def start(ip="127.0.0.1",port=6633):
ctrlr = lambda n: RemoteController(n, ip=ip, port=port, inNamespace=False)
net = Mininet(switch=OVSSwitch, controller=ctrlr, autoStaticArp=False)
c1 = net.addController('c1')
topo = SingleSwitchTopo(2)
net.buildFromTopo( topo )
# Set up logging etc.
lg.setLogLevel('info')
lg.setLogLevel('output')
# Start the network
net.start()
# Fork off Frenetic process
frenetic_proc = Popen(['/home/vagrant/src/frenetic/frenetic.native', 'http-controller'])
# And fork off application
app_proc = Popen(['/usr/bin/python2.7/python','/home/vagrant/manual/programmers_guide/code/quick_start/repeater.py'])
output("Pingall returned "+str(net.pingAll()))
frenetic_proc.kill()
app_proc.kill()
def test_pingall(topology):
Network = Mininet()
Network.buildFromTopo(topology)
Network.start()
result = Network.pingAll()
Network.stop()
if result == 0:
return True
else:
return False
def pingall_test(folder, exe, topo=SingleSwitchTopo(4), custom_topo=None, custom_test=None, expect_pct=0):
ip="127.0.0.1"
port=6633
if not VERBOSE:
lg.setLogLevel('critical')
ctrlr = lambda n: RemoteController(n, ip=ip, port=port, inNamespace=False)
net = Mininet(switch=OVSSwitch, controller=ctrlr, autoStaticArp=False,cleanup=True)
c1 = net.addController('c1')
if custom_topo:
custom_topo.build(net)
else:
net.buildFromTopo(topo)
# Start the network
net.start()
# Fork off Frenetic process
devnull = None if VERBOSE else open(os.devnull, 'w')
frenetic_proc = Popen(
['/home/vagrant/src/frenetic/frenetic.native', 'http-controller','--verbosity','debug'],
stdout=devnull, stderr=devnull
)
# Wait a few seconds for frenetic to initialize, otherwise
time.sleep(5)
# And fork off application
app_proc = Popen(
['/usr/bin/python2.7',exe],
stdout=devnull, stderr=devnull, cwd=CODE_ROOT+folder
)
if custom_test:
got_pct = int(custom_test(net))
else:
got_pct = int(net.pingAll())
expected_msg = " expected "+str(expect_pct)+"% dropped got "+str(got_pct)+"% dropped"
print exe + ("...ok" if expect_pct==got_pct else expected_msg)
frenetic_proc.kill()
app_proc.kill()
# Ocassionally shutting down the network throws an error, which is superfluous because
# the net is already shut down. So ignore.
try:
net.stop()
except OSError:
pass
def main():
t = TorusTopo(3, 3)
# t = TreeTopo(3,3)
prot = "OpenFlow13"
net = Mininet()
# net = Mininet(controller=RemoteController)
c0 = net.addController('c0',
controller=RemoteController,
ip='192.168.31.158',
port=6653)
net.buildFromTopo(t)
topo = {}
for link in t.links():
info = t.linkInfo(link[0], link[1])
n1 = info['node1']
n2 = info['node2']
p1 = info['port1']
p2 = info['port2']
t1 = int(net.getNodeByName(n1).dpid, 16) if t.isSwitch(n1) else 'host'
t2 = int(net.getNodeByName(n2).dpid, 16) if t.isSwitch(n2) else 'host'
if t1 != 'host':
m1 = topo.setdefault(t1, {})
m1[p1] = t2
if t2 != 'host':
m1 = topo.setdefault(t2, {})
m1[p2] = t1
hosts = t.hosts()
switches = t.switches()
def make_igmp_host(ho, hn):
ho.cmd('route add -net 224.0.0.0 netmask 224.0.0.0 ' + hn + '-eth0')
for hn in hosts:
ho = net.get(hn)
make_igmp_host(ho, hn)
with open('topo.json', 'w') as f:
dump(topo, f)
net.build()
net.start()
for sn in switches:
net.get(sn).cmd('ovs-vsctl set bridge ' + sn + ' protocols=OpenFlow13')
CLI(net)
net.stop()
def runMininet(protocols, controller, topo, topo_arg, ovs_switch, pattern):
# If no arguments passed, set the default values
if protocols == None: protocols = "OpenFlow13"
if controller == None: controller = ["127.0.0.1"]
if topo == None: topo = "SwitchTopo"
if topo_arg == None: topo_arg = [1]
if ovs_switch == None: ovs_switch = "OVSSwitch"
if pattern == None: pattern = "xscxx"
# Create topology
cur_topo = getattr(topology, topo)(*topo_arg)
# Get switch type
cur_switch = partial(getattr(switch, ovs_switch), protocols=protocols)
# Prepare mininet
net = None
# Execute pattern
delay = ""
for c in pattern:
if c == 's':
# Create mininet object
net = Mininet(switch=cur_switch, controller=None)
net.buildFromTopo(cur_topo)
# Create and add controllers
for i, address in enumerate(controller):
net.addController(
RemoteController('c{0}'.format(i), address, 6653))
# Start connections to controllers
net.start()
elif c == 'c':
if net != None: CLI(net)
elif c == 'x':
if net != None:
net.stop()
net = None
else:
cleanup()
elif c.isdigit():
delay += c
elif c == 'd':
if delay == "": delay = "1"
print("*** Waiting " + delay + " seconds")
sleep(float(delay))
delay = ""
def mnScript():
"Creating a Mininet net"
net = Mininet( controller=RemoteController, switch=OVSKernelSwitch, autoSetMacs=True, listenPort=7001 )
topo = MyTopo()
#Build and Start
net.buildFromTopo( topo )
net.start()
print "*** Starting Group ***"
print "*** Socket"
s = initsocket()
request = Request()
request.id = 1
request.action = request.ACTION.GET_GROUP
#request.action = request.ACTION.GET_COMPLETE_GROUP
s.send (request.toJson() )
jsonStr = s.recv()
print "*** Group"
group = GroupFactory().decodeJson(jsonStr)
src = net.nameToNode[ "h" + str(group.source) ]
print "*** Setup CA:FE ARP in source:", src.name
src.cmd("arp -s 10.0.2.254 ca:fe:ca:fe:ca:fe")
print "*** Start udpapp in source( " + src.name + " ) manually ;)"
#src.cmd("udpapp -m &")
for host in group.hosts:
if host.id != group.source:
h = net.nameToNode[ "h" + str(host.id) ]
print "*** Setup CA:FE ARP in " + h.name
h.cmd("arp -s 10.0.2.254 ca:fe:ca:fe:ca:fe")
print "*** Starting udpapp in " + h.name
#h.cmd("udpapp -c " + h.name + " &")
#sleep( 1 )
print "*** Starting CLI ***"
CLI( net )
print "*** Stopping net ***"
net.stop()
def mnScript():
"Creating a Mininet net"
net = Mininet( controller=RemoteController, switch=OVSKernelSwitch, autoSetMacs=True, listenPort=6634 )
print "*** Creating Remote Controller"
c0 = net.addController( 'c0' )
topo = MyTopo()
#Build and Start
net.buildFromTopo( topo )
net.start()
print "*** Starting Group ***"
print "*** Socket"
s = initsocket()
request = Request()
request.id = 1
request.action = request.ACTION.GET_GROUP
s.send (request.toJson() )
jsonStr = s.recv()
print "*** Group"
group = GroupFactory().decodeJson(jsonStr)
src = net.nameToNode[ "h" + str(group.source) ]
print "*** Setup CA:FE ARP in source"
src.cmd("arp -s 10.0.2.254 ca:fe:ca:fe:ca:fe")
print "*** Starting udpapp in source"
cmdThread( src, "echo blah > /home/openflow/htest" ) #"udpapp -m > " + src.name + ".log" )
for host in group.hosts:
h = net.nameToNode[ "h" + str(host.id) ]
print "*** Setup CA:FE ARP in " + h.name
h.cmd("arp -s 10.0.2.254 ca:fe:ca:fe:ca:fe")
print "*** Starting udpapp in " + h.name
cmdThread( h, "ping 10.0.0.1 > " + h.name + ".log") #"udpapp -c > " + h.name + ".log" )
print "*** Starting CLI ***"
CLI( net )
print "*** Stopping net ***"
net.stop()
def runJellyfishLink(remote_control=False):
'''
Create and run jellyfish network
'''
topo = JellyTopo(
N=2,
n=2,
r=2,
# topo = JellyTopo(N=3, n=3, r=3,
# topo = JellyTopo(N=10, n=10, r=5,
# topo = JellyTopo(N=5, n=4, r=3,
graph_constructor=create_irregular_jellyfish_graph,
verbose=True)
if remote_control:
net = Mininet(topo=None, build=False, host=CPULimitedHost, link=TCLink)
net.addController('c0',
controller=RemoteController,
ip='127.0.0.1',
port=6633)
net.buildFromTopo(topo)
else:
net = Mininet(topo=topo,
host=CPULimitedHost,
link=TCLink,
controller=JELLYPOX)
print "Dumping switch connections"
dumpNodeConnections(net.switches)
# dhcp_script = create_dhcp_file(topo)
# pdb.set_trace()
net.start()
# for i, h in enumerate(net.hosts):
# h.cmd('dhclient eth0')
# CLI(net, script=dhcp_script)
CLI(net)
net.stop()
def buildFromTopo(self, *args, **kwargs):
"Start network"
info('*** Placing nodes\n')
self.placeNodes()
info('\n')
Mininet.buildFromTopo(self, *args, **kwargs)
self.addLink(node, child)
else:
node = self.addHost("h%s" % self.hostNum)
self.hostNum += 1
return node
if __name__ == "__main__":
setLogLevel("info")
topo = TreeTopo(depth=3, fanout=2)
network = Mininet(switch=OVSKernelSwitch, controller=RemoteController)
c0 = network.addController("c0", controller=RemoteController, ip="192.168.56.101", port=6633)
network.buildFromTopo(topo)
h1, h2, h3, h4, h5, h6, h7, h8 = network.getNodeByName("h1", "h2", "h3", "h4", "h5", "h6", "h7", "h8")
network.start()
h1.cmd("iperf -s -u &")
h8.cmd("iperf -c 10.0.0.1 -u -t 100 -b 10M &")
h2.cmd("iperf -s -u &")
h7.cmd("iperf -u -c 10.0.0.2 -t 100 -b 10M &")
h3.cmd("iperf -s -u &")
h6.cmd("iperf -u -c 10.0.0.3 -t 100 -b 10M &")
h4.cmd("iperf -s -u &")
h5.cmd("iperf -u -c 10.0.0.4 -t 100 -b 40M &")
# network.run( CLI, network )
CLI(network)
if __name__ == '__main__':
fname = "../samples/ExNetwithLoops1A.json" # You can put your default file here
remoteIP = "192.168.1.134" # Put your default remote IP here
# Using the nice Python argparse library to take in optional arguments
# for file name and remote controller IP address
parser = argparse.ArgumentParser()
parser.add_argument("-f", "--fname", help="network graph file name")
parser.add_argument("-ip",
"--remote_ip",
help="IP address of remote controller")
args = parser.parse_args()
if not args.fname:
print "fname not specified using: {}".format(fname)
else:
fname = args.fname
if not args.remote_ip:
print "remote controller IP not specified using: {}".format(remoteIP)
else:
remoteIP = args.remote_ip
topo = GraphTopoFixedAddrPorts.from_file(fname)
lg.setLogLevel('info')
network = Mininet(controller=RemoteController,
autoStaticArp=True,
link=TCLink)
network.addController(controller=RemoteController, ip=remoteIP)
network.buildFromTopo(topo=topo)
network.start()
CLI(network)
network.stop()
def buildFromTopo( self, *args, **kwargs ):
"Start network"
info( '*** Placing nodes\n' )
self.placeNodes()
info( '\n' )
Mininet.buildFromTopo( self, *args, **kwargs )
def pingall_test(folder,
exe,
topo=SingleSwitchTopo(4),
custom_topo=None,
custom_test=None,
expect_pct=0):
ip = "127.0.0.1"
port = 6633
if not VERBOSE:
lg.setLogLevel('critical')
ctrlr = lambda n: RemoteController(n, ip=ip, port=port, inNamespace=False)
net = Mininet(switch=OVSSwitch,
controller=ctrlr,
autoStaticArp=False,
cleanup=True)
c1 = net.addController('c1')
if custom_topo:
custom_topo.build(net)
else:
net.buildFromTopo(topo)
# Start the network
net.start()
# Fork off Frenetic process
devnull = None if VERBOSE else open(os.devnull, 'w')
frenetic_proc = Popen([
'/home/vagrant/src/frenetic/frenetic.native', 'http-controller',
'--verbosity', 'debug'
],
stdout=devnull,
stderr=devnull)
# Wait a few seconds for frenetic to initialize, otherwise
time.sleep(5)
# And fork off application
app_proc = Popen(['/usr/bin/python2.7', exe],
stdout=devnull,
stderr=devnull,
cwd=CODE_ROOT + folder)
if custom_test:
got_pct = int(custom_test(net))
else:
got_pct = int(net.pingAll())
expected_msg = " expected " + str(expect_pct) + "% dropped got " + str(
got_pct) + "% dropped"
print exe + ("...ok" if expect_pct == got_pct else expected_msg)
frenetic_proc.kill()
app_proc.kill()
# Ocassionally shutting down the network throws an error, which is superfluous because
# the net is already shut down. So ignore.
try:
net.stop()
except OSError:
pass
