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testtopology.py
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testtopology.py
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#!/usr/bin/python
#run the foolowing command
# ./Testtopology -t 10
# -t simulation time
import sys
from subprocess import Popen, PIPE
from time import sleep
#import termcolor as T
import argparse
import os
import itertools
import random
import getopt
from mininet.util import dumpNodeConnections
from mininet.net import Mininet
from mininet.log import lg
from mininet.node import OVSKernelSwitch as Switch
from mininet.link import Link, TCLink
from mininet.util import *
from mininet.node import *
from mininet.topo import Topo
from mininet.cli import *
from mininet.util import makeNumeric, custom
#topology
# C1-------------------------C2-------------------------------C3
class MyTopo( Topo ):
"Simple topology example."
def __init__( self ):
"Create custom topo."
# Initialize topology
Topo.__init__( self )
# Add hosts
A = self.addHost('A')
B = self.addHost('B')
C = self.addHost('C')
D = self.addHost('D')
E = self.addHost('E')
# Add links
self.addLink (A, B)
self.addLink (B, C)
self.addLink (B, D)
self.addLink (C, D)
self.addLink (D, E)
topos = { 'mytopo': ( lambda: MyTopo() ) }
def parse_args():
parser = argparse.ArgumentParser(description="test")
parser.add_argument('-t',
action="store",
help="Seconds to run the experiment",
default=2)
args = parser.parse_args()
args.t = float(args.t)
return args
def progress(t):
while t > 0:
t -= 1
sys.stdout.flush()
sleep(1)
print '\r\n'
def Config(net, args):
A = net.getNodeByName('A')
B = net.getNodeByName('B')
C = net.getNodeByName('C')
D = net.getNodeByName('D')
E = net.getNodeByName('E')
AB = A.intf(A.name+'-eth0')
BA = B.intf(B.name+'-eth0')
AB.config(bw=10, delay='10ms', loss=3.0, use_tbf=False)
BA.config(bw=10, delay='10ms', loss=3.0, use_tbf=False)
BC = B.intf(B.name+'-eth1')
CB = C.intf(C.name+'-eth0')
BC.config(bw=10, delay='10ms', loss=3.0, use_tbf=False)
CB.config(bw=10, delay='10ms', loss=3.0, use_tbf=False)
BD = B.intf(B.name+'-eth2')
DB = D.intf(D.name+'-eth0')
BD.config(bw=10, delay='10ms', loss=3.0, use_tbf=False)
DB.config(bw=10, delay='10ms', loss=3.0, use_tbf=False)
CD = C.intf(C.name+'-eth1')
DC = D.intf(D.name+'-eth1')
CD.config(bw=10, delay='10ms', loss=3.0, use_tbf=False)
DC.config(bw=10, delay='10ms', loss=3.0, use_tbf=False)
DE = D.intf(D.name+'-eth2')
ED = E.intf(E.name+'-eth0')
DE.config(bw=10, delay='10ms', loss=3.0, use_tbf=False)
ED.config(bw=10, delay='10ms', loss=3.0, use_tbf=False)
#Enter commands here
A.cmd('xterm -T A_daemon &')
B.cmd('xterm -T B_daemon &')
C.cmd('xterm -T C_daemon &')
D.cmd('xterm -T D_daemon &')
E.cmd('xterm -T E_daemon &')
progress(int(args.t))
#C3.sendInt()
A.sendInt()
B.sendInt()
C.sendInt()
D.sendInt()
E.sendInt()
def main(argv):
args = parse_args()
lg.setLogLevel('info')
"Create and run experiment"
topo = MyTopo()
net = Mininet(topo=topo, link=TCLink, controller = OVSController)
net.start()
Config(net,args)
#dumpNodeConnections(net.hosts)
net.stop()
if __name__ == '__main__':
main(sys.argv)