20210315 Gnuplot

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20210315 Gnuplot

課堂資料

課堂練習

建立網路拓樸

cd mininet

mn --link=tc,bw=10,delay=1ms,loss=5

mn --link=tc,bw=10,delay='1ms',loss=0

h1 ping h2

xterm h1 h2

iperf -s -i 1

iperf -c 10.0.0.2 -t 100

h1 ping -c 1000 -i 0.01 h2

exit

mn --link=tc,bw=10,delay='10ms',loss=2

h1 ping -c 1000 -i 0.01 h2

xterm h1 h2 h1 h2

iperf -s -i 1 -p 5555 > tcp

iperf -c 10.0.0.2 -p 5555 -t 100

iperf -s -i 1 -p 6666 -u | tee udp

iperf -c 10.0.0.2 -p 6666 -u -b 3M -t 100

exit

mn --link=tc,bw=100,delay='10ms',loss=2

xterm h1 h2

iperf -c -i 1 -p 5555 | tee tee

iperf -c 10.0.0.2 -t 100 -p 5555

exit

mn --link=tc,bw=10,delay='10ms',loss=0

xterm h1 h2 h1 h2

iperf -c -i 1 -p 5555 | tee tcp

iperf -c 10.0.0.2 -t 100 -p 5555

iperf -c -i 1 -p 6666 -u | tee udp

iperf -c 10.0.0.2 -p 6666 -u -b 3M -t 100

exit

cat tcp | grep "sec" | head -n 100 | tr "-" " " | awk '{print $4,$8}' > mytcp

cat udp | grep "sec" | head -n 100 | tr "-" " " | awk '{print $4,$8}' > myudp

Gnuplot

gnuplot

plot "mytcp" title "tcp_flow" with linespoints, "myudp" title "udp_flow" with linespoints

set xrange [0:100]

set xtics 0,10,100

set yrange [0:10]

set ytics 0,1,10

replot

set xlabel "time(sec)"

set ylabel "throughput(Mbps)"

replot

set title "tcp vs. udp"

replot

set terminal "gif"

set output "a.gif"

report

使用腳本建立 Mininet

建立腳本

gedit 1.py

1.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')
  Link(h1, h2)
  net.build()
  CLI(net)
  net.stop()

python 1.py

net

h1 ifconfig

h2 ifconfig

h1 ping -c 3 h2

exit

cp 1.py 2.py

gedit 2.py

2.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')
  r = net.addHost('r')
  Link(h1, r)
  Link(h2, r)
  net.build()
  CLI(net)
  net.stop()

python 2.py

xterm h1 h2 r

ifconfig

ifconfig h1-eth0 0

ip addr add 192.168.1.1/24 brd + dev h1-eth0

ip ro sh

route -n

ip ro add default via 192.168.1.254

ip ro sh

route -n

ping 192.168.1.254

ping 192.168.1.1

ping 192.168.2.254

arp -n

ip ro sh

ifconfig

ifconfig h2-eth0 0

ip addr add 192.168.2.1/24 brd + dev h2-eth0

ip ro sh

route -n

ip ro add default via 192.168.2.254

ip ro sh

route -n

ping 192.168.2.1

ping 192.168.1.254

ping 192.168.1.1

ping 192.168.1.1

ifconfig

ifconfig r-eth0 0

ifconfig r-eth1 0

ip addr add 192.168.1.254 brd + dev r-eth0

ip addr add 192.168.2.254 brd + dev r-eth1

ifconfig

ip add sh

ifconfig r-eth0 0

ifconfig r-eth1 0

ip addr add 192.168.1.254/24 brd + dev r-eth0

ip addr add 192.168.2.254/24 brd + dev r-eth1

ifconfig

cat /proc/sys/net/ipv4/ip_forward

echo 1 > /proc/sys/net/ipv4/ip_forward

cat /proc/sys/net/ipv4/ip_forward

net

gedit 3.py

3.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')
  Link(h1, r1)
  Link(h2, r2)
  Link(r1, r2)
  net.build()
  h1.cmd("ifconfig h1-eth0 0")
  h1.cmd("ip addr add 192.168.1.1/24 brd + dev h1-eth0")
  h1.cmd("ip route add default via 192.168.1.254")
  h2.cmd("ifconfig h2-eth0 0")
  h2.cmd("ip addr add 192.168.2.1/24 brd + dev h2-eth0")
  h2.cmd("ip route add default via 192.168.2.254")
  r1.cmd("ifconfig r1-eth0 0")
  r1.cmd("ifconfig r1-eth1 0")
  r1.cmd("ip addr add 192.168.1.254/24 brd + dev r1-eth0")
  r1.cmd("ip addr add 10.0.0.1/24 brd + dev r1-eth1")
  r1.cmd("echo 1 > /proc/sys/net/ipv4/ip_forward")
  r1.cmd("ip route add 192.168.2.0/24 via 10.0.0.2")
  r2.cmd("ifconfig r2-eth0 0")
  r2.cmd("ifconfig r2-eth1 0")
  r2.cmd("ip addr add 192.168.2.254/24 brd + dev r2-eth0")
  r2.cmd("ip addr add 10.0.0.2/24 brd + dev r2-eth1")
  r2.cmd("echo 1 > /proc/sys/net/ipv4/ip_forward")
  r2.cmd("ip route add 192.168.1.0/24 via 10.0.0.1")
  CLI(net)
  net.stop()

python 3.py

net

練習：安裝 P4

生成 SSH ( GitHub 新增 )

apt-get install ssh

ls -al ~/.ssh

ssh-keygen -t rsa -C "xiaoji850312@gmail.com"

ssh-add ~/.ssh/id_rsa

cat /root/.ssh/id_rsa.pub

apt install python3.8

apt install python3.8-distutils

wget https://bootstrap.pypa.io/get-pip.py

python3.8 get-pip.py.1

git clone git@github.com:p4lang/behavioral-model.git

cd behavioral-model

./install_deps.sh

./autogen.sh

./configure

make

make install

練習：安裝 Mininet-WiFi ( 失敗 )

cd ..

apt-get install git

git clone https://github.com/intrig-unicamp/mininet-wifi

cd mininet-wifi

util/install.sh -Wlnfv

mn --wifi

Previous20210308 Iperf Next20210322 Bridge ( 一 )

Last updated 3 years ago

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