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()