def run():
"Create control and data networks, and invoke the CLI"
info('* Creating Control Network\n')
ctopo = ControlNetwork(n=4, dataController=DataController)
cnet = Mininet(topo=ctopo, ipBase='192.168.123.0/24', controller=None)
info('* Adding Control Network Controller\n')
cnet.addController('cc0', controller=Controller)
info('* Starting Control Network\n')
cnet.start()
info('* Creating Data Network\n')
topo = TreeTopo(depth=2, fanout=2)
# UserSwitch so we can easily test failover
sw = partial(UserSwitch, opts='--inactivity-probe=1 --max-backoff=1')
net = Mininet(topo=topo, switch=sw, controller=None)
info('* Adding Controllers to Data Network\n')
for host in cnet.hosts:
if isinstance(host, Controller):
net.addController(host)
info('* Starting Data Network\n')
net.start()
mn = MininetFacade(net, cnet=cnet)
CLI(mn)
info('* Stopping Data Network\n')
net.stop()
info('* Stopping Control Network\n')
cnet.stop()
def intfOptions():
"run various traffic control commands on a single interface"
net = Mininet(autoStaticArp=True)
net.addController('c0')
h1 = net.addHost('h1')
h2 = net.addHost('h2')
s1 = net.addSwitch('s1')
link1 = net.addLink(h1, s1, cls=TCLink)
net.addLink(h2, s1)
net.start()
# flush out latency from reactive forwarding delay
net.pingAll()
info('\n*** Configuring one intf with bandwidth of 5 Mb\n')
link1.intf1.config(bw=5)
info('\n*** Running iperf to test\n')
net.iperf()
info('\n*** Configuring one intf with loss of 50%\n')
link1.intf1.config(loss=50)
info('\n')
net.iperf((h1, h2), l4Type='UDP')
info('\n*** Configuring one intf with delay of 15ms\n')
link1.intf1.config(delay='15ms')
info('\n*** Run a ping to confirm delay\n')
net.pingPairFull()
info('\n*** Done testing\n')
net.stop()
def emptyNet():
"Create an empty network and add nodes to it."
net = Mininet(controller=Controller)
info('*** Adding controller\n')
net.addController('c0')
info('*** Adding hosts\n')
h1 = net.addHost('h1', ip='10.0.0.1')
h2 = net.addHost('h2', ip='10.0.0.2')
info('*** Adding switch\n')
s3 = net.addSwitch('s3')
info('*** Creating links\n')
net.addLink(h1, s3)
net.addLink(h2, s3)
info('*** Starting network\n')
net.start()
info('*** Running CLI\n')
CLI(net)
info('*** Stopping network')
net.stop()
def testPortNumbering():
"""Test port numbering:
Create a network with 5 hosts (using Mininet's
mid-level API) and check that implicit and
explicit port numbering works as expected."""
net = Mininet(controller=Controller)
info('*** Adding controller\n')
net.addController('c0')
info('*** Adding hosts\n')
h1 = net.addHost('h1', ip='10.0.0.1')
h2 = net.addHost('h2', ip='10.0.0.2')
h3 = net.addHost('h3', ip='10.0.0.3')
h4 = net.addHost('h4', ip='10.0.0.4')
h5 = net.addHost('h5', ip='10.0.0.5')
info('*** Adding switch\n')
s1 = net.addSwitch('s1')
info('*** Creating links\n')
# host 1-4 connect to ports 1-4 on the switch
net.addLink(h1, s1)
net.addLink(h2, s1)
net.addLink(h3, s1)
net.addLink(h4, s1)
# specify a different port to connect host 5 to on the switch.
net.addLink(h5, s1, port1=1, port2=9)
info('*** Starting network\n')
net.start()
# print the interfaces and their port numbers
info('\n*** printing and validating the ports '
'running on each interface\n')
for intfs in s1.intfList():
if not intfs.name == "lo":
info(intfs, ': ', s1.ports[intfs], '\n')
info('Validating that', intfs, 'is actually on port',
s1.ports[intfs], '... ')
if validatePort(s1, intfs):
info('Validated.\n')
print '\n'
# test the network with pingall
net.pingAll()
print '\n'
info('*** Stopping network')
net.stop()
def testRemoteNet( remote='ubuntu2' ):
"Test remote Node classes"
print '*** Remote Node Test'
net = Mininet( host=RemoteHost, switch=RemoteOVSSwitch,
link=RemoteLink )
c0 = net.addController( 'c0' )
# Make sure controller knows its non-loopback address
Intf( 'eth0', node=c0 ).updateIP()
print "*** Creating local h1"
h1 = net.addHost( 'h1' )
print "*** Creating remote h2"
h2 = net.addHost( 'h2', server=remote )
print "*** Creating local s1"
s1 = net.addSwitch( 's1' )
print "*** Creating remote s2"
s2 = net.addSwitch( 's2', server=remote )
print "*** Adding links"
net.addLink( h1, s1 )
net.addLink( s1, s2 )
net.addLink( h2, s2 )
net.start()
print 'Mininet is running on', quietRun( 'hostname' ).strip()
for node in c0, h1, h2, s1, s2:
print 'Node', node, 'is running on', node.cmd( 'hostname' ).strip()
net.pingAll()
CLI( net )
net.stop()
def addController( self, *args, **kwargs ):
"Patch to update IP address to global IP address"
controller = Mininet.addController( self, *args, **kwargs )
# Update IP address for controller that may not be local
if ( isinstance( controller, Controller)
and controller.IP() == '127.0.0.1'
and ' eth0:' in controller.cmd( 'ip link show' ) ):
Intf( 'eth0', node=controller ).updateIP()
return controller
def multiControllerNet():
"Create a network from semi-scratch with multiple controllers."
net = Mininet(controller=Controller, switch=OVSSwitch)
print "*** Creating (reference) controllers"
c1 = net.addController('c1', port=6633)
c2 = net.addController('c2', port=6634)
print "*** Creating switches"
s1 = net.addSwitch('s1')
s2 = net.addSwitch('s2')
print "*** Creating hosts"
hosts1 = [net.addHost('h%d' % n) for n in 3, 4]
hosts2 = [net.addHost('h%d' % n) for n in 5, 6]
print "*** Creating links"
for h in hosts1:
net.addLink(s1, h)
for h in hosts2:
net.addLink(s2, h)
net.addLink(s1, s2)
print "*** Starting network"
net.build()
c1.start()
c2.start()
s1.start([c1])
s2.start([c2])
print "*** Testing network"
net.pingAll()
print "*** Running CLI"
CLI(net)
print "*** Stopping network"
net.stop()
from src.mininet.topolib import TreeTopo
from src.mininet.log import setLogLevel
from src.mininet.cli import CLI
setLogLevel('info')
# Two local and one "external" controller (which is actually c0)
# Ignore the warning message that the remote isn't (yet) running
c0 = Controller('c0', port=6633)
c1 = Controller('c1', port=6634)
c2 = RemoteController('c2', ip='127.0.0.1', port=6633)
cmap = {'s1': c0, 's2': c1, 's3': c2}
class MultiSwitch(OVSSwitch):
"Custom Switch() subclass that connects to different controllers"
def start(self, controllers):
return OVSSwitch.start(self, [cmap[self.name]])
topo = TreeTopo(depth=2, fanout=2)
net = Mininet(topo=topo, switch=MultiSwitch, build=False)
for c in [c0, c1]:
net.addController(c)
net.build()
net.start()
CLI(net)
net.stop()