def updateRoutes( self, lsAlgorithm, switches, linkWeights ):
display.section("Adding Flow table entries...")
log.infoln('Switch\t Protocols\t Dst-Address\t Actions')
log.infoln('-------------------------------------------------------')
weights = [ ( 's'+str(i[0]), 's'+str(i[1]), i[2] )
for i in linkWeights ]
# For each switch
for sourceSwitch in switches:
routes = lsAlgorithm( sourceSwitch, weights )
# Compute the least cost route for each destination
for route in routes:
# Least cost paths to destinations
dstSwitch = last(route)
dstHost = 'h%s' % dstSwitch[1:]
dstAddress = self.IP(dstHost)
## Switches to the connected host flows
srcHost = 'h%s' % sourceSwitch[1:]
srcAddress = self.IP(srcHost)
(iPort, oPort) = self.connectionPorts( srcHost, sourceSwitch )
log.debugln('Source:', (sourceSwitch, srcHost, srcAddress, oPort))
log.debugln('Destination', (dstSwitch, dstHost, dstAddress, oPort))
self.flows.add( sourceSwitch, srcAddress, oPort )
## Switches to switches flows
prev = sourceSwitch
for i in range( 1, len(route) ):
current = route[i]
(iPort, oPort) = self.connectionPorts( prev, current )
self.flows.add( prev, dstAddress, iPort )
prev = current
def add(self, switch, dstAddress, oPort):
# Log example: 's1 ARP, IP 192.168.1.1 output:3'
log.infoln('%s\t\t %s\t %s\t output:%s' %
(switch, ', '.join(self.protocols), dstAddress, oPort))
return [
self.do('add-flow %s %s,nw_dst=%s,actions=output:%s' %
(switch, protocol.lower(), dstAddress, oPort))
for protocol in self.protocols
]
def prepareNetwork(self, preset, **kwargs):
log.do("Prepare TestNet from %s." % preset)
topology = preset()
log.infoln(topology.longDescription())
network = Mininet(topo=topology,
controller=RemoteController('c0',
ip='127.0.0.1',
port=6653),
ipBase='10.10.0.0/16',
autoSetMacs=True,
**kwargs)
log.infoln("Built TestNet topology from template class %s" %
type(topology))
log.done("Network<id%s> is ready to start." % id(network))
return network
def do_weights( self, _ ):
display.section("Weights")
log.infoln('Link\t\tWeight')
log.infoln('--------------------')
for (i, j, w) in self.mn.topo._slinks:
log.infoln('{s%s, s%s}\t%s' % (i, j, w))
def clean( self ):
cleanup()
log.infoln('Cleaned up old files')
def enableNetworkAddressTranslation(self, network):
log.infoln("Adding and configuring NAT...")
network.addNAT().configDefault()
def reassignAddresses(self, network):
log.infoln('Reassigning host IP addresses.')
for i in irange(1, len(network.switches)):
switch = network.nameToNode[s(i)]
host = network.nameToNode[h(i)]
host.setIP('10.10.%s.%s' % (i, i))