def delete( self ):
"Delete interface"
if self.nsInstalled:
warn( "You can not delete once installed ns-3 device, "
"run mininet.ns3.clear() to delete all ns-3 devices\n" )
else:
Intf.delete( self )
def rename( self, newname ):
"Rename interface"
# If TapBridge is installed in ns-3, but ns-3 has not connected to the Linux tap interface yet...
if self.nsInstalled and not self.isConnected():
# ...change device name in TapBridge to the new one.
self.tapbridge.SetAttribute ( "DeviceName", ns.core.StringValue( newname ) )
Intf.rename( self, newname )
def _create_links(self, links):
def is_remote(node):
return isinstance(node, RemoteSwitch)
def is_local(node):
return not is_remote(node)
self._info('**** Create %d link(s)' % len(links))
for id, link in links.iteritems():
self._debug('\tCreate link %s with params: %s' % (id, link))
node1 = self.net.get(link['node1'])
node2 = self.net.get(link['node2'])
name_to_node = {'node1': node1, 'node2': node2}
link.update(name_to_node)
remote = filter(is_remote, [node1, node2])
local = filter(is_local, [node1, node2])
if not remote:
self.net.addLink(**link)
else:
sw = local[0]
r = remote[0]
intfName = r.params['local_intf_name']
r_mac = None # unknown, r.params['remote_mac']
r_port = r.params['remote_port']
self._debug('\tadd hw interface (%s) to node (%s)' %
(intfName, sw.name))
# This hack avoids calling __init__ which always makeIntfPair()
link = Link.__new__(Link)
i1 = Intf(intfName, node=sw, link=link)
i2 = Intf(intfName, node=r, mac=r_mac, port=r_port, link=link)
i2.mac = r_mac # mn runs 'ifconfig', which resets mac to None
#
link.intf1, link.intf2 = i1, i2
def main():
topo = MyTopo(args.behavioral_exe, args.json, args.thrift_port)
net = Mininet(topo=topo, host=P4Host, switch=P4Switch, controller=None)
cpu_intf1 = Intf("m-veth-1", net.get('s1'), 11)
cpu_intf2 = Intf("m-veth-2", net.get('s1'), 12)
net.start()
sleep(1)
cmd = [args.cli, args.json, str(args.thrift_port)]
with open(args.p4_path + "/commands.txt", "r") as f:
print " ".join(cmd)
try:
output = subprocess.check_output(cmd, stdin=f)
print output
except subprocess.CalledProcessError as e:
print e
print e.output
sleep(1)
print "Ready !"
CLI(net)
net.stop()
def __init__(self,
name,
node,
port=None,
nsNode=None,
nsDevice=None,
mode=None,
**params):
"""
"""
self.name = name
self.createTap()
self.delayedMove = True
if node.inNamespace:
self.inRightNamespace = False
else:
self.inRightNamespace = True
Intf.__init__(self, name, node, port, **params)
allTBIntfs.append(self)
self.nsNode = nsNode
self.nsDevice = nsDevice
self.mode = mode
self.params = params
self.nsInstalled = False
self.tapbridge = ns.tap_bridge.TapBridge()
if self.nsNode and self.nsDevice and (self.mode or self.node):
self.nsInstall()
if self.node and self.nsInstalled and self.isInstant(
): # instant mode to be implemented in ns-3
self.namespaceMove()
def run_exercise(self):
""" Sets up the mininet instance, programs the switches,
and starts the mininet CLI. This is the main method to run after
initializing the object.
"""
# Initialize mininet with the topology specified by the config
self.create_network()
Intf('enp0s3', node=self.net.getNodeByName("s1"), port=255)
Intf('enp0s3', node=self.net.getNodeByName("s2"), port=255)
Intf('enp0s3', node=self.net.getNodeByName("s3"), port=255)
self.net.start()
sleep(1)
# some programming that must happen after the net has started
self.program_hosts()
self.program_switches()
# wait for that to finish. Not sure how to do this better
sleep(1)
self.do_net_cli()
# stop right after the CLI is exited
self.net.stop()
def oneswitch():
CONTROLLER_IP = '127.0.0.1'
net = Mininet(topo=None, build=False)
net.addController('c0',
controller=RemoteController,
ip=CONTROLLER_IP,
port=6633)
s0 = net.addSwitch('s0')
h0 = net.addHost('h0', ip='192.168.1.5', mac='00:00:00:00:01:05')
net.addLink(h0, s0)
# Delete old tunnel if still exists
s0.cmd('ip link del cntl-s0 || ip link del s0-cntl')
# Create Veth Pair
s0.cmd('ip link add cntl-s0 type veth peer name s0-cntl')
s0.cmd('ip link set cntl-s0 up && ip link set s0-cntl up')
Intf('s0-cntl', node=s0)
Intf('eth2', node=s0)
net.start()
CLI(net)
net.stop()
def run_fvtopo():
# Create topology.
net = Mininet(topo=FVTopo(),
controller=RemoteController,
autoSetMacs=True,
autoStaticArp=False,
link=TCLink)
# Add external interface.
intfName0 = 'eth0'
intfName1 = 'eth1'
switch1 = net.switches[0]
info('*** Adding hardware interface', intfName0, 'to switch', switch1.name,
'\n')
_intf = Intf(intfName0, node=switch1)
switch4 = net.switches[-1]
info('*** Adding hardware interface', intfName1, 'to switch', switch4.name,
'\n')
_intf = Intf(intfName1, node=switch4)
# Run it.
net.start()
CLI(net)
net.stop()
def rename( self, newname ):
"Rename interface"
# If TapBridge is installed in ns-3, but ns-3 has not connected to the Linux tap interface yet...
if self.nsInstalled and not self.isConnected():
# ...change device name in TapBridge to the new one.
self.tapbridge.SetAttribute ( "DeviceName", ns.core.StringValue( newname ) )
Intf.rename( self, newname )
def delete(self):
"Delete interface"
if self.nsInstalled:
warn("You can not delete once installed ns-3 device, "
"run mininet.ns3.clear() to delete all ns-3 devices\n")
else:
Intf.delete(self)
def _create_links(self, links):
def is_remote(node):
return isinstance(node, RemoteSwitch)
def is_local(node):
return not is_remote(node)
self._info('**** Create %d link(s)' % len(links))
for id, link in links.iteritems():
self._debug('\tCreate link %s with params: %s' % (id, link))
node1 = self.net.get(link['node1'])
node2 = self.net.get(link['node2'])
name_to_node = {'node1': node1, 'node2': node2}
link.update(name_to_node)
remote = filter(is_remote, [node1, node2])
local = filter(is_local, [node1, node2])
if not remote:
self.net.addLink(**link)
else:
sw = local[0]
r = remote[0]
intfName = r.params['local_intf_name']
r_mac = None # unknown, r.params['remote_mac']
r_port = r.params['remote_port']
self._debug('\tadd hw interface (%s) to node (%s)' % (intfName, sw.name))
# This hack avoids calling __init__ which always makeIntfPair()
link = Link.__new__(Link)
i1 = Intf(intfName, node=sw, link=link)
i2 = Intf(intfName, node=r, mac=r_mac, port=r_port, link=link)
i2.mac = r_mac # mn runs 'ifconfig', which resets mac to None
#
link.intf1, link.intf2 = i1, i2
def createInboundNet():
net = Mininet(topo=None,
build=False,
switch=OVSSwitch,
controller=InbandController)
c0 = net.addController('c0', ip="10.10.100.1",
port=6633) # set remote controller ip & port
# add 3 hosts to network. controller software will run on h1
h1 = net.addHost('h1', ip='192.168.0.1/24')
# add switch, enable in-band control
s1 = net.addSwitch('s1', inband=True)
# add links
net.addLink(h1, s1)
# add interface
intf1CtrName = "ens192"
intf2CtrName = "ens224"
_intf1Ctr = Intf(intf1CtrName, node=s1)
_intf2Ctr = Intf(intf2CtrName, node=s1)
net.start()
# s1 need to be equipped with an ip address to contact the controller
s1.cmd('ifconfig s1 inet 10.10.100.2/24')
# run controller sofware on h1, and redirect STDOUT & STDERR to log file
# h1.cmd("ovs-testcontroller ptcp:6633 1>/tmp/c0.log 2>/tmp/c0.log &")
CLI(net)
net.stop()
def __init__(self, **opts):
"""Create custom topo."""
# Initialize topology
# It uses the constructor for the Topo cloass
super(SimplePktSwitch, self).__init__(**opts)
# Add hosts and switches
#h1 = self.addHost('h1')
#h2 = self.addHost('h2')
# Adding switches
s1 = self.addSwitch('s1', dpid="0000000000000001")
s2 = self.addSwitch('s2', dpid="0000000000000002")
s3 = self.addSwitch('s3', dpid="0000000000000003")
s4 = self.addSwitch('s4', dpid="0000000000000004")
s5 = self.addSwitch('s5', dpid="0000000000000005")
# agregar link
info( '\n*** Creating Physical Interfaces ***\n' )
info( ' *** Checking', 'eth0', '\n' )
checkIntf( 'eth1' )
eth0 = Intf( 'eth0' , node=s1 )
info( '\n*** Creating Physical Interfaces ***\n' )
info( ' *** Checking', 'eth1', '\n' )
checkIntf( 'eth2' )
eth0 = Intf( 'eth2' , node=s5 )
def redeThiago():
# Criando topologia sem definicao, apenas para testes
net = Mininet(topo=None, build=False)
# Adiciona a Controladora com nome c0
info('=> ADICIONANDO CONTROLLER c0...\n')
net.addController(name='c0')
# Cria switch s1, que deve ser bridge da eth1 e conectar o host h1
info('=> ADICIONANDO SWITCH s1 NA PORTA 3364...\n')
s1 = net.addSwitch('s1')
# Adicionando eth1 da controller na switch s1
Intf('eth1', node=s1)
s1.listenPort = 6634
# Cria switch s2, que deve ser bridge da eth2 e conectar o host h2
info('=> ADICIONANDO SWITCH s2 NA PORTA 3365...\n')
s2 = net.addSwitch('s2')
# Adicionando eth2 da controller na switch s1
Intf('eth2', node=s2)
s2.listenPort = 6635
# Cria o host h1 sem parametros de rede
info('=> ADICIONANDO HOST h1...\n')
h1 = net.addHost('h1', ip='0.0.0.0')
# Cria o host h2 sem parametros de rede
info('=> ADICIONANDO HOST h2...\n')
h2 = net.addHost('h2', ip='0.0.0.0')
# Monta a topologia fisica (links)
info('=> LIGANDO HOSTS AO SWITCH...\n')
# Liga host h1 ao switch s1
net.addLink(h1, s1)
# Liga host h2 ao switch s1 e s2
net.addLink(h2, s2) # Deve vir primeiro
net.addLink(h2, s1)
# Configuracoes de rede (IPs, MACs e DNS)
info('=> CONFIGURANDO REDE NOS HOSTS...\n')
net.start()
h1.cmdPrint(
'ifconfig h1-eth0 172.16.0.10 netmask 255.255.255.0 hw ether 00:00:00:00:00:02'
)
h1.cmdPrint('route add default gw 172.16.0.1')
h1.cmdPrint('echo nameserver\ 8.8.8.8 > /etc/resolv.conf')
h2.cmdPrint(
'ifconfig h2-eth0 172.16.0.20 netmask 255.255.255.0 hw ether 00:00:00:00:00:03'
)
h2.cmdPrint('route add default gw 172.16.0.1')
h2.cmdPrint('echo nameserver\ 8.8.8.8 > /etc/resolv.conf')
h2.cmdPrint(
'ifconfig h2-eth1 172.16.0.21 netmask 255.255.255.0 hw ether 00:00:00:00:00:05'
)
CLI(net)
net.stop()
def get_or_create_intf(dev_name, obj, port):
if port not in obj.intfs:
# does not exist, let's create it
return Intf(dev_name, node=obj, port=port)
if str(obj.intfs[port]) != dev_name:
# intf exists, but port is invalid
return Intf(dev_name, node=obj, port=port)
return obj.intfs[port]
def linkBridgeCluster(self, bridge, cluster):
clusterId = self.clusters.index(cluster) + 1
bridgeId = self.bridges.index(bridge) + 1
clusterIp = '30.0.0.%d' % clusterId
bridgeIp = '20.0.0.2%d%d' % (bridgeId, clusterId)
greNameBridge = 'gre%d' % clusterId
greNameCluster = 'gre%d' % bridgeId
### Create gre in cluster
greRouter = cluster.greRouter
# Create gre interface
greRouter.cmd('ip tunnel add name ' + greRouter.name + '-' +
greNameCluster + ' mode gre remote ' + bridgeIp +
' local ' + clusterIp + ' ttl 64 dev ' + greRouter.name +
'-eth0')
greRouter.inNamespace = False
Intf(greRouter.name + '-' + greNameCluster, greRouter)
greRouter.inNamespace = True
### Create gre in bridge
# New router to support tunnel
bridgeGre = self.mininet.addHost(bridge.name + greNameBridge,
cls=LinuxRouter,
ip='1.1.1.254/24')
# Link with bridge
self.mininet.addLink(bridge,
bridgeGre,
intfName1=bridge.name + '-' + greNameBridge,
intfName2=bridgeGre.name + '-eth0',
params1={'ip': '1.1.1.1/24'},
params2={'ip': '1.1.1.254/24'})
# Connect bridge to overlay
self.mininet.addLink(self.os2,
bridgeGre,
intfName2=bridgeGre.name + '-eth1',
params2={'ip': bridgeIp + '/8'})
# Create gre interface
bridgeGre.cmd('ip tunnel add name ' + bridgeGre.name + '-gre1' +
' mode gre remote ' + clusterIp + ' local ' + bridgeIp +
' ttl 64 dev ' + bridgeGre.name + '-eth1')
bridgeGre.inNamespace = False
Intf(bridgeGre.name + '-gre1', bridgeGre)
bridgeGre.inNamespace = True
## Routes
# Default gateway
bridgeGre.cmd('ip route add default dev ' + bridgeGre.name + '-gre1')
# To join cluster
bridgeGre.cmd('ip route add ' + clusterIp + ' via 20.0.0.254')
'''
def main(args):
if not args.onos_ip:
controller = ONOSCluster('c0', 3)
onosIp = controller.nodes()[0].IP()
else:
controller = RemoteController('c0', ip=args.onos_ip)
onosIp = args.onos_ip
topo = ClosTopo(args)
net = Mininet(topo=topo, build=False, controller=[controller])
net.build()
# Add an interface that the collector is connected to
collectorIntf1 = Intf('veth_11', node=net.nameToNode["s11"])
collectorIntf2 = Intf('veth_21', node=net.nameToNode["s12"])
net.start()
print "Network started"
# Always generate background pings.
sleep(3)
for (h1, h2) in combinations(net.hosts, 2):
h1.startPingBg(h2)
h2.startPingBg(h1)
print "Background ping started"
for h in net.hosts:
h.startIperfServer()
print "Iperf servers started"
if args.bg_traffic:
sleep(4)
print "Starting iperf clients..."
for (h1, h2) in combinations(net.hosts, 2):
h1.startIperfClient(h2, flowBw="10k", numFlows=10, duration=999999)
h2.startIperfClient(h1, flowBw="10k", numFlows=10, duration=999999)
generateNetcfg(onosIp, net, args)
if args.netcfg_sleep > 0:
print "Waiting %d seconds before pushing config to ONOS..." \
% args.netcfg_sleep
sleep(args.netcfg_sleep)
print "Pushing config to ONOS..."
call(("%s/onos-netcfg" % RUN_PACK_PATH, onosIp, TEMP_NETCFG_FILE))
if not args.onos_ip:
ONOSCLI(net)
else:
CLI(net)
net.stop()
call(("rm", "-f", TEMP_NETCFG_FILE))
def myNetwork():
net = Mininet(topo=None, build=False, ipBase='10.0.0.0/8')
info('*** Adding controller\n')
c0 = net.addController(name='c0',
controller=RemoteController,
protocol='tcp',
ip='127.0.0.1',
port=6633)
info('*** Add switches\n')
s1 = net.addSwitch('s1', cls=OVSKernelSwitch, protocols='OpenFlow13')
s2 = net.addSwitch('s2', cls=OVSKernelSwitch, protocols='OpenFlow13')
s3 = net.addSwitch('s3', cls=OVSKernelSwitch, protocols='OpenFlow13')
s4 = net.addSwitch('s4', cls=OVSKernelSwitch, protocols='OpenFlow13')
s5 = net.addSwitch('s5', cls=OVSKernelSwitch, protocols='OpenFlow13')
s6 = net.addSwitch('s6', cls=OVSKernelSwitch, protocols='OpenFlow13')
net.addLink('s1', 's2')
net.addLink('s1', 's3')
net.addLink('s1', 's4')
net.addLink('s1', 's5')
net.addLink('s2', 's6')
net.addLink('s3', 's6')
net.addLink('s4', 's6')
net.addLink('s5', 's6')
info('*** Starting network\n')
net.build()
info('*** Starting controllers\n')
for controller in net.controllers:
controller.start()
info('*** Starting switches\n')
net.get('s1').start([c0])
net.get('s2').start([c0])
net.get('s3').start([c0])
net.get('s4').start([c0])
net.get('s5').start([c0])
net.get('s6').start([c0])
info('*** Post configure switches and hosts\n')
info('*** Add interfaces to switch ***')
_intf = Intf('eth0', node=s1)
_intf = Intf('eth1', node=s1)
_intf = Intf('eth3', node=s6)
_intf = Intf('eth4', node=s6)
call(['ovs-vsctl', 'add-port', 's1', 'eth0'])
call(['ovs-vsctl', 'add-port', 's1', 'eth1'])
call(['ovs-vsctl', 'add-port', 's6', 'eth3'])
call(['ovs-vsctl', 'add-port', 's6', 'eth4'])
CLI(net)
net.stop()
def myNetwork():
net = Mininet( topo=None,
build=False,
switch=OVSSwitch)
info( '*** Adding controller\n' )
ryu_ctl=net.addController(name='c0',
controller=RemoteController)
info( '*** Add switches\n')
s1 = net.addSwitch('s1', dpid='00000002', protocols='OpenFlow13')
Intf( 'eth0', node=s1 )
s2 = net.addSwitch('s2', dpid='0000000A', protocols='OpenFlow13')
Intf( 'eth1', node=s2 )
info( '*** Add hosts\n')
h1 = net.addHost('h1')
info( '*** Add links\n')
net.addLink(h1,s1)
net.addLink(h1,s2)
info( '*** Starting network\n')
net.build()
info( '*** Starting switches\n')
net.get('s1').start([ryu_ctl])
net.get('s2').start([ryu_ctl])
info( '*** Post configure switches and hosts\n')
s1.cmd("sudo ifconfig eth0 0")
s1.cmd("sudo ifconfig eth1 0")
s1.cmd("sudo ifconfig s1 192.168.137.128/24")
s1.cmd("sudo route add -net 192.168.137.0/24 dev s1")
s2.cmd("sudo ifconfig s2 192.168.237.138/24")
s2.cmd("sudo route add -net 192.168.237.0/24 dev s2")
s2.cmd("sudo route add default gw 192.168.137.2")
h1.cmd("sudo ifconfig h1-eth0 192.168.137.150/24")
h1.cmd("sudo ifconfig h1-eth1 192.168.237.150/24")
h1.cmd("sudo route add default gw 192.168.137.2")
h1.cmd("sudo sysctl -w net.ipv4.ip_forward=1")
h1.cmd("sudo iptables -t nat -A POSTROUTING -o h1-eth0 -j MASQUERADE")
h1.cmd("sudo iptables -A FORWARD -i h1-eth1 -o h1-eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT")
h1.cmd("sudo iptables -A FORWARD -i h1-eth0 -o h1-eth1 -j ACCEPT")
CLI(net)
# the user has exited the mininet prompt.
# need to stop the net and restore the host IP configurations
s2.cmd('sudo ip addr add 192.168.237.138/24 dev eth1')
s1.cmd('sudo ifconfig eth0 down')
s1.cmd('sudo ifconfig eth0 up')
#s1.cmd('sudo dhclient eth0')
net.stop()
def createInboundNet():
net = Mininet(topo=None,
build=False,
switch=OVSSwitch,
controller=InbandController)
c0 = net.addController('c0', ip="192.168.100.1",
port=6633) # set remote controller ip & port
# add 3 hosts to network. controller software will run on h1
h1 = net.addHost('h1', ip='192.168.101.1/24')
h2 = net.addHost('h2', ip='192.168.101.2/24')
h3 = net.addHost('h3', ip='192.168.101.3/24')
# add switch, enable in-band control
s1 = net.addSwitch('s1', inband=True)
s2 = net.addSwitch('s2', inband=True)
s3 = net.addSwitch('s3', inband=True)
# add links
net.addLink(h1, s1)
net.addLink(h2, s2)
net.addLink(h3, s3)
net.addLink(s1, s2)
net.addLink(s3, s2)
net.addLink(s1, s3)
intf2CtrName = "ens224"
intf2AjName = "ens256"
_intf2Ctr = Intf(intf2CtrName, node=s1)
_intf2Aj = Intf(intf2AjName, node=s2)
net.start()
s1.cmd("ovs-vsctl set bridge s1 stp-enable=true")
s2.cmd("ovs-vsctl set bridge s2 stp-enable=true")
s3.cmd("ovs-vsctl set bridge s3 stp-enable=true")
# s1 need to be equipped with an ip address to contact the controller
s1.cmd('ifconfig s1 inet 192.168.100.11/24')
s2.cmd('ifconfig s2 inet 192.168.100.12/24')
s3.cmd('ifconfig s3 inet 192.168.100.13/24')
# run controller sofware on h1, and redirect STDOUT & STDERR to log file
#h1.cmd("ovs-testcontroller ptcp:6633 1>/tmp/c0.log 2>/tmp/c0.log &")
CLI(net)
net.stop()
def addController( self, *args, **kwargs ):
"Patch to update IP address to global IP address"
controller = Mininet.addController( self, *args, **kwargs )
controllerIP = controller.IP()
if ( not isinstance( controller, Controller ) or
not self.isLoopback( controller.IP() ) ):
return controller
# Find route to a different server IP address
serverIPs = [ ip for ip in self.serverIP.values()
if ip != controllerIP ]
if not serverIPs:
return None # no remote servers - loopback is fine
for remoteIP in serverIPs:
# Route should contain 'dev <intfname>'
route = controller.cmd( 'ip route get', remoteIP,
r'| egrep -o "dev\s[^[:space:]]+"' )
if not route:
raise Exception('addController: no route from', controller,
'to', remoteIP )
intf = route.split()[ 1 ].strip()
if intf != 'lo':
break
if intf == 'lo':
raise Exception( 'addController: could not find external '
'interface/IP for %s' % controller )
debug( 'adding', intf, 'to', controller )
Intf( intf, node=controller ).updateIP()
debug( controller, 'IP address updated to', controller.IP() )
return controller
def setup():
"Start Network"
topo = SingleSwitchTopo()
OVSSwitch13 = partial(OVSSwitch, protocols='OpenFlow13')
net = Mininet(topo=topo, ipBase='10.11.0.0/24', switch=OVSSwitch13, controller=RemoteController('c0', ip='192.168.56.1'), autoSetMacs=True, xterms=False)
for h in net.hosts:
info('Disabling IPV6 for ' + str(h) + '\n')
h.cmd("sysctl -w net.ipv6.conf.all.disable_ipv6=1")
h.cmd("sysctl -w net.ipv6.conf.default.disable_ipv6=1")
h.cmd("sysctl -w net.ipv6.conf.lo.disable_ipv6=1")
h.cmd("echo ''")
if str(h) in ['server', 'server2']:
h.cmd('/usr/sbin/lighttpd -D -f /etc/lighttpd/lighttpd.conf &')
info(str(h) + " is running a webserver now, You can connect at http://" + h.IP() + "/\n")
# if str(h) in ['dns']:
# h.cmd('/usr/sbin/named -f -u bind &')
# info("dns server started on dns node " + h.IP() + "\n")
for sw in net.switches:
if sw.name == 's66766':
_intf = Intf('enp0s9', node=sw)
net.start()
CLI(net)
net.stop()
def setup():
"Start Network"
topo = SingleSwitchTopo()
OVSSwitch13 = partial(OVSSwitch, protocols='OpenFlow13')
net = Mininet(topo=topo,
ipBase='10.11.0.0/24',
switch=OVSSwitch13,
controller=RemoteController('c0', ip='192.168.56.1'),
autoSetMacs=True,
xterms=False)
for h in net.hosts:
info('Disabling IPV6 for ' + str(h) + '\n')
h.cmd("sysctl -w net.ipv6.conf.all.disable_ipv6=1")
h.cmd("sysctl -w net.ipv6.conf.default.disable_ipv6=1")
h.cmd("sysctl -w net.ipv6.conf.lo.disable_ipv6=1")
h.cmd("echo ''")
if str(h) in [
'server',
]:
h.cmd('python -m SimpleHTTPServer 80 &')
info(
"Request Router is running a webserver now, You can connect at http://"
+ h.IP() + "/\n")
for sw in net.switches:
if sw.name == 's66766':
_intf = Intf('enp0s9', node=sw)
net.start()
CLI(net)
net.stop()
def build( self, **_opts ):
defaultIP1 = '10.0.3.10/24' # IP address for r0-eth1
defaultIP2 = '10.0.3.20/24'
router1 = self.addNode( 'r1', cls=LinuxRouter, ip=defaultIP1 )
router2 = self.addNode( 'r2', cls=LinuxRouter, ip=defaultIP2 )
switch1 = self.addSwitch('s1',dpid='1000000000000001')
switch2 = self.addSwitch('s2',dpid='1000000000000002')
h1 = self.addHost( 'h1', ip='10.0.1.100/24', defaultRoute='via 10.0.1.10',dpid='0000000000000001') #define gateway
h2 = self.addHost( 'h2', ip='10.0.2.100/24', defaultRoute='via 10.0.2.20',dpid='0000000000000002')
h3=self.addHost('h3',ip='10.0.4.100/24',defaultRoute='via 10.0.4.10', dpid='0000000000000003')
h4=self.addHost('h4',ip='10.0.5.100/24',defaultRoute='via 10.0.5.20', dpid='0000000000000004')
self.addLink(router1,router2,intfName1='r1-eth1',intfName2='r2-eth1')
self.addLink(h1,router1,intfName2='r1-eth2',params2={ 'ip' : '10.0.1.10/24' })#params2 define the eth2 ip address
self.addLink(h2,router2,intfName2='r2-eth2',params2={ 'ip' : '10.0.2.20/24' })
self.addLink(h3,switch1,intfName2='s1-eth0')
self.addLink(h4,switch2,intfName2='s2-eth0')
self.addLink(switch1,router1,intfName1='s1-eth1',intfName2='r1-eth3',params2={'ip':'10.0.4.10/24'})
self.addLink(switch2,router2,intfName1='s2-eth1',intfName2='r2-eth3',params2={'ip':'10.0.5.20/24'})
# Add physical interface
info( 'Defining physical interface\n' )
intfName = 'enp0s3'
info( 'Adding hardware interface to switch', '\n' )
_intf = Intf( intfName, node=switch1 )
def testRemoteNet(remote='ubuntu1', link=RemoteGRELink):
"Test remote Node classes"
print '*** Remote Node Test'
net = Mininet(host=RemoteHost, switch=RemoteOVSSwitch, link=link)
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()
net.stop()
def myNetwork():
net = Mininet(topo=None, build=False)
info('*** Adding controller\n')
net.addController(name='c0',
controller=RemoteController,
ip='0.0.0.0',
port=6633)
info('*** Add switches\n')
s1 = net.addSwitch('s1')
Intf('eth1', node=s1)
info('*** Add hosts\n')
h1 = net.addHost('h1', ip='0.0.0.0')
h2 = net.addHost('h2', ip='0.0.0.0')
info('*** Add links\n')
net.addLink(h1, s1)
net.addLink(h2, s1)
info('*** Starting network\n')
net.start()
h1.cmdPrint('dhclient ' + h1.defaultIntf().name)
h2.cmdPrint('dhclient ' + h2.defaultIntf().name)
CLI(net)
net.stop()
def create_dp_cpu_link(id, switch, bridge_name):
'''
Add virtual link within the INT collection network for each p4 switch
'''
_quietRun('ip link add name veth_dp_%i type veth peer name veth_cpu_%i' %
(id, id))
dp_mac = 'f6:61:c0:6a:00:0%i' % id
_quietRun('ip link set veth_cpu_%i netns ns_int' % id)
_quietRun('ifconfig veth_dp_%i hw ether %s' % (id, dp_mac))
_quietRun('ip link set dev veth_dp_%i up' % id)
quietRunNs('ip link set dev veth_cpu_%i up' % id)
for off in "rx tx sg tso ufo gso gro lro rxvlan txvlan rxhash".split(' '):
quietRun('/sbin/ethtool --offload veth_dp_%i %s off' % (id, off))
quietRunNs('/sbin/ethtool --offload veth_cpu_%i %s off' % (id, off),
display=False)
quietRunNs('sysctl -w net.ipv6.conf.veth_dp_%i.disable_ipv6=1' % id)
quietRunNs('sysctl -w net.ipv6.conf.veth_cpu_%i.disable_ipv6=1' % id)
quietRunNs('brctl addif %s veth_cpu_%i' % (bridge_name, id))
_intf = Intf('veth_dp_%i' % id, node=switch)
veth_dp_port = switch.intfNames().index('veth_dp_%i' % id)
print '*** Adding hardware interface', 'veth_dp_%i' % id, 'to switch', switch.name, 'with port index', veth_dp_port, '\n'
return veth_dp_port
def P2pDemo():
net = Mininet(topo=None, build=False)
info('*** Adding controller\n')
c0 = net.addController('c0',
controller=RemoteController,
ip='192.168.0.108',
port=6633)
info('*** Add switches\n')
s1 = net.addSwitch('s1')
Intf('eth0', node=s1)
info('*** Add hosts\n')
h1 = net.addHost('h1', ip='0.0.0.0')
info('*** Add links\n')
net.addLink(h1, s1)
info('*** Starting network\n')
net.start()
h1.cmdPrint('dhclient ' + h1.defaultIntf().name)
#h1.cmd(sudo deluge-gtk 'magnet:?xt=urn:btih:c1aa77dea674d71fbd85559034b6082b8434d36e&dn=lubuntu-16.04.3-desktop-amd64.iso')
CLI(net)
net.stop()
def perfTest( ):
"Create network and run simple performance test"
net = Mininet( controller=RemoteController, topo=None, link=TCLink )
c1 = net.addController('c1', ip='192.168.33.101', port=6033)
c2 = net.addController('c2', ip='192.168.33.101', port=6133)
c3 = net.addController('c3', ip='192.168.33.101', port=6233)
s1 = net.addSwitch('s1',dpid='1000000000000001')
#Intf('enp2s0', node=s1)
Intf('eth0', node=s1)
h1 = net.addHost('h1',ip='10.0.1.31')
h2 = net.addHost('h2',ip='10.0.1.32')
h3 = net.addHost('h3',ip='10.0.1.33')
net.addLink(h1, s1, bw=100)
net.addLink(h2, s1, bw=100)
net.addLink(h3, s1, bw=100)
net.start()
h1.cmd("./Client 2v5 10.0.1.11 10001&")
h2.cmd("./Client 3v5 10.0.1.11 10002&")
h3.cmd("./Client 4v5 10.0.1.11 10003")
#h3.cmd("sleep 10")
#CLI(net)
net.stop()
def addController(self, *args, **kwargs):
"Patch to update IP address to global IP address"
controller = Mininet.addController(self, *args, **kwargs)
loopback = '127.0.0.1'
if (not isinstance(controller, Controller)
or controller.IP() != loopback):
return None
# Find route to a different server IP address
serverIPs = [
ip for ip in self.serverIP.values() if ip is not controller.IP()
]
if not serverIPs:
return None # no remote servers - loopback is fine
remoteIP = serverIPs[0]
# Route should contain 'dev <intfname>'
route = controller.cmd('ip route get', remoteIP,
r'| egrep -o "dev\s[^[:space:]]+"')
if not route:
raise Exception('addController: no route from', controller, 'to',
remoteIP)
intf = route.split()[1].strip()
debug('adding', intf, 'to', controller)
Intf(intf, node=controller).updateIP()
debug(controller, 'IP address updated to', controller.IP())
return controller
def start_mininet(iface_names):
"""Start Mininet with the above topology.
:param iface_name: Network interface name of the host computer to
attach to the Mininet virtual network.
"""
topo = SimpleTopo()
net = Mininet(topo, build=False)
net.addController("c0",
controller=RemoteController,
port=6633,
switch=OVSSwitch)
net.build()
switch = net.switches[0]
for iface in iface_names:
lg.info("***Connecting {0} to virtual switch\n".format(iface))
# Connect the switch to the eth1 interface of this host machine!
Intf(iface, node=switch)
net.start()
set_qos(switch)
lg.info("***Dumping host connections\n")
dumpNodeConnections(net.hosts)
lg.info("***Dumping switch connections\n")
dumpNodeConnections(net.switches)
CLI(net)
net.stop()
def addDummyHost(net, topo):
print('**Adding dummy host (hardware setup).')
net.addHost('dummy')
_intf = Intf(INTERFACE, node=net.getNodeByName('dummy'))
client_switches = list(map(net.getNodeByName, topo.getClientSwitches()))
for sw in client_switches:
net.addLink(sw, net.getNodeByName('dummy'))
def testRemoteNet( remote='ubuntu2' ):
"Test remote Node classes"
info('*** Remote Node Test\n')
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()
info("*** Creating local h1\n")
h1 = net.addHost( 'h1' )
info("*** Creating remote h2\n")
h2 = net.addHost( 'h2', server=remote )
info("*** Creating local s1\n")
s1 = net.addSwitch( 's1' )
info("*** Creating remote s2\n")
s2 = net.addSwitch( 's2', server=remote )
info("*** Adding links\n")
net.addLink( h1, s1 )
net.addLink( s1, s2 )
net.addLink( h2, s2 )
net.start()
info('Mininet is running on', quietRun( 'hostname' ).strip())
for node in c0, h1, h2, s1, s2:
info('Node', node, 'is running on', node.cmd( 'hostname' ).strip())
net.pingAll()
CLI( net )
net.stop()
def found_vnf_links(self, vnf_id, links):
def get_intf_by_name(node, intf_name):
for i in node.intfList():
if str(i) == intf_name:
return i
return None
def get_or_create_intf(dev_name, obj, port):
if port not in obj.intfs:
# does not exist, let's create it
return Intf(dev_name, node=obj, port=port)
if str(obj.intfs[port]) != dev_name:
# intf exists, but port is invalid
return Intf(dev_name, node=obj, port=port)
return obj.intfs[port]
for i, link in enumerate(links):
if int(link['sw_port']) == -1:
# disconnected links (with port==-1) are omitted
continue
sw_name = link.get('sw_id', 'sw_id'+str(i))
sw_dev = link.get('sw_dev', 'sw_dev'+str(i))
sw_port = int(link['sw_port'])
nf_name = vnf_id
nf_dev = link.get('vnf_dev', 'vnf_dev'+str(i))
nf_port = int(link['vnf_port'])
nf_mac = link['vnf_dev_mac']
sw_obj = self.net.getNodeByName(sw_name)
try:
nf_obj = self.net.getNodeByName(nf_name)
except KeyError:
# this is a VNF not managed by mininet, yet we have to
# add to the mininet 'database'. TODO: Ideally, it
# would be a RemoteHost, but for now it is a
# RemoteSwitch.
nf_obj = self.net.addRemoteSwitch(nf_name, dpid="-1")
sw_i = get_or_create_intf(sw_dev, sw_obj, sw_port)
if nf_dev in nf_obj.intfNames():
nf_i = get_intf_by_name(nf_obj, nf_dev)
else:
nf_i = Intf(nf_dev, node=nf_obj, port=nf_port, mac=nf_mac)
nf_i.mac = nf_mac # mn runs 'ifconfig', which resets mac to None
self.found_link(sw_obj, nf_obj, sw_i, nf_i)
def __init__( self, name, node, port=None,
nsNode=None, nsDevice=None, mode=None, **params ):
"""name: interface name (e.g. h1-eth0)
node: owning Mininet node (where this intf most likely lives)
link: parent link if we're part of a link #TODO
nsNode: underlying ns-3 node
nsDevice: ns-3 device which the tap interface is bridged with
mode: mode of TapBridge ns-3 device (UseLocal or UseBridge)
other arguments are passed to config()"""
self.name = name
# Create a tap interface in the system, ns-3 TapBridge will connect to that interface later.
self.createTap()
# Set this Intf to be delayed move. This tells Mininet not to move the interface to the right
# namespace during Intf.__init__(). Therefore, the interface must be moved manually later.
# Actually, interfaces are moved right after the simulator thread start, in the start() global
# function.
self.delayedMove = True
# If this node is running in its own namespace...
if node.inNamespace:
# ...this interface is not yet in the right namespace (it is in the root namespace just after
# creation) and should be moved later.
self.inRightNamespace = False
else:
# ...interface should stay in the root namespace, so it is in right namespace now.
self.inRightNamespace = True
# Initialize parent Intf object.
Intf.__init__( self, name, node, port , **params)
allTBIntfs.append( self )
self.nsNode = nsNode
self.nsDevice = nsDevice
self.mode = mode
self.params = params
self.nsInstalled = False
# Create TapBridge ns-3 device.
self.tapbridge = ns.tap_bridge.TapBridge()
# If ns-3 node and bridged ns-3 device are set and TapBridge mode is known...
if self.nsNode and self.nsDevice and ( self.mode or self.node ):
# ...call nsInstall().
self.nsInstall()
def __init__( self, name, node, port=None,
nsNode=None, nsDevice=None, mode=None, **params ):
"""
"""
self.name = name
self.createTap()
self.delayedMove = True
if node.inNamespace:
self.inRightNamespace = False
else:
self.inRightNamespace = True
Intf.__init__( self, name, node, port , **params)
allTBIntfs.append( self )
self.nsNode = nsNode
self.nsDevice = nsDevice
self.mode = mode
self.params = params
self.nsInstalled = False
self.tapbridge = ns.tap_bridge.TapBridge()
if self.nsNode and self.nsDevice and ( self.mode or self.node ):
self.nsInstall()
if self.node and self.nsInstalled and self.isInstant(): # instant mode to be implemented in ns-3
self.namespaceMove()
def config(self, bw=None, delay=None, jitter=None, loss=None,
disable_gro=True, speedup=0, use_hfsc=False, use_tbf=False,
latency_ms=None, enable_ecn=False, enable_red=False,
max_queue_size=None, **params):
"""Configure the port and set its properties."""
result = Intf.config(self, **params)
# Disable GRO
if disable_gro:
self.cmd('ethtool -K %s gro off' % self)
# Optimization: return if nothing else to configure
# Question: what happens if we want to reset things?
if (bw is None and not delay and not loss
and max_queue_size is None):
return
# Clear existing configuration
tcoutput = self.tc('%s qdisc show dev %s')
if "priomap" not in tcoutput and "noqueue" not in tcoutput:
cmds = ['%s qdisc del dev %s root']
else:
cmds = []
# Bandwidth limits via various methods
bwcmds, parent = self.bwCmds(bw=bw, speedup=speedup,
use_hfsc=use_hfsc, use_tbf=use_tbf,
latency_ms=latency_ms,
enable_ecn=enable_ecn,
enable_red=enable_red)
cmds += bwcmds
# Delay/jitter/loss/max_queue_size using netem
delaycmds, parent = self.delayCmds(delay=delay, jitter=jitter,
loss=loss,
max_queue_size=max_queue_size,
parent=parent)
cmds += delaycmds
# We add the filter for the HTB class
filtercmds = self.filterCmds(parent="parent 1:0", prio=1, handle=10, flowid="1:10")
cmds += filtercmds
filtercmds = self.filterCmds(parent="parent 1:0", prio=2, handle=20, flowid="1:20")
cmds += filtercmds
# Ugly but functional: display configuration info
stuff = ((['%.2fMbit' % bw] if bw is not None else []) +
(['%s delay' % delay] if delay is not None else []) +
(['%s jitter' % jitter] if jitter is not None else []) +
(['%.5f%% loss' % loss] if loss is not None else []) +
(['ECN'] if enable_ecn else ['RED']
if enable_red else []))
info('(' + ' '.join(stuff) + ') ')
# Execute all the commands in our node
debug("at map stage w/cmds: %s\n" % cmds)
# for cmd in cmds:
# print cmd
tcoutputs = [self.tc(cmd) for cmd in cmds]
# if "r_0_e0" in self.name:
# for cmd in cmds:
# print cmd
for output in tcoutputs:
if output != '':
error("*** Error: %s" % output)
debug("cmds:", cmds, '\n')
debug("outputs:", tcoutputs, '\n')
# add marks to packets through IPTABLES RULES
# OSPF: marks ospf packets with priority 0x14 (20)
#self.cmd("iptables -w -t mangle -A POSTROUTING -o %s -p 89 -j MARK --set-mark 20" % self.name)
# ICMP: marks icmp packets with priority 0xa (10)
#self.cmd("iptables -w -t mangle -A POSTROUTING -o %s -p 1 -j MARK --set-mark 10" % self.name)
# Traceroute: marks pakets with TTL < 10 that are not OSPF with priority 0xa (10)
#self.cmd("iptables -w -t mangle -A POSTROUTING -o %s -m ttl --ttl-lt 10 ! -p 89 -j MARK --set-mark 10" % self.name)
# TCP flags: Gives priority 20 to TCP SYN and ACK packets
#self.cmd("iptables -w -t mangle -A POSTROUTING -o %s -m ttl --ttl-gt 10 -p tcp --tcp-flags ACK ACK -m length --length :64 -j MARK --set-mark 20"% self.name)
#self.cmd("iptables -w -t mangle -A POSTROUTING -o %s -m ttl --ttl-gt 10 -p tcp --tcp-flags SYN SYN -m length --length :64 -j MARK --set-mark 20" % self.name)
self.cmd(iptables_path + " {0} &".format(self.name))
result['tcoutputs'] = tcoutputs
result['parent'] = parent
return result
def rename( self, newname ):
"Rename interface"
if self.nsInstalled and not self.isConnected():
self.tapbridge.SetAttribute ( "DeviceName", ns.core.StringValue( newname ) )
Intf.rename( self, newname )
