def main():
"Create and run experiment"
start = time()
topo = MNTopo()
host = custom(CPULimitedHost, cpu=.15) # 15% of system bandwidth
link = custom(TCLink, max_queue_size=200)
net = Mininet(topo=topo, host=host, link=link)
net.start()
print "*** Dumping network connections:"
dumpNetConnections(net)
print "*** Testing connectivity"
net.pingAll()
if args.cli:
# Run CLI instead of experiment
CLI(net)
else:
print "*** Running experiment"
run_topology_experiment(net)
net.stop()
end = time()
os.system("killall -9 bwm-ng")
print "Experiment took %.3f seconds" % (end - start)
def run_debug():
if not os.path.exists(TEST_DIR):
os.mkdir(TEST_DIR)
logfile = '%s/tp_log' % TEST_DIR
init_log(logfile, 'Throughput (Mbps)\n')
topo = BurstTestTopo()
net = Mininet(topo=topo, host=CPULimitedHost, link=TCLink)
net.start()
dumpNetConnections(net)
net.pingAll()
"""
verify_latency(net)
verify_bandwidth(net)
verify_throughput(net)
"""
start_senders(net, n_senders=1)
start_receiver(net, n_senders=1, sim_duration=3,
max_window_list=[SIM2_MAX_WINDOW_LOW])
rates = get_rates('s1-eth0', nsamples=200, period=0.01, wait=1.0)
for z in rates:
write_to_log(logfile, str(z) + '\n')
net.stop()
def run_debug():
if not os.path.exists(TEST_DIR):
os.mkdir(TEST_DIR)
logfile = '%s/tp_log' % TEST_DIR
init_log(logfile, 'Throughput (Mbps)\n')
topo = BurstTestTopo()
net = Mininet(topo=topo, host=CPULimitedHost, link=TCLink)
net.start()
dumpNetConnections(net)
net.pingAll()
"""
verify_latency(net)
verify_bandwidth(net)
verify_throughput(net)
"""
start_senders(net, n_senders=1)
start_receiver(net,
n_senders=1,
sim_duration=3,
max_window_list=[SIM2_MAX_WINDOW_LOW])
rates = get_rates('s1-eth0', nsamples=200, period=0.01, wait=1.0)
for z in rates:
write_to_log(logfile, str(z) + '\n')
net.stop()
def main():
"Parse argument"
args = parse_args()
if not os.path.exists(args.dir):
os.makedirs(args.dir)
"Create network topology, running experiments"
lg.setLogLevel('info')
start = time()
cprint("*** Creating network topology:", "yellow")
topo = MMwaveTestTopo(mmwavebw=args.bw)
host = custom(CPULimitedHost, cpu=0.2) # 20% of system bandwidth (why?)
link = custom(TCLink)
net = Mininet(topo=topo, host=host, link=link)
net.start()
cprint("*** Dumping network connections:", "green")
dumpNetConnections(net)
cprint("*** Configure MPTCP", "red")
configMPTCP(net, args)
cprint("*** Testing connectivity", "blue")
net.pingAll()
cprint("*** Running experiment", "magenta")
#CLI(net)
run(net, args)
end = time()
cprint("*** Finishing experiment, took %.3f seconds" % (end - start), "yellow")
net.stop()
def main():
"Create and run experiment"
start = time()
topo = NetworkTopo()
host = custom(CPULimitedHost)
net = Mininet(topo=topo, host=host)
net.start()
print "*** Dumping network connections:"
dumpNetConnections(net)
if args.cli:
# Run CLI instead of experiment
CLI(net)
else:
print "*** Running experiment"
#run_topology_experiment(net)
net.stop()
end = time()
# os.system("killall -9 tshark")
# os.system("chown mininet:mininet /tmp/*.cap ; mv /tmp/*.cap %s" % (args.dir))
print "Experiment took %.3f seconds" % (end - start)
def main():
"Create and run experiment"
start = time()
topo = MNTopo()
host = custom(CPULimitedHost, cpu=.15) # 15% of system bandwidth
link = custom(TCLink, max_queue_size=200)
net = Mininet(topo=topo, host=host, link=link)
net.start()
print "*** Dumping network connections:"
dumpNetConnections(net)
print "*** Testing connectivity"
net.pingAll()
if args.cli:
# Run CLI instead of experiment
CLI(net)
else:
print "*** Running experiment"
run_topology_experiment(net)
net.stop()
end = time()
os.system("killall -9 bwm-ng")
print "Experiment took %.3f seconds" % (end - start)
def main():
"Create and run experiment"
start = time()
topo = ParkingLotTopo(n=args.n)
host = custom(CPULimitedHost, cpu=.15) # 15% of system bandwidth
link = custom(TCLink, bw=args.bw, delay='1ms',
max_queue_size=200)
net = Mininet(topo=topo, host=host, link=link)
net.start()
cprint("*** Dumping network connections:", "green")
dumpNetConnections(net)
cprint("*** Testing connectivity", "blue")
net.pingAll()
if args.cli:
# Run CLI instead of experiment
CLI(net)
else:
cprint("*** Running experiment", "magenta")
run_parkinglot_expt(net, n=args.n)
net.stop()
end = time()
os.system("killall -9 bwm-ng")
cprint("Experiment took %.3f seconds" % (end - start), "yellow")
def main():
topo = KLTopo()
host = custom(CPULimitedHost, cpu=.15)
link = custom(TCLink, bw=10, delay='1ms', max_queue_size=200)
net = Mininet(topo=topo, host=host, link=link, controller=RemoteController)
net.start()
dumpNetConnections(net)
CLI(net)
def run_experiment( output = "sender.dump"):
topo = MyTopo()
host = custom(CPULimitedHost, cpu = .15)
link = custom(TCLink, bw=1000, delay='100ms')
net = Mininet(topo=topo, host=host, link=link)
net.start()
dumpNetConnections(net)
net.pingAll()
sender = net.getNodeByName('sender')
receiver = net.getNodeByName('receiver')
if CAPTURE_ACKS:
sender.cmd("tcpdump -tt -nn 'tcp port 5001' &> %s &" % output)
else:
sender.cmd("tcpdump -tt -nn 'tcp dst port 5001' &> %s &" % output)
sleep(1)
# randomize address, because after a few repeats, the slow start is not observed anymore
rand = str(random.randint(0,99)).zfill(2)
receiver_IP = '1%s.11.0.2' % rand
gateway_IP = '1%s.11.0.1' % rand
receiver.cmd('../lwip/tcpsink -p 5001 -i %s -g %s &> receiver.out &' % (receiver_IP, gateway_IP))
#make receiver forward packets from sender to internal tap interface
receiver.cmd('sysctl net.ipv4.ip_forward=1')
sender.cmd('sysctl net.core.netdev_max_backlog=500000')
sender.cmd('sysctl net.ipv4.tcp_congestion_control=cubic')
#add default route so that sender can sender to receiver's tap interface through the mininet link
sender.cmd('route add default gw %s' % receiver.IP())
#reduce MTU because otherwise the receive window is the limiting factor
sender.cmd('ifconfig sender-eth0 mtu 200')
print "starting transmission of data to %s" % receiver_IP
sender.sendCmd('python sender.py --receiver=%s &> sender.out' % receiver_IP)
print "waiting for transmission to complete"
sender.waitOutput()
print "killing tcpdump"
sender.cmd('killall tcpdump')
sleep(1)
print "killing tcpsink"
receiver.cmd("killall tcpsink")
net.stop()
def main():
"Create and run experiment"
start = time()
topo = DaSDNTopo(n=args.n)
host = custom(CPULimitedHost, cpu=.15) # 15% of system bandwidth
link = custom(TCLink, bw=args.bw, delay='1ms',
max_queue_size=200)
net = Mininet(topo=topo, host=host, link=link)
net.start()
cprint("*** Dumping network connections:", "green")
dumpNetConnections(net)
cprint("*** Setting default port config", "green")
# 设置默认的端口带宽策略
port_default_config("s2-eth99", bw=50, tx_queue_len=10)
cprint("*** Testing connectivity", "blue")
net.pingAll()
# if args.cli:
# Run CLI instead of experiment
# CLI(net)
#else:
if True:
cprint("*** Running experiment", "magenta")
print 'thread %s is running...' % threading.current_thread().name
# Start Bandwith control thread to Simulation SDN Ctl
if args.switch_bw:
t1 = threading.Thread(target=monitor_thread_switch_bw, name='ThreadBwCtl')
t1.start()
t2 = threading.Thread(target=run_dasdn_expt, args=(net, args.n), name='ThreadRunExpt')
t2.start()
if args.switch_bw: # t1.join需要放在 t2.join cli 之前
t1.join()
t2.join()
net.stop()
end = time()
os.system("killall -9 bwm-ng")
cprint("Experiment took %.3f seconds" % (end - start), "yellow")
def run_experiment(output="sender.dump"):
topo = MyTopo()
host = custom(CPULimitedHost, cpu=.15)
link = custom(TCLink, bw=1000, delay='100ms')
net = Mininet(topo=topo, host=host, link=link)
net.start()
dumpNetConnections(net)
net.pingAll()
sender = net.getNodeByName('sender')
receiver = net.getNodeByName('receiver')
if CAPTURE_ACKS:
sender.cmd("tcpdump -tt -nn 'tcp port 5001' &> %s &" % output)
else:
sender.cmd("tcpdump -tt -nn 'tcp dst port 5001' &> %s &" % output)
sleep(1)
# randomize address, because after a few repeats, the slow start is not observed anymore
rand = str(random.randint(0, 99)).zfill(2)
receiver_IP = '1%s.11.0.2' % rand
gateway_IP = '1%s.11.0.1' % rand
receiver.cmd('../lwip/tcpsink -p 5001 -i %s -g %s &> receiver.out &' %
(receiver_IP, gateway_IP))
#make receiver forward packets from sender to internal tap interface
receiver.cmd('sysctl net.ipv4.ip_forward=1')
sender.cmd('sysctl net.core.netdev_max_backlog=500000')
sender.cmd('sysctl net.ipv4.tcp_congestion_control=cubic')
#add default route so that sender can sender to receiver's tap interface through the mininet link
sender.cmd('route add default gw %s' % receiver.IP())
#reduce MTU because otherwise the receive window is the limiting factor
sender.cmd('ifconfig sender-eth0 mtu 200')
print "starting transmission of data to %s" % receiver_IP
sender.sendCmd('python sender.py --receiver=%s &> sender.out' %
receiver_IP)
print "waiting for transmission to complete"
sender.waitOutput()
print "killing tcpdump"
sender.cmd('killall tcpdump')
sleep(1)
print "killing tcpsink"
receiver.cmd("killall tcpsink")
net.stop()
def main():
mode = args.mode
topo = DiamondTopo(args.behavioral_exe, args.json, args.thrift_port,
args.pcap_dump, args.num_senders, args.num_rcvrs)
net = Mininet(topo=topo, host=P4Host, switch=P4Switch, controller=None)
net.start()
# takes in switch ID and port
def mac(i, j):
return "00:aa:bb:00:%02x:%02x" % (i - 1, j)
# takes in switch ID
def sw_ip(i):
return "10.%d.0.1" % (i)
num_senders = args.num_senders
num_rcvrs = args.num_rcvrs
sw_mac = [mac(1, n) for n in xrange(num_senders)]
sw_addr = ["10.0.%d.1" % n for n in xrange(num_senders)]
sw_mac2 = [mac(4, n) for n in xrange(num_rcvrs)]
sw_addr2 = ["10.0.%d.1" % (n + num_senders) for n in xrange(num_rcvrs)]
print 'Connecting hosts to s1...'
# Connect all hosts to s1
for n in xrange(num_senders):
h = net.get('h%d' % (n + 1))
h.setARP(sw_addr[n], sw_mac[n])
h.setDefaultRoute("dev eth0 via %s" % sw_addr[n])
for n in xrange(num_rcvrs):
h = net.get('h%d' % (num_rcvrs + n))
h.setARP(sw_addr2[n], sw_mac2[n])
h.setDefaultRoute("dev eth0 via %s" % sw_addr2[n])
net.get('s1').setARP(sw_ip(2), mac(2, 1))
net.get('s1').setARP(sw_ip(3), mac(3, 1))
net.get('s2').setARP(sw_ip(1), mac(1, num_senders))
net.get('s2').setARP(sw_ip(4), mac(4, num_rcvrs))
net.get('s3').setARP(sw_ip(1), mac(1, num_senders + 1))
net.get('s3').setARP(sw_ip(4), mac(4, num_rcvrs + 1))
net.get('s4').setARP(sw_ip(2), mac(2, 2))
net.get('s4').setARP(sw_ip(3), mac(3, 2))
sleep(1)
dumpNetConnections(net)
print "Ready !"
CLI(net)
net.stop()
def perfTest():
'''
This function runs only when executing the script with python: "sudo python <script_name>"
If instead the script is executed like "sudo mn --custom <script_name> ...."
then you can only use the options added to "topos" and "controllers" list, by specifying parameters to the "sudo mn" command.
'''
topo = MyTopo()
net = Mininet(topo=topo,controller=FLController,link=TCLink,listenPort=6634)
# specify the MAC addresses for the hosts and switches
hosts = net.hosts
hosts[0].setMAC("00:00:00:00:00:01", intf='h1-eth0')
hosts[1].setMAC("00:00:00:00:00:02", intf='h2-eth0')
hosts[2].setMAC("00:00:00:00:00:03", intf='h3-eth0')
switches = net.switches
switches[0].setMAC("00:00:00:01:00:01", intf='s1-eth1')
switches[0].setMAC("00:00:00:01:00:02", intf='s1-eth2')
switches[0].setMAC("00:00:00:01:00:03", intf='s1-eth3')
switches[0].setMAC("00:00:00:01:00:04", intf='s1-eth4')
switches[0].setMAC("00:00:00:01:00:05", intf='s1-eth5')
switches[1].setMAC("00:00:00:02:00:01", intf='s2-eth1')
switches[1].setMAC("00:00:00:02:00:02", intf='s2-eth2')
switches[2].setMAC("00:00:00:03:00:01", intf='s3-eth1')
switches[2].setMAC("00:00:00:03:00:02", intf='s3-eth2')
switches[3].setMAC("00:00:00:04:00:01", intf='s4-eth1')
switches[3].setMAC("00:00:00:04:00:02", intf='s4-eth2')
switches[4].setMAC("00:00:00:05:00:01", intf='s5-eth1')
switches[4].setMAC("00:00:00:05:00:02", intf='s5-eth2')
switches[5].setMAC("00:00:00:06:00:01", intf='s6-eth1')
switches[5].setMAC("00:00:00:06:00:02", intf='s6-eth2')
switches[5].setMAC("00:00:00:06:00:03", intf='s6-eth3')
switches[5].setMAC("00:00:00:06:00:04", intf='s6-eth4')
hosts[0].setIP('10.0.0.1/24',intf='h1-eth0')
hosts[1].setIP('10.0.0.2/24',intf='h2-eth0')
hosts[2].setIP('10.0.0.9/24',intf='h3-eth0')
net.start()
print "Dumping host connections"
dumpNodeConnections(net.hosts)
dumpNetConnections(net)
CLI(net)
net.stop()
def main():
num_hosts = args.num_hosts
mode = args.mode
topo = SingleSwitchTopo(args.behavioral_exe, args.json, args.thrift_port,
args.pcap_dump, num_hosts)
net = Mininet(topo=topo, host=P4Host, switch=DemoSwitch, controller=None)
net.start()
def sw_mac(n, p):
return "00:aa:bb:00:%02x:%02x" % (n, p)
def sw_addr(n):
return "10.0.%d.1" % n
h1 = net.get('h1')
h2 = net.get('h2')
h3 = net.get('h3')
h4 = net.get('h4')
h1.setARP(sw_addr(0), sw_mac(0, 0))
h1.setDefaultRoute("dev eth0 via %s" % sw_addr(0))
h2.setARP(sw_addr(1), sw_mac(1, 1))
h2.setDefaultRoute("dev eth0 via %s" % sw_addr(1))
h3.setARP(sw_addr(2), sw_mac(0, 1))
h3.setDefaultRoute("dev eth0 via %s" % sw_addr(2))
h4.setARP(sw_addr(3), sw_mac(1, 2))
h4.setDefaultRoute("dev eth0 via %s" % sw_addr(3))
s1 = net.get('s1')
print 's1-eth1 IP = %s' % s1.intf('s1-eth1').IP()
print 's1-eth2 IP = %s' % s1.intf('s1-eth2').IP()
for n in xrange(num_hosts):
h = net.get('h%d' % (n + 1))
h.describe()
sleep(5)
subprocess.call(
"~/behavioral-model/targets/simple_switch/sswitch_CLI < table_commands1.txt",
shell=True)
subprocess.call(
"~/behavioral-model/targets/simple_switch/sswitch_CLI --thrift-port 9091 < table_commands2.txt",
shell=True)
dumpNetConnections(net)
print "Ready !"
CLI(net)
net.stop()
def main():
"Create and run experiment"
start = time()
topo = SimpleTopo()
# create very simple mininet
net = Mininet(topo=topo, link=TCLink)
net.start()
# increase clients rwnd before anything else
increase_client_rwnd(net)
# test stuff before starting
cprint("*** Dumping network connections:", "green")
dumpNetConnections(net)
cprint("*** Testing connectivity", "blue")
net.pingAll()
# verify_latency(net)
sleep(2)
# verify_bandwidth(net)
if args.cli:
# Run CLI instead of experiment
CLI(net)
# start server
start_server(net)
#run simple experiment
run_simple_exp(net, args.numruns)
# client before and after to track changes
if args.cli:
# Run CLI instead of experiment
CLI(net)
# end the experiment, output stats
net.stop()
end = time()
cprint("Experiment took %.3f seconds" % (end - start), "yellow")
def main():
"Create and run experiment"
start = time()
topo = SimpleTopo()
# create very simple mininet
net = Mininet(topo=topo, link=TCLink)
net.start()
# increase clients rwnd before anything else
increase_client_rwnd(net)
# test stuff before starting
cprint("*** Dumping network connections:", "green")
dumpNetConnections(net)
cprint("*** Testing connectivity", "blue")
net.pingAll()
# verify_latency(net)
sleep(2)
# verify_bandwidth(net)
if args.cli:
# Run CLI instead of experiment
CLI(net)
# start server
start_server(net)
#run simple experiment
run_simple_exp(net, args.numruns)
# client before and after to track changes
if args.cli:
# Run CLI instead of experiment
CLI(net)
# end the experiment, output stats
net.stop()
end = time()
cprint("Experiment took %.3f seconds" % (end - start), "yellow")
def main():
"Create and run experiment"
start = time()
topo = MNTopo()
host = custom(CPULimitedHost, cpu=.15) # 15% of system bandwidth
link = custom(TCLink, max_queue_size=200)
net = Mininet(topo=topo, host=host, link=link)
net.start()
sender = net.getNodeByName('sender')
receiver = net.getNodeByName('receiver')
print('IP of sender:' + sender.IP())
print('IP of receiver:' + receiver.IP())
sender.sendCmd('ping -c 2 ' + receiver.IP())
result = sender.waitOutput()
print(result.strip())
print "*** Dumping network connections:"
dumpNetConnections(net)
print "*** Testing connectivity"
net.pingAll()
if args.cli:
# Run CLI instead of experiment
CLI(net)
else:
print "*** Running experiment"
# run_topology_experiment(net)
net.stop()
end = time()
os.system("killall -9 bwm-ng")
print "Experiment took %.3f seconds" % (end - start)
def main():
"Create and run experiment"
start = time()
m = args.n
topo = RingTopo(n=m)
host = custom(CPULimitedHost, cpu=.15) # 15% of system bandwidth
link = custom(TCLink,
bw=args.bw,
delay=args.delay,
loss=args.loss,
max_queue_size=200)
net = Mininet(topo=topo, host=host, link=link, controller=POXBridge)
net.start()
for i in range(m):
net.get('s%s' % (i + 1)).cmd(
'ovs-vsctl set bridge s%s stp-enable=true' % (i + 1))
print "start STP on s%s" % (i + 1)
print "sleep 30s for STP"
sleep(30)
print "wake up"
cprint("*** Dumping network connections:", "green")
dumpNetConnections(net)
cprint("*** Testing connectivity", "blue")
net.pingAll()
if args.cli:
# Run CLI instead of experiment
CLI(net)
else:
cprint("*** Running experiment", "magenta")
run_parkinglot_expt(net, n=m)
net.stop()
end = time()
os.system("killall -9 bwm-ng")
cprint("Experiment took %.3f seconds" % (end - start), "yellow")
def main():
"Create and run experiment"
start = time()
topo = DCellTopo()
host = custom(CPULimitedHost, cpu=.15) # 15% of system bandwidth
link = custom(TCLink, bw=args.bw, delay='1ms',
max_queue_size=20000)
net = Mininet(topo=topo, host=host, link=link, controller=RemoteController, autoStaticArp=True)
for i in range(1, 6):
for j in range(1, 5):
h = net.getNodeByName('h'+str(i)+str(j))
h.setMAC('00:0'+str(i)+':0'+str(j)+':00:00:00')
h.setIP('10.0.'+str(i)+'.'+str(j))
net.start()
print "*** Dumping network connections:"
dumpNetConnections(net)
print "***Run Controller."
c = raw_input("***Wait untill all switches are connected to controller then press Return...")
# print "*** Testing connectivity"
# net.pingAll()
if args.n == 1:
print "***Runing the link-node failure experiment"
run_DCell_link_node_failure(net)
elif args.n == 2:
print "***Runing the data transmission experiment"
run_DCell_data(net)
net.stop()
end = time()
os.system("killall -9 bwm-ng")
def main():
num_hosts = args.num_hosts
mode = args.mode
topo = SingleSwitchTopo(
args.behavioral_exe,
args.json,
args.thrift_port,
False, #args.pcap_dump,
num_hosts)
net = Mininet(topo=topo, host=P4Host, switch=DemoSwitch, controller=None)
net.start()
sw_mac = ["00:aa:bb:00:00:%02x" % n for n in xrange(num_hosts)]
sw_addr = ["10.0.%d.1" % n for n in xrange(num_hosts)]
for n in xrange(num_hosts):
h = net.get('h%d' % (n + 1))
if mode == "l2":
h.setDefaultRoute("dev eth0")
else:
h.setARP(sw_addr[n], sw_mac[n])
h.setDefaultRoute("dev eth0 via %s" % sw_addr[n])
s1 = net.get('s1')
print 's1-eth1 IP = %s' % s1.intf('s1-eth1').IP()
print 's1-eth2 IP = %s' % s1.intf('s1-eth2').IP()
for n in xrange(num_hosts):
h = net.get('h%d' % (n + 1))
h.describe()
sleep(1)
dumpNetConnections(net)
print "Ready !"
CLI(net)
net.stop()
def main():
k = int(args.n)
topo = FatTreeTopo(k=k)
host = custom(CPULimitedHost, cpu=.5) # 15% of system bandwidth
link = custom(TCLink, bw=args.bw, delay='.05ms',
max_queue_size=200)
net = Mininet(topo=topo, host=host, link=link, controller=RemoteController,autoSetMacs=True)
net.start()
print "*** Dumping network connections:"
dumpNetConnections(net)
raw_args = shlex.split("/home/ubuntu/pox/pox.py riplpox.riplpox --topo=ft,%s --routing=%s" % (k, args.routing))
proc = Popen(raw_args)
print "********************************************************"
print "*******************STARTED RIPLPOX**********************"
#This sleep 10 is to give the riplpox controller time to start up before you start sending. Seems to work well.
sleep(10)
#
# Actual Experiment
#
seconds = args.time
# Start the bandwidth and cwnd monitors in the background
monitor = Process(target=monitor_devs_ng,
args=('%s/bwm.txt' % args.dir, 1.0))
monitor.start()
start_tcpprobe()
# Get receiver and clients
recvr = net.getNodeByName('0_0_2')
sender1 = net.getNodeByName('0_0_3')
# Start the receiver
port = 5001
recvr.cmd('iperf -Z reno -s -p', port,
'> %s/iperf_server.txt' % args.dir, '&')
waitListening(sender1, recvr, port)
# TODO: start the sender iperf processes and wait for the flows to finish
# Hint: Use getNodeByName() to get a handle on each sender.
# Hint: Use sendCmd() and waitOutput() to start iperf and wait for them to finish
# iperf command to start flow: 'iperf -c %s -p %s -t %d -i 1 -yc > %s/iperf_%s.txt' % (recvr.IP(), 5001, seconds, args.dir, node_name)
# Hint (not important): You may use progress(t) to track your experiment progress
for p in range(k): # Pod Range
for e in range(2): # Edge range
for h in range(2, (k/2)+2): # Host Range
if p == 0 and e == 0:
continue
node_name = '_'.join(str(x) for x in [p, e, h])
sender = net.getNodeByName(node_name)
sender.sendCmd('iperf -Z reno -c %s -p %s -t %d -i 1 -yc > %s/iperf_%s.txt' % (recvr.IP(), 5001, seconds, args.dir, node_name))
for p in range(k): # Pod Range
for e in range(2): # Edge range
for h in range(2, (k/2)+2): # Host Range
if p == 0 and e == 0:
continue
node_name = '_'.join(str(x) for x in [p, e, h])
sender = net.getNodeByName(node_name)
sender.waitOutput()
recvr.cmd('kill %iperf')
# Shut down monitors
monitor.terminate()
stop_tcpprobe()
#Here just use p.terminate() to stop the process when you are done
net.stop()
proc.terminate()
def do_net(self, line):
"List network connections."
dumpNetConnections(self.mn)
def main():
k = int(args.n)
topo = FatTreeTopo(k=k)
host = custom(CPULimitedHost, cpu=.5) # 15% of system bandwidth
link = custom(TCLink, bw=args.bw, delay='.05ms', max_queue_size=200)
net = Mininet(topo=topo,
host=host,
link=link,
controller=RemoteController,
autoSetMacs=True)
net.start()
print "*** Dumping network connections:"
dumpNetConnections(net)
raw_args = shlex.split(
"/home/ubuntu/pox/pox.py riplpox.riplpox --topo=ft,%s --routing=%s" %
(k, args.routing))
proc = Popen(raw_args)
print "********************************************************"
print "*******************STARTED RIPLPOX**********************"
#This sleep 10 is to give the riplpox controller time to start up before you start sending. Seems to work well.
sleep(10)
#
# Actual Experiment
#
seconds = args.time
# Start the bandwidth and cwnd monitors in the background
monitor = Process(target=monitor_devs_ng,
args=('%s/bwm.txt' % args.dir, 1.0))
monitor.start()
start_tcpprobe()
# Get receiver and clients
recvr = net.getNodeByName('0_0_2')
sender1 = net.getNodeByName('0_0_3')
# Start the receiver
port = 5001
recvr.cmd('iperf -Z reno -s -p', port, '> %s/iperf_server.txt' % args.dir,
'&')
waitListening(sender1, recvr, port)
# TODO: start the sender iperf processes and wait for the flows to finish
# Hint: Use getNodeByName() to get a handle on each sender.
# Hint: Use sendCmd() and waitOutput() to start iperf and wait for them to finish
# iperf command to start flow: 'iperf -c %s -p %s -t %d -i 1 -yc > %s/iperf_%s.txt' % (recvr.IP(), 5001, seconds, args.dir, node_name)
# Hint (not important): You may use progress(t) to track your experiment progress
for p in range(k): # Pod Range
for e in range(2): # Edge range
for h in range(2, (k / 2) + 2): # Host Range
if p == 0 and e == 0:
continue
node_name = '_'.join(str(x) for x in [p, e, h])
sender = net.getNodeByName(node_name)
sender.sendCmd(
'iperf -Z reno -c %s -p %s -t %d -i 1 -yc > %s/iperf_%s.txt'
% (recvr.IP(), 5001, seconds, args.dir, node_name))
for p in range(k): # Pod Range
for e in range(2): # Edge range
for h in range(2, (k / 2) + 2): # Host Range
if p == 0 and e == 0:
continue
node_name = '_'.join(str(x) for x in [p, e, h])
sender = net.getNodeByName(node_name)
sender.waitOutput()
recvr.cmd('kill %iperf')
# Shut down monitors
monitor.terminate()
stop_tcpprobe()
#Here just use p.terminate() to stop the process when you are done
net.stop()
proc.terminate()
def perfTest():
'''
This function runs only when executing the script with python: "sudo python topo_one.py"
If instead the script is executed like "sudo mn --custom topo_one.py ...." then you can only use the options added to "topos" and "controllers" list, by specifying parameters to the "sudo mn" command.
'''
web1="""<!doctype html><html lang=\"en\"><head> <meta charset=\"utf-8\"> <title>VPN 1</title>
<meta name=\"description\" content=\"Website of VPN1\"> <meta name=\"author\" content=\"Eder Ollora Zaballa\">
</head><body> <p>Connected to VPN 1</p></body></html>"""
web2="""<!doctype html><html lang=\"en\"><head> <meta charset=\"utf-8\"> <title>VPN 2</title>
<meta name=\"description\" content=\"Website of VPN 2\"> <meta name=\"author\" content=\"Eder Ollora Zaballa\">
</head><body> <p>Connected to VPN 2</p></body></html>"""
topo = MyTopo()
net = Mininet(topo=topo,controller=FLController,link=TCLink, listenPort=6634)
switchInterfaces = [3,4,3,4,5,3,4,3,2]
hostInterfaces = [1,1,1]
"""hostIPs = [
'10.0.0.1/24',
'10.0.0.2/24',
'192.168.1.3/24',
'10.0.0.2/24',
'192.168.1.5/24'
]"""
hostIPs = [
'10.0.0.1/24',
'10.0.0.2/24',
'10.0.0.2/24'
]
hosts = net.hosts
for i,numOfIntfs in enumerate(hostInterfaces):
for j in range(1,numOfIntfs+1):
if(i==1 or i==2):
hosts[i].setMAC('00:00:00:00:0'+str(2)+':0'+str(j), intf='h'+str(i+1)+'-eth'+str(j-1))
else:
hosts[i].setMAC('00:00:00:00:0'+str(i+1)+':0'+str(j), intf='h'+str(i+1)+'-eth'+str(j-1))
#intf = host.defaultIntf()
hosts[i].setIP(hostIPs[i])
#host.cmdPrint('ifconfig')
#host.setDefaultRoute(intf)
#host.cmdPrint('route')
switches = net.switches
for i,numOfIntfs in enumerate(switchInterfaces):
for intf in range(1,numOfIntfs+1):
# +1 because we want to include last number (intfs 1 to 5, include as index 5).
# and +1 because we need 1 more for controller
#print('s'+str(i+1)+'-eth'+str(intf))
switches[i].setMAC('00:00:00:0'+str(i+1)+':00:0'+str(intf), intf='s'+str(i+1)+'-eth'+str(intf))
net.start()
print "Dumping host connections"
dumpNodeConnections(net.hosts)
dumpNetConnections(net)
#hosts[1].cmd('mkdir www')
hosts[1].cmd('cd www')
#hosts[1].cmd('echo \"'+web2+'\" > index.html')
hosts[1].cmd('python -m SimpleHTTPServer 80 &')
#hosts[2].cmd('mkdir www2')
hosts[2].cmd('cd www2')
#hosts[2].cmd('echo \"'+web1+'\" > index.html')
hosts[2].cmd('python -m SimpleHTTPServer 80 &')
CLI(net)
net.stop()
h3.setARP(ip='172.16.0.254', mac='00:00:00:00:44:44')
h3.cmdPrint('cd vm3 && sudo python -m SimpleHTTPServer 80 &')
h4 = net.getNodeByName('h_vm4')
h4.cmdPrint('route add default gw 172.16.0.254 h_vm4-eth0')
h4.setARP(ip='172.16.0.254', mac='00:00:00:00:55:55')
h4.cmdPrint('cd vm4 && sudo python -m SimpleHTTPServer 80 &')
os.system("ovs-vsctl del-controller northbound")
os.system("ovs-vsctl del-controller southbound")
os.system("sudo ovs-vsctl add-port main to_northbound -- "
"set interface to_northbound type=patch ofport_request=1 "
"option:peer=to_main -- "
"add-port northbound to_main -- "
"set interface to_main type=patch "
"option:peer=to_northbound")
os.system("sudo ovs-vsctl add-port main to_southbound -- "
"set interface to_southbound type=patch ofport_request=2 "
"option:peer=to_main2 -- "
"add-port southbound to_main2 -- "
"set interface to_main2 type=patch "
"option:peer=to_southbound")
os.system("ovs-ofctl add-flows northbound northbound_flows.txt")
os.system("ovs-ofctl add-flows southbound southbound_flows.txt")
dumpNetConnections(net)
CLI(net)
net.stop()
def main(duration_sec,
delay_sec,
delay_ms,
cc_alg,
results_path,
interactive=False,
use_linux_router=True,
use_asym=False):
topo = DumbbellTopo(delay_ms=delay_ms,
use_linux_router=use_linux_router,
use_asym=use_asym)
net = Mininet(topo=topo, link=TCLink, autoStaticArp=True)
net.start()
try:
if use_asym:
# Update our access router interfaces to limit their transmit speeds to only 252 Mbps. Note that
# this has to come after we start the network because during testing it seemed that net.start()
# reloaded the original bandwidth that was set when the associated link was first created.
ars = (net["ar1"], net["ar2"])
ar_neighbors = ((net["s1"], net["s2"], net["bb1"]),
(net["r1"], net["r2"], net["bb2"]))
for ar, neighbors in izip(ars, ar_neighbors):
for neighbor in neighbors:
# This basically returns a list of pairs where for each pair the first item is the
# interface on self and the second item is the interface on the node passed to
# connectionsTo.
#
# According to the NIST study, bandwidth on the access router interfaces is 252 Mbps and
# queue size is 20% of bandwidth delay product.
#
ar_iface, _ = ar.connectionsTo(neighbor)[0]
ar_iface.config(
bw=DumbbellTopo.ACCESS_ROUTER_BANDWIDTH_MBPS,
max_queue_size=topo.access_router_queue_size)
# TCLink ignores any sort of IP address we might specify for non-default interfaces when we are
# creating links via Topo.addLink. This reassigns the addresses we want for those interfaces on
# our backbone routers. We also add routing rules to each backbone router so that each router
# can forward traffic to the subnet they are not directly connected to.
if use_linux_router:
net["bb1"].intf("bb1-eth1").setIP("10.0.1.1/24")
net["bb2"].intf("bb2-eth1").setIP("10.0.2.1/24")
net["bb1"].cmd(
"route add -net 10.0.2.0 netmask 255.255.255.0 gw 10.0.0.2 dev bb1-eth0"
)
net["bb2"].cmd(
"route add -net 10.0.1.0 netmask 255.255.255.0 gw 10.0.0.1 dev bb2-eth0"
)
info("Dumping host connections\n")
dumpNodeConnections(net.hosts)
info("Dumping net connections\n")
dumpNetConnections(net)
# Get rid of initial delay in network.
net.pingAll()
if interactive:
CLI(net)
else:
# Restart tcp_probe.
print "Restarting tcp_probe"
subprocess.call('modprobe -r tcp_probe', shell=True)
subprocess.call('modprobe tcp_probe full=1', shell=True)
read_tcp_probe_command = 'dd if=/proc/net/tcpprobe of=%s' % results_path
subprocess.call('%s &' % read_tcp_probe_command, shell=True)
try:
# Run one iperf stream between r1 and s1 and another between r2 and s2.
print "Running iperf tests"
print "Sender 1 duration: %d" % duration_sec
print "Sender 2 duration: %d" % (duration_sec - delay_sec)
print "Sender 2 delay: %d" % delay_sec
r1_output = "r1-output-%d-%s.txt" % (delay_ms, cc_alg)
r2_output = "r2-output-%d-%s.txt" % (delay_ms, cc_alg)
s1_output = "s1-output-%d-%s.txt" % (delay_ms, cc_alg)
s2_output = "s2-output-%d-%s.txt" % (delay_ms, cc_alg)
# 1500 == MTU.
#iperf_window = DumbbellTopo.ACCESS_ROUTER_BANDWIDTH_PPMS * delay_ms * 1500
iperf_window = DumbbellTopo.HOST_BANDWIDTH_PPMS * delay_ms * 1500
print "Iperf window (bytes): %d" % iperf_window
net["r1"].sendCmd('iperf -s -p 5001 -w %d &> %s' %
(iperf_window, r1_output))
net["r2"].sendCmd('iperf -s -p 5002 -w %d &> %s' %
(iperf_window, r2_output))
net["s1"].sendCmd(
'iperf -c %s -p 5001 -i 1 -w %d -t %d -Z %s &> %s' %
(net["r1"].IP(), iperf_window, duration_sec, cc_alg,
s1_output))
# Delay the second sender by a certain amount and then start it.
time.sleep(delay_sec)
net["s2"].sendCmd(
'iperf -c %s -p 5002 -i 1 -w %d -t %d -Z %s &> %s' %
(net["r2"].IP(), iperf_window, duration_sec - delay_sec,
cc_alg, s2_output))
# Wait for all iperfs to close. On server side, we need to send sentinel to output for
# waitOutput to return.
net["s2"].waitOutput()
net["s1"].waitOutput()
net["r2"].sendInt()
net["r2"].waitOutput()
net["r1"].sendInt()
net["r1"].waitOutput()
print "Completed iperf tests"
finally:
# Stop tcp_probe.
print "Stopping tcp_probe"
subprocess.call('pkill -f "%s"' % read_tcp_probe_command,
shell=True)
subprocess.call('modprobe -r tcp_probe', shell=True)
finally:
net.stop()
def main():
host = custom(CPULimitedHost, cpu=.15) # 15% of system bandwidth
link = custom(TCLink, max_queue_size=500)
#net = Mininet(host=host, link=link, controller=RemoteController, switch=OVSKernelSwitch)
net = Mininet(host=host, link=link, controller=DefaultController, switch=OVSKernelSwitch)
print "*** Creating controllers"
#c1 = RemoteController('c1', ip='127.0.0.1', port=6633)
#c2 = RemoteController('c2', ip='127.0.0.1', port=6634)
#c1 = net.addController('c1', controller=RemoteController, ip="127.0.0.1", port=6633)
#c2 = net.addController('c2', controller=RemoteController, ip="127.0.0.1", port=6634)
c1 = net.addController('c1')
c2 = net.addController('c2')
print "*** Creating switches"
s1 = net.addSwitch('s1')
s2 = net.addSwitch('s2')
# Create data transfer machines (DTMs)
print "*** Creating hosts"
hostConfig = {'cpu': .25}
dtm1 = net.addHost('sender', ip='10.0.0.1', **hostConfig)
dtm2 = net.addHost('receiver', ip='10.0.0.2', **hostConfig)
# Add network links
print "*** Adding links"
linkConfig = {'bw': args.bw, 'delay': '5ms', 'loss': 0, 'max_queue_size': None}
net.addLink(dtm1, s1, **linkConfig)
net.addLink(s1, s2, **linkConfig)
net.addLink(s2, dtm2, **linkConfig)
# Build the network and start experiment
print "\n*** Building the network"
net.build()
# c1.start()
# c2.start()
s1.start([ c1 ])
s2.start([ c2 ])
net.start()
start = time()
print "*** Dumping network connections:"
dumpNetConnections(net)
print "*** Testing connectivity"
net.pingAll()
if args.cli:
# Run CLI instead of experiment
CLI(net)
else:
iperf_experiment(net)
transfer_experiment(net, "scp")
end = time()
net.stop()
print "Experiment took %.3f seconds" % (end - start)
def figure5(graph_num):
"Create and run RTT/bandwidth/BDP experiments, as in figure 5"
start = time()
abs_improvs = []
pct_improvs = []
variables = []
title = 'Figure %d' % graph_num
filename = 'figure%d' % graph_num
x_units = 'x units'
y_units = 'y units'
if graph_num == 1:
x_units = 'RTT (ms)'
y_units = 'Improvement (ms)'
variables = [20, 50, 100, 200, 500, 1000, 3000]
elif graph_num == 2:
x_units = 'Bandwidth (kbps)'
y_units = 'Improvement (ms)'
variables = [56, 256, 512, 1000, 2000, 3000, 5000, 10000]
#variables = [3000, 5000, 10000]
elif graph_num == 3:
x_units = 'BDP (bytes)'
y_units = 'Improvement (ms)'
# tuples are (B/W (KiloBytes per second), RTT (ms))
# The paper says BDP is in bytes, so it must be the case that its KB
variables = [(20, 50), (50, 100), (100, 100), (250, 200), (250, 400)]
#variables = [(50, 100), (100, 100), (250, 200), (250, 400)]
elif graph_num == 4:
variables = [1] #dummy var
for var in variables:
if graph_num == 1:
cprint("Testing network with a RTT of %s" % var, "blue")
topo = SimpleTopo(delay='%dms' % (var/2))
elif graph_num == 2:
cprint("Testing network with bottleneck bandwidth of %f kbps" % var, "blue")
topo = SimpleTopo(bw = var/1000.0)
elif graph_num == 3:
cprint("Testing network with bottleneck bandwidth of %f kbps" % var[0], "blue")
cprint("and a RTT of %d ms" % var[1], "blue")
delay = "%dms" % (var[1]/2)
topo = SimpleTopo(bw = var[0]/125.0, delay=delay) #make sure its KBps, not Kbps
elif graph_num == 4:
topo = SimpleTopo() #use default args
# create very simple mininet
net = Mininet(topo=topo, link=TCLink)
net.start()
# increase clients rwnd before anything else
increase_client_rwnd(net)
if args.cli:
# Run CLI before experiment
CLI(net)
# test stuff before starting
cprint("*** Dumping network connections:", "green")
dumpNetConnections(net)
cprint("*** Testing connectivity", "blue")
net.pingAll()
# start server
start_server(net)
# run experiement
if graph_num == 4:
run_figure7_exp(net, args.numruns)
return # terminate experiment
else:
(abs_i, pct_i) = run_simple_exp(net, args.numruns)
# end this instance of mininet
net.stop()
abs_improvs.append(abs_i)
pct_improvs.append(pct_i)
end = time()
cprint("Experiment took %.3f seconds" % (end - start), "yellow")
# fixup the bdp x-axis before we graph if we are testing bdp
if graph_num == 3:
variables = [1000, 5000, 10000, 50000, 100000]
save_graph(variables, abs_improvs, pct_improvs, title, x_units, y_units,filename)
def figure5(graph_num):
"Create and run RTT/bandwidth/BDP experiments, as in figure 5"
start = time()
abs_improvs = []
pct_improvs = []
variables = []
title = 'Figure %d' % graph_num
filename = 'figure%d' % graph_num
x_units = 'x units'
y_units = 'y units'
if graph_num == 1:
x_units = 'RTT (ms)'
y_units = 'Improvement (ms)'
variables = [20, 50, 100, 200, 500, 1000, 3000]
elif graph_num == 2:
x_units = 'Bandwidth (kbps)'
y_units = 'Improvement (ms)'
variables = [56, 256, 512, 1000, 2000, 3000, 5000, 10000]
#variables = [3000, 5000, 10000]
elif graph_num == 3:
x_units = 'BDP (bytes)'
y_units = 'Improvement (ms)'
# tuples are (B/W (KiloBytes per second), RTT (ms))
# The paper says BDP is in bytes, so it must be the case that its KB
variables = [(20, 50), (50, 100), (100, 100), (250, 200), (250, 400)]
#variables = [(50, 100), (100, 100), (250, 200), (250, 400)]
elif graph_num == 4:
variables = [1] #dummy var
for var in variables:
if graph_num == 1:
cprint("Testing network with a RTT of %s" % var, "blue")
topo = SimpleTopo(delay='%dms' % (var / 2))
elif graph_num == 2:
cprint(
"Testing network with bottleneck bandwidth of %f kbps" % var,
"blue")
topo = SimpleTopo(bw=var / 1000.0)
elif graph_num == 3:
cprint(
"Testing network with bottleneck bandwidth of %f kbps" %
var[0], "blue")
cprint("and a RTT of %d ms" % var[1], "blue")
delay = "%dms" % (var[1] / 2)
topo = SimpleTopo(bw=var[0] / 125.0,
delay=delay) #make sure its KBps, not Kbps
elif graph_num == 4:
topo = SimpleTopo() #use default args
# create very simple mininet
net = Mininet(topo=topo, link=TCLink)
net.start()
# increase clients rwnd before anything else
increase_client_rwnd(net)
if args.cli:
# Run CLI before experiment
CLI(net)
# test stuff before starting
cprint("*** Dumping network connections:", "green")
dumpNetConnections(net)
cprint("*** Testing connectivity", "blue")
net.pingAll()
# start server
start_server(net)
# run experiement
if graph_num == 4:
run_figure7_exp(net, args.numruns)
return # terminate experiment
else:
(abs_i, pct_i) = run_simple_exp(net, args.numruns)
# end this instance of mininet
net.stop()
abs_improvs.append(abs_i)
pct_improvs.append(pct_i)
end = time()
cprint("Experiment took %.3f seconds" % (end - start), "yellow")
# fixup the bdp x-axis before we graph if we are testing bdp
if graph_num == 3:
variables = [1000, 5000, 10000, 50000, 100000]
save_graph(variables, abs_improvs, pct_improvs, title, x_units, y_units,
filename)