 192.168.10.0/24 via 12.1.1.1")
r2.cmd("ip route add 192.168.20.0/24 via 34.1.1.4")
r3.cmd("ifconfig r3-eth0 0")
r3.cmd("ifconfig r3-eth1 0")
r3.cmd("ip addr add 13.1.1.3/24 brd + dev r3-eth0")
r3.cmd("ip addr add 23.1.1.3/24 brd + dev r3-eth1")
r3.cmd("echo 1 > /proc/sys/net/ipv4/ip_forward")
r3.cmd("ip route add 12.1.1.0/24 via 13.1.1.1")
r3.cmd("ip route add 34.1.1.0/24 via 23.1.1.4")
r3.cmd("ip route add 192.168.10.0/24 via 13.1.1.1")
r3.cmd("ip route add 192.168.20.0/24 via 23.1.1.4")
r4.cmd("ifconfig r4-eth0 0")
r4.cmd("ifconfig r4-eth1 0")
r4.cmd("ifconfig r4-eth2 0")
r4.cmd("ip addr add 34.1.1.4/24 brd + dev r4-eth0")
r4.cmd("ip addr add 23.1.1.4/24 brd + dev r4-eth1")
r4.cmd("ip addr add 192.168.20.254/24 brd + dev r4-eth2")
r4.cmd("echo 1 > /proc/sys/net/ipv4/ip_forward")
r4.cmd("ip route add 12.1.1.0/24 via 34.1.1.2")
r4.cmd("ip route add 13.1.1.0/24 via 23.1.1.3")
r4.cmd("ip route add 192.168.10.0/24 via 12.1.1.1")
r4.cmd("ip route add 192.168.10.0/24 via 13.1.1.1")
CLI(net)
net.stop()