def topology():
"Create a network."
net = Mininet(controller=RemoteController,
link=TCLink,
switch=OVSKernelSwitch)
print "*** Creating nodes"
h1 = net.addHost('h1', mac='00:00:00:00:00:01', ip='10.0.0.1/24')
h2 = net.addHost('h2', mac='00:00:00:00:00:02', ip='10.0.10.2/24')
h3 = net.addHost('h3', mac='00:00:00:00:00:03', ip='10.0.0.2/24')
s4 = net.addSwitch('s4', listenPort=6673, mac='00:00:00:00:00:04')
s5 = net.addSwitch('s5', listenPort=6674, mac='00:00:00:00:00:05')
c7 = net.addController('c7',
controller=RemoteController,
ip='127.0.0.1',
port=6633)
print "*** Creating links"
net.addLink(s4, h3, 2, 0)
#net.addLink(h1, s4, 0, 1)
Link(h1, s4, intfName1='h1-eth0')
net.addLink(s5, h2, 2, 0)
#net.addLink(h1, s5, 0, 1)
Link(h1, s5, intfName1='h1-eth1')
h1.cmd('ifconfig h1-eth1 10.0.10.1 netmask 255.255.255.0')
print "*** Starting network"
net.build()
c7.start()
s4.start([c7])
s5.start([c7])
print "*** Running CLI"
CLI(net)
print "*** Stopping network"
net.stop()
def __init__(self,
node1,
node2,
port1=None,
port2=None,
intfName1=None,
intfName2=None,
addr1=None,
addr2=None,
ip1=None,
ip2=None,
**params):
Link.__init__(self,
node1,
node2,
port1=port1,
port2=port2,
intfName1=intfName1,
intfName2=intfName2,
cls1=TCIntf,
cls2=TCIntf,
addr1=addr1,
addr2=addr2,
params1=params,
params2=params)
if ip1 is not None:
self.intf1.setIP(ip1)
if ip2 is not None:
self.intf2.setIP(ip2)
def __init__(
self,
node1,
node2,
port1=None,
port2=None,
intfName1=None,
intfName2=None,
addr1=None,
addr2=None,
ip1=None,
ip2=None,
**params
):
Link.__init__(
self,
node1,
node2,
port1=port1,
port2=port2,
intfName1=intfName1,
intfName2=intfName2,
cls1=TCIntf,
cls2=TCIntf,
addr1=addr1,
addr2=addr2,
params1=params,
params2=params,
)
if ip1 is not None:
self.intf1.setIP(ip1)
if ip2 is not None:
self.intf2.setIP(ip2)
def emptyNet():
net = Mininet(topo=None, build=False)
c0 = Controller('c0', inNamespace=False)
h1 = Host('h1')
h2 = Host('h2')
#intf1 = Intf("h1-eth1")
#intf2 = Intf("h2-eth1")
s1 = OVSSwitch('br0', inNamespace=False)
Link(h1, s1)
Link(h2, s1)
c0.start()
s1.start([c0])
net.start()
#s1.cmd('ovs-vsctl set bridge br0 protocols=OpenFlow13')
CLI(net)
net.stop()
h1.stop()
h2.stop()
s1.stop()
c0.stop()
def __init__(self,
node1,
node2,
port1=None,
port2=None,
intfName1=None,
intfName2=None,
addr1=None,
addr2=None,
**params):
params1 = params
params2 = params
if 'params1' in params:
params1 = params['params1']
params1.update(params)
if 'params2' in params:
params2 = params['params2']
params2.update(params)
Link.__init__(self,
node1,
node2,
port1=port1,
port2=port2,
intfName1=intfName1,
intfName2=intfName2,
cls1=TCIntf,
cls2=TCIntf,
addr1=addr1,
addr2=addr2,
params1=params1,
params2=params2)
def __init__(self,
node1,
node2,
port1=None,
port2=None,
intfName1=None,
intfName2=None,
addr1=None,
addr2=None,
**params):
_params1 = params.pop("params1", None)
_params2 = params.pop("params2", None)
params1 = params.copy()
if _params1:
params1.update(_params1)
params2 = params.copy()
if _params2:
params2.update(_params2)
Link.__init__(self,
node1,
node2,
port1=port1,
port2=port2,
intfName1=intfName1,
intfName2=intfName2,
cls1=TCIntf,
cls2=TCIntf,
addr1=addr1,
addr2=addr2,
params1=params1,
params2=params2)
def __init__(self,
node1,
node2,
port1=None,
port2=None,
intfName1=None,
intfName2=None,
addr1=None,
addr2=None,
params1=None,
params2=None,
**params):
params1 = params1 if params1 is not None else {}
params2 = params2 if params2 is not None else {}
params1.update(params)
params2.update(params)
Link.__init__(self,
node1,
node2,
port1=port1,
port2=port2,
intfName1=intfName1,
intfName2=intfName2,
cls1=TCIntf,
cls2=TCIntf,
addr1=addr1,
addr2=addr2,
params1=params1,
params2=params2)
def do_add_node(self, line):
"""Spawn a new node."""
host_num = len(NET.hosts) + 1
end_switch = NET.switches[-1]
new_switch = NET.addSwitch('s%d' % host_num)
new_host = NET.addHost("h%ds%d" % (host_num, host_num))
# TODO: Fix bug that doesn't allow adding nodes starting from 1
Link(new_host, new_switch)
slink = Link(end_switch, new_switch)
end_switch.attach(slink.intf1)
new_switch.start(NET.controllers)
new_host.configDefault(defaultRoute=new_host.defaultIntf())
c = xterm_cmd(ip=new_host.IP(),
port=config.PORT,
b_ip=NET.hosts[0].IP(),
b_port=config.PORT)
new_host.cmd(c % host_num)
print("Started new node: %s" % new_host)
def __init__(self, node1, node2, port1=None, port2=None, allowed=True,
intfName1=None, intfName2=None, linkType='OPTICAL',
annotations={}, speed1=0, speed2=0, **params):
"Creates a dummy link without a virtual ethernet pair."
self.allowed = allowed
self.annotations = annotations
self.linkType = linkType
self.port1 = port1
self.port2 = port2
params1 = { 'speed': speed1 }
params2 = { 'speed': speed2 }
if isinstance(node1, LINCSwitch) and isinstance(node2, LINCSwitch):
self.isXC = False
else:
self.isXC = True
if isinstance(node1, LINCSwitch):
cls1 = LINCIntf
if self.isXC:
node1.crossConnects.append(self)
else:
cls1 = Intf
# bad hack to stop error message from appearing when we try to set up intf in a packet switch,
# and there is no interface there( because we do not run makeIntfPair ). This way, we just set lo up
intfName1 = 'lo'
if isinstance(node2, LINCSwitch):
cls2 = LINCIntf
if self.isXC:
node2.crossConnects.append(self)
else:
cls2 = Intf
intfName2 = 'lo'
Link.__init__(self, node1, node2, port1=port1, port2=port2,
intfName1=intfName1, intfName2=intfName2, cls1=cls1,
cls2=cls2, params1=params1, params2=params2)
def makeIntfPair(self,
intfname1,
intfname2,
addr1=None,
addr2=None,
node1=None,
node2=None,
deleteIntfs=True):
"""Create pair of interfaces
intfname1: name of interface 1
intfname2: name of interface 2
(override this method [and possibly delete()]
to change link type)"""
node1 = self.node1 if node1 is None else node1
node2 = self.node2 if node2 is None else node2
server1 = getattr(node1, 'server', 'localhost')
server2 = getattr(node2, 'server', 'localhost')
if server1 == server2:
# Link within same server
Link.makeIntfPair(intfname1,
intfname2,
addr1,
addr2,
node1,
node2,
deleteIntfs=deleteIntfs)
# Need to reduce the MTU of all emulated hosts to 1450 for GRE
# tunneling, otherwise packets larger than 1400 bytes cannot be
# successfully transmitted through the tunnel.
node1.cmd('ip link set dev %s mtu 1450' % intfname1)
node2.cmd('ip link set dev %s mtu 1450' % intfname2)
else:
# Otherwise, make a tunnel
self.makeTunnel(node1, node2, intfname1, intfname2, addr1, addr2)
self.tunnel = 1
def __init__(self,
node1,
node2,
port1=None,
port2=None,
intfName1=None,
intfName2=None,
addr1=None,
addr2=None,
params1=None,
params2=None,
**kvargs):
Link.__init__(self,
node1,
node2,
port1=port1,
port2=port2,
intfName1=intfName1,
intfName2=intfName2,
cls1=TCIntf,
cls2=TCIntf,
addr1=addr1,
addr2=addr2,
params1=params1,
params2=params2)
def __init__( self, node1, node2, port1=None, port2=None, allowed=True,
intfName1=None, intfName2=None, linkType='OPTICAL',
annotations={}, speed1=0, speed2=0, **params ):
"Creates a dummy link without a virtual ethernet pair."
self.allowed = allowed
self.annotations = annotations
self.linkType = linkType
params1 = { 'speed': speed1 }
params2 = { 'speed': speed2 }
if isinstance( node1, OpticalSwitch ):
cls1 = OpticalIntf
else:
cls1 = Intf
# bad hack to stop error message from appearing when we try to set up intf in a packet switch,
# and there is no interface there( because we do not run makeIntfPair ). This way, we just set lo up
intfName1 = 'lo'
if isinstance( node2, OpticalSwitch ):
cls2 = OpticalIntf
else:
cls2 = Intf
intfName2 = 'lo'
Link.__init__( self, node1, node2, port1=port1, port2=port2,
intfName1=intfName1, intfName2=intfName2, cls1=cls1,
cls2=cls2, params1=params1, params2=params2 )
def __init__(self, node1, node2, port1=None, port2=None, allowed=True,
intfName1=None, intfName2=None, linkType='OPTICAL',
annotations={}, speed1=0, speed2=0, **params):
"Creates a dummy link without a virtual ethernet pair."
self.allowed = allowed
self.annotations = annotations
self.linkType = linkType
self.port1 = port1
self.port2 = port2
params1 = { 'speed': speed1 }
params2 = { 'speed': speed2 }
# self.isCrossConnect = True if self.annotations.get('optical.type') == 'cross-connect' else False
if isinstance(node1, LINCSwitch) and isinstance(node2, LINCSwitch):
self.isCrossConnect = False
else:
self.isCrossConnect = True
if isinstance(node1, LINCSwitch):
cls1 = LINCIntf
if self.isCrossConnect:
node1.crossConnects.append(self)
else:
cls1 = Intf
# bad hack to stop error message from appearing when we try to set up intf in a packet switch,
# and there is no interface there( because we do not run makeIntfPair ). This way, we just set lo up
intfName1 = 'lo'
if isinstance(node2, LINCSwitch):
cls2 = LINCIntf
if self.isCrossConnect:
node2.crossConnects.append(self)
else:
cls2 = Intf
intfName2 = 'lo'
Link.__init__(self, node1, node2, port1=port1, port2=port2,
intfName1=intfName1, intfName2=intfName2, cls1=cls1,
cls2=cls2, params1=params1, params2=params2)
def connectToRootNS(net,
ip='10.123.123.1',
mac='00123456789A',
prefixLen=8,
routes=['10.0.0.0/8']):
print "*** Creating controller"
c0 = net.addController('c0', ip='127.0.0.1', port=6633)
rootswitch = net.addSwitch('roots1', )
rootswitch.dpid = 'FFFFFFFFFFFFFFFF'
# Connect hosts to root namespace via switch. Starts network.
# network: Mininet() network object
# ip: IP address for root namespace node
# prefixLen: IP address prefix length (e.g. 8, 16, 24)
# routes: host networks to route to"
# Create a node in root namespace and link to switch 0
root = Node('root', inNamespace=False)
intf = Link(root, rootswitch).intf1
intf.setMAC(mac)
root.setIP(ip, prefixLen, intf)
print "*** Added Interface", str(intf), "Connected To Root-NameSpace"
fixNetworkManager(str(intf))
for host in net.hosts:
net.addLink(host, rootswitch)
# Add routes from root ns to hosts
for route in routes:
root.cmd('route add -net ' + route + ' dev ' + str(intf))
root.cmd('service network-manager restart')
return rootswitch
def emptyNet():
"Create an empty network and add nodes to it."
"[h1]<---network-a--->[s3]<--wifi-bridge-->[s4]<---network-b--->[h2]"
net = Mininet( controller=OVSController )
info( '*** Adding controllers\n' )
net.addController( 'c0' )
net.addController( 'c1' )
info( '*** Adding hosts\n' )
h1 = net.addHost( 'h1', ip='10.0.0.1' )
h2 = net.addHost( 'h2', ip='10.0.0.2' )
info( '*** Adding switches\n' )
s3 = net.addSwitch( 's3' )
s4 = net.addSwitch( 's4' )
info( '*** Creating links\n' )
Link( s3, h1 )
WIFIBridgeLink( s3, s4 )
Link( s4, h2 )
info( '*** Starting network\n')
net.start()
mininet.ns3.start()
info( '*** Running CLI\n' )
CLI( net )
info( '*** Stopping network' )
mininet.ns3.stop()
mininet.ns3.clear()
net.stop()
def myNet():
"Create network from scratch using Open vSwitch."
info( "*** Creating nodes\n" )
switch0 = Node( 's0', inNamespace=False )
h0 = Node( 'h0' )
h1 = Node( 'h1' )
h2 = Node( 'h2' )
info( "*** Creating links\n" )
Link( h0, switch0)
Link( h1, switch0)
Link( h2, switch0)
info( "*** Configuring hosts\n" )
h0.setIP( '192.168.123.1/24' )
h1.setIP( '192.168.123.2/24' )
h2.setIP( '192.168.123.3/24' )
info( "*** Starting network using Open vSwitch\n" )
switch0.cmd( 'ovs-vsctl del-br dp0' )
switch0.cmd( 'ovs-vsctl add-br dp0' )
for intf in switch0.intfs.values():
print intf
print switch0.cmd( 'ovs-vsctl add-port dp0 %s' % intf )
# Note: controller and switch are in root namespace, and we
# can connect via loopback interface
#switch0.cmd( 'ovs-vsctl set-controller dp0 tcp:127.0.0.1:6633' )
print switch0.cmd(r'ovs-vsctl show')
print switch0.cmd(r'ovs-ofctl add-flow dp0 idle_timeout=0,priority=1,in_port=1,actions=flood' )
print switch0.cmd(r'ovs-ofctl add-flow dp0 idle_timeout=0,priority=1,in_port=2,actions=flood' )
print switch0.cmd(r'ovs-ofctl add-flow dp0 idle_timeout=0,priority=1,in_port=3,actions=flood' )
print switch0.cmd(r'ovs-ofctl add-flow dp0 idle_timeout=0,priority=10,ip,nw_dst=192.168.123.1,actions=output:1' )
print switch0.cmd(r'ovs-ofctl add-flow dp0 idle_timeout=0,priority=10,ip,nw_dst=192.168.123.2,actions=output:2' )
print switch0.cmd(r'ovs-ofctl add-flow dp0 idle_timeout=0,priority=10,ip,nw_dst=192.168.123.3,actions=output:3')
#switch0.cmd('tcpdump -i s0-eth0 -U -w aaa &')
#h0.cmd('tcpdump -i h0-eth0 -U -w aaa &')
info( "*** Running test\n" )
h0.cmdPrint( 'ping -c 3 ' + h1.IP() )
h0.cmdPrint( 'ping -c 3 ' + h2.IP() )
#print switch0.cmd( 'ovs-ofctl show dp0' )
#print switch0.cmd( 'ovs-ofctl dump-tables dp0' )
#print switch0.cmd( 'ovs-ofctl dump-ports dp0' )
#print switch0.cmd( 'ovs-ofctl dump-flows dp0' )
#print switch0.cmd( 'ovs-ofctl dump-aggregate dp0' )
#print switch0.cmd( 'ovs-ofctl queue-stats dp0' )
info( "*** Stopping network\n" )
switch0.cmd( 'ovs-vsctl del-br dp0' )
switch0.deleteIntfs()
info( '\n' )
def stop( self ):
"Stop this link"
if self.tunnel:
self.intf1.delete()
self.intf2.delete()
else:
Link.stop( self )
self.tunnel = None
def stop(self):
"Stop this link"
if self.tunnel:
self.intf1.delete()
self.intf2.delete()
else:
Link.stop(self)
self.tunnel = None
def __init__(self, node1, node2, port1=None, port2=None,
intf_name1=None, intf_name2=None,
addr1=None, addr2=None, **params):
Link.__init__(self, node1, node2, port1=port1, port2=port2,
intfName1=intf_name1, intfName2=intf_name2,
cls1=FaucetIntf, cls2=FaucetIntf,
addr1=addr1, addr2=addr2,
params1=params, params2=params)
def __init__(self, node1, node2, **kwargs):
"See Link.__init__() for options"
self.isPatchLink = False
if (isinstance(node1, OVSSwitch) and isinstance(node2, OVSSwitch)
and getattr(node1, 'ovsdb', None) == getattr(
node2, 'ovsdb', None)):
self.isPatchLink = True
kwargs.update(cls1=OVSIntf, cls2=OVSIntf)
Link.__init__(self, node1, node2, **kwargs)
def __init__(self, node1, node2, port1=None, port2=None,
intfName1=None, intfName2=None, **params):
Link.__init__(self, node1, node2, port1=port1, port2=port2,
intfName1=intfName1, intfName2=intfName2,
cls1=SdnIntf,
cls2=SdnIntf,
params1=params,
params2=params)
self._connected = True
def __init__(self, node1, node2, **kwargs):
"""Initialize a RemoteLink
see Link() for parameters"""
# Create links on remote node
self.node1 = node1
self.node2 = node2
self.tunnel = None
kwargs.setdefault('params1', {})
kwargs.setdefault('params2', {})
Link.__init__(self, node1, node2, **kwargs)
def __init__(self, node1, node2, port1=None, port2=None,
intf_name1=None, intf_name2=None,
addr1=None, addr2=None, **params):
Link.__init__(self, node1, node2, port1=port1, port2=port2,
intfName1=intf_name1, intfName2=intf_name2,
cls1=ECNIntf,
cls2=ECNIntf,
addr1=addr1, addr2=addr2,
params1=params,
params2=params)
def __init__( self, node1, node2, **kwargs ):
"See Link.__init__() for options"
self.isPatchLink = False
if ( isinstance( node1, OVSSwitch ) and
isinstance( node2, OVSSwitch ) and
getattr( node1, 'ovsdb', None ) ==
getattr( node2, 'ovsdb', None ) ):
self.isPatchLink = True
kwargs.update( cls1=OVSIntf, cls2=OVSIntf )
Link.__init__( self, node1, node2, **kwargs )
def __init__( self, node1, node2, **kwargs ):
"""Initialize a RemoteLink
see Link() for parameters"""
# Create links on remote node
self.node1 = node1
self.node2 = node2
self.tunnel = None
kwargs.setdefault( 'params1', {} )
kwargs.setdefault( 'params2', {} )
Link.__init__( self, node1, node2, **kwargs )
def __init__(self,
node1,
node2,
port1=None,
port2=None,
intfName1=None,
intfName2=None):
WIFISegment.__init__(self,
standard=ns.wifi.WIFI_PHY_STANDARD_80211n_5GHZ)
#
if hasattr(node1, 'nsNode') and node1.nsNode is not None:
pass
else:
node1.nsNode = ns.network.Node()
allNodes.append(node1)
mobilityhelper1 = ns.mobility.MobilityHelper()
mobilityhelper1.Install(node1.nsNode)
if port1 is None:
port1 = node1.newPort()
if intfName1 is None:
intfName1 = Link.intfName(node1, port1) # classmethod
tb1 = TBIntf(intfName1, node1, port1, node1.nsNode)
#
if hasattr(node2, 'nsNode') and node2.nsNode is not None:
pass
else:
node2.nsNode = ns.network.Node()
allNodes.append(node2)
mobilityhelper2 = ns.mobility.MobilityHelper()
mobilityhelper2.Install(node2.nsNode)
if port2 is None:
port2 = node2.newPort()
if intfName2 is None:
intfName2 = Link.intfName(node2, port2) # classmethod
tb2 = TBIntf(intfName2, node2, port2, node2.nsNode)
#
self.machelper.SetType(
"ns3::WDSWifiMac", "ReceiverAddress",
ns.network.Mac48AddressValue(ns.network.Mac48Address(tb2.MAC())))
device1 = self.wifihelper.Install(self.phyhelper, self.machelper,
node1.nsNode).Get(0)
tb1.nsDevice = device1
tb1.nsInstall()
#
self.machelper.SetType(
"ns3::WDSWifiMac", "ReceiverAddress",
ns.network.Mac48AddressValue(ns.network.Mac48Address(tb1.MAC())))
device2 = self.wifihelper.Install(self.phyhelper, self.machelper,
node2.nsNode).Get(0)
tb2.nsDevice = device2
tb2.nsInstall()
#
tb1.link = self
tb2.link = self
self.intf1, self.intf2 = tb1, tb2
def stop(self):
"""
Stop this link
:return:
"""
if self.tunnel:
self.tunnel.terminate()
self.intf1.delete()
self.intf2.delete()
else:
Link.stop(self)
self.tunnel = None
def scratchNet(cname='controller', cargs='-v ptcp:'):
"Create network from scratch using Open vSwitch."
info("*** Creating nodes\n")
controller = Node('c0', inNamespace=False)
switch = Node('s0', inNamespace=False)
h0 = Node('h0')
h1 = Node('h1')
info("*** Creating links\n")
Link(h0, switch)
Link(h1, switch)
info("*** Configuring hosts\n")
h0.setIP('192.168.123.1/24')
h1.setIP('192.168.123.2/24')
info(str(h0) + '\n')
info(str(h1) + '\n')
info("*** Starting network using Open vSwitch\n")
controller.cmd(cname + ' ' + cargs + '&')
switch.cmd('ovs-vsctl del-br dp0')
switch.cmd(
'ovs-vsctl add-br dp0 other-config:datapath-id={}'.format(datapath_id))
for intf in switch.intfs.values():
print switch.cmd('ovs-vsctl add-port dp0 %s' % intf)
# Note: controller and switch are in root namespace, and we
# can connect via loopback interface
s_cmd = 'ovs-vsctl set-controller dp0 tcp:[{}]:{}'.format(
CTLR_IP, CTLR_PRT)
print s_cmd
switch.cmd(s_cmd)
ping_results = [
'received,host,jitter,packet_loss,avgping,minping,time,sent,maxping\n'
]
try:
h0.cmd('echo "" > pings.txt')
if mode == 0:
step_wise_testing(h0, h1, ping_results)
else:
continuous_testing(h0, h1, ping_results)
except KeyboardInterrupt:
print "Warning: Caught KeyboardInterrupt, stopping network"
tm_local = time.localtime()
dt = time.gmtime()
file_name = 'pings_{}_{}_{}-{}_{}_{}.csv'.format(
dt.tm_year, dt.tm_mon, dt.tm_mday, tm_local.tm_hour,
tm_local.tm_min, tm_local.tm_sec)
f = open(file_name, 'w+')
for item in ping_results:
f.write(item)
stop_net(controller, cname, switch)
def scratchNet(cname='controller', cargs='-v ptcp:'):
"Create network from scratch using Open vSwitch."
info("*** Creating nodes\n")
controller = Node('c0', inNamespace=False)
switch0 = Node('s0', inNamespace=False)
h0 = Node('h0')
h1 = Node('h1')
info("*** Creating links\n")
Link(h0, switch0)
Link(h1, switch0)
info("*** Configuring hosts\n")
h0.setIP('192.168.123.1/24')
h1.setIP('192.168.123.2/24')
info(str(h0) + '\n')
info(str(h1) + '\n')
info("*** Starting network using Open vSwitch\n")
controller.cmd(cname + ' ' + cargs + '&')
switch0.cmd('ovs-vsctl del-br dp0')
switch0.cmd('ovs-vsctl add-br dp0')
for intf in switch0.intfs.values():
print intf
print switch0.cmd('ovs-vsctl add-port dp0 %s' % intf)
# Note: controller and switch are in root namespace, and we
# can connect via loopback interface
switch0.cmd('ovs-vsctl set-controller dp0 tcp:127.0.0.1:6633')
switch0.cmd('ovs-ofctl add-flow dp0 \"in_port=1 actions=output:2\"')
switch0.cmd('ovs-ofctl add-flow dp0 \"in_port=2 actions=output:1\"')
info('*** Waiting for switch to connect to controller')
while 'is_connected' not in quietRun('ovs-vsctl show'):
sleep(1)
info('.')
info('\n')
info("*** Running test\n")
h0.cmdPrint('ping -c3 ' + h1.IP())
h1.cmdPrint('ping -c3 ' + h0.IP())
info("*** Stopping network\n")
controller.cmd('kill %' + cname)
switch0.cmd('ovs-vsctl del-br dp0')
switch0.deleteIntfs()
info('\n')
def scratchNet(cname='controller', cargs='-v ptcp:'):
"Create network from scratch using Open vSwitch."
info("*** Creating nodes\n")
controller = Node('c0', inNamespace=False)
switch = Node('s0', inNamespace=False)
h0 = Node('h0')
h1 = Node('h1')
info("*** Creating links\n")
Link(h0, switch)
Link(h1, switch)
info("*** Configuring hosts\n")
h0.setIP('192.168.123.1/24')
h1.setIP('192.168.123.2/24')
info(str(h0) + '\n')
info(str(h1) + '\n')
info("*** Starting network using Open vSwitch\n")
controller.cmd(cname + ' ' + cargs + '&')
switch.cmd('ovs-vsctl del-br dp0')
switch.cmd('ovs-vsctl add-br dp0')
for intf in switch.intfs.values():
print switch.cmd('ovs-vsctl add-port dp0 %s' % intf)
# Note: controller and switch are in root namespace, and we
# can connect via loopback interface
s_cmd = 'ovs-vsctl set-controller dp0 tcp:[{}]:{}'.format(
CTLR_IP, CTLR_PRT)
print s_cmd
switch.cmd(s_cmd)
info('*** Waiting for switch to connect to controller')
try:
while 'is_connected' not in quietRun('ovs-vsctl show'):
sleep(1)
info('.')
info('\n')
while True:
info("*** Running test\n")
h0.cmdPrint('ping -c1 ' + h1.IP())
info("*** Sleep\n")
sleep(2)
except KeyboardInterrupt:
print "Warning: Caught KeyboardInterrupt, stopping network"
stop_net(controller, cname, switch)
def add_link():
Link(hosts[0], switches[0])
Link(hosts[1], switches[0])
tmp1 = int(hosts.index('h0')) + 1
tmp2 = int(hosts.index('h1')) + 1
ip1 = '10.' + str(tmp1) + '/8'
ip2 = '10.' + str(tmp2) + '/8'
hosts[0].setIP(ip1)
hosts[1].setIP(ip2)
controllers[0].start()
switches[0].start(controllers[0])
ping = hosts[0].cmd('ping -c1', hosts[1].IP())
switches[0].stop()
controllers[0].stop()
return redirect(url_for('create'))
def configNameSpace(self):
global CONTROLLER
if self.controllers:
controller = self.controllers[0]
self.sip = controller.IP()
else:
if not CONTROLLER:
controller = P4Host('c0', inNamespace=False)
CONTROLLER = controller
else:
controller = CONTROLLER
self.cmd('ip link set lo up')
if not self.inband:
link = Link(self, controller, port1=0)
sintf, cintf = link.intf1, link.intf2
if controller.IP() == '127.0.0.1' or not controller.IP():
cip = self.getIP()
else:
cip = controller.IP()
controller.setIP(cip, intf='c0-eth%s' % (len(controller.intfs) - 1))
self.setIP(intf='%s-eth0' % self.name, ip=self.sip)
controller.setHostRoute('%s' % self.sip, cintf)
self.setHostRoute(cip, sintf)
return controller
def add(self, node, port=None, intfName=None, mode=None):
"""Connect Mininet node to the segment.
Will create WifiNetDevice with Mac type specified in
the MacHelper (default: AdhocWifiMac).
node: Mininet node
port: node port number (optional)
intfName: node tap interface name (optional)
mode: TapBridge mode (UseLocal or UseBridge) (optional)"""
# Check if this Mininet node has assigned an underlying ns-3 node.
if hasattr(node, 'nsNode') and node.nsNode is not None:
# If it is assigned, go ahead.
pass
else:
# If not, create new ns-3 node and assign it to this Mininet node.
node.nsNode = ns.network.Node()
allNodes.append(node)
# Install new device to the ns-3 node, using provided helpers.
device = self.wifihelper.Install(self.phyhelper, self.machelper,
node.nsNode).Get(0)
mobilityhelper = ns.mobility.MobilityHelper()
# Install mobility object to the ns-3 node.
mobilityhelper.Install(node.nsNode)
# If port number is not specified...
if port is None:
# ...obtain it automatically.
port = node.newPort()
# If interface name is not specified...
if intfName is None:
# ...obtain it automatically.
intfName = Link.intfName(node, port) # classmethod
# In the specified Mininet node, create TBIntf bridged with the 'device'.
tb = TBIntf(intfName, node, port, node.nsNode, device, mode)
return tb
def _auto_config_intf(self, node_name, intf_name, **param):
node = self.nodemap[node_name]
if 'port' not in param:
param['port'] = node.newPort()
if intf_name == 'auto':
intf_name = Link.intfName(node, param['port'])
if intf_name in node.nameToIntf:
error("Node %s already has interface %s." % (node, name))
return False
net = self.mn
if 'ip' not in param:
ip = net.nextIP
net.nextIP += 1
sufix = ipAdd(ip, ipBaseNum=net.ipBaseNum, prefixLen=net.prefixLen)
prefix = '/%s' % net.prefixLen
param['ip'] = sufix + prefix
if 'mac' not in param:
param['mac'] = macColonHex(ip)
elif 'mac' not in param:
ip, prefix = netParse(param['ip'])
param['mac'] = macColonHex(ip)
if 'cores' not in param and net.autoPinCpus:
param['cores'] = self.nextCore
net.nextCore = (net.nextCore + 1) % net.numCores
return True
def makeIntfPair(self,
intfname1,
intfname2,
addr1=None,
addr2=None,
node1=None,
node2=None,
deleteIntfs=True):
"""Create pair of interfaces
intfname1: name of interface 1
intfname2: name of interface 2
(override this method [and possibly delete()]
to change link type)"""
node1 = self.node1 if node1 is None else node1
node2 = self.node2 if node2 is None else node2
server1 = getattr(node1, 'server', 'localhost')
server2 = getattr(node2, 'server', 'localhost')
if server1 == server2:
# Link within same server
return Link.makeIntfPair(intfname1,
intfname2,
addr1,
addr2,
node1,
node2,
deleteIntfs=deleteIntfs)
# Otherwise, make a tunnel
self.tunnel = self.makeTunnel(node1, node2, intfname1, intfname2,
addr1, addr2)
return self.tunnel
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 add(self, node, port=None, intfName=None, mode=None):
"""Connect Mininet node to the segment.
node: Mininet node
port: node port number (optional)
intfName: node tap interface name (optional)
mode: TapBridge mode (UseLocal or UseBridge) (optional)"""
# Check if this Mininet node has assigned an underlying ns-3 node.
if hasattr(node, 'nsNode') and node.nsNode is not None:
# If it is assigned, go ahead.
pass
else:
# If not, create new ns-3 node and assign it to this Mininet node.
node.nsNode = ns.network.Node()
allNodes.append(node)
# Create ns-3 device.
device = ns.csma.CsmaNetDevice()
# Create queue used in the device.
queue = ns.network.DropTailQueue()
# Connect this device to the segment's channel.
device.Attach(self.channel)
# Set ns-3 device to use created queue.
device.SetQueue(queue)
# Add this device to the ns-3 node.
node.nsNode.AddDevice(device)
# If port number is not specified...
if port is None:
# ...obtain it automatically.
port = node.newPort()
# If interface name is not specified...
if intfName is None:
# ...obtain it automatically.
intfName = Link.intfName(node, port) # classmethod
# In the specified Mininet node, create TBIntf bridged with the 'device'.
tb = TBIntf(intfName, node, port, node.nsNode, device, mode)
return tb
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 do_AddNode(self, line):
id = len(P2PNet.hosts)
newHost = P2PNet.addHost("h%ds%d" % (id, id))
switch = P2PNet.switches[0]
P2PNet.addLink(switch, newHost)
slink = Link(switch, newHost)
switch.attach(slink)
switch.start(P2PNet.controllers)
newHost.configDefault(defaultRoute=newHost.defaultIntf())
print(P2PNet.hosts[0].cmd("ping -c1 %s" % newHost.IP())) #important!!!
print(newHost.cmd("ping -c1 10.0.0.1"))
cmd = xtermCMD(newHost.IP(), PORT, P2PNet.hosts[0].IP(), PORT, MODE)
print(cmd)
newHost.cmd(cmd % (id))
print("Started new node: %s" % newHost)
def status( self ):
"Detailed representation of link"
if self.tunnel:
if self.tunnel.poll() is not None:
status = "Tunnel EXITED %s" % self.tunnel.returncode
else:
status = "Tunnel Running (%s: %s)" % (
self.tunnel.pid, self.cmd )
else:
status = "OK"
result = "%s %s" % ( Link.status( self ), status )
return result
def connectToRootNS( net, ip='10.123.123.1', mac='00123456789A', prefixLen=8, routes=['10.0.0.0/8']):
print "*** Creating controller"
c0 = net.addController( 'c0', ip='127.0.0.1', port=6633 )
rootswitch = net.addSwitch('roots1',)
rootswitch.dpid = 'FFFFFFFFFFFFFFFF'
# Connect hosts to root namespace via switch. Starts network.
# network: Mininet() network object
# ip: IP address for root namespace node
# prefixLen: IP address prefix length (e.g. 8, 16, 24)
# routes: host networks to route to"
# Create a node in root namespace and link to switch 0
root = Node( 'root', inNamespace=False )
intf = Link( root, rootswitch ).intf1
intf.setMAC(mac)
root.setIP( ip, prefixLen, intf )
print "*** Added Interface", str(intf), "Connected To Root-NameSpace"
fixNetworkManager(str(intf))
for host in net.hosts:
net.addLink(host,rootswitch)
# Add routes from root ns to hosts
for route in routes:
root.cmd( 'route add -net ' + route + ' dev ' + str( intf ) )
root.cmd('service network-manager restart')
return rootswitch
def makeIntfPair( self, intfname1, intfname2, addr1=None, addr2=None,
node1=None, node2=None, deleteIntfs=True ):
"""Create pair of interfaces
intfname1: name of interface 1
intfname2: name of interface 2
(override this method [and possibly delete()]
to change link type)"""
node1 = self.node1 if node1 is None else node1
node2 = self.node2 if node2 is None else node2
server1 = getattr( node1, 'server', 'localhost' )
server2 = getattr( node2, 'server', 'localhost' )
if server1 == server2:
# Link within same server
Link.makeIntfPair( intfname1, intfname2, addr1, addr2,
node1, node2, deleteIntfs=deleteIntfs )
# Need to reduce the MTU of all emulated hosts to 1450 for GRE
# tunneling, otherwise packets larger than 1400 bytes cannot be
# successfully transmitted through the tunnel.
node1.cmd('ip link set dev %s mtu 1450' % intfname1)
node2.cmd('ip link set dev %s mtu 1450' % intfname2)
else:
# Otherwise, make a tunnel
self.makeTunnel( node1, node2, intfname1, intfname2, addr1, addr2 )
self.tunnel = 1
def add( self, node, port=None, intfName=None ):
if hasattr( node, 'nsNode' ) and node.nsNode is not None:
pass
else:
node.nsNode = ns.network.Node()
allNodes.append( node )
device = ns.network.SimpleNetDevice()
device.SetChannel(self.channel)
device.SetAddress (ns.network.Mac48Address.Allocate ())
node.nsNode.AddDevice(device)
if port is None:
port = node.newPort()
if intfName is None:
intfName = Link.intfName( node, port ) # classmethod
tb = TBIntf( intfName, node, port, node.nsNode, device )
return tb
def makeIntfPair( self, intfname1, intfname2, addr1=None, addr2=None,
node1=None, node2=None, deleteIntfs=True ):
"""Create pair of interfaces
intfname1: name of interface 1
intfname2: name of interface 2
(override this method [and possibly delete()]
to change link type)"""
node1 = self.node1 if node1 is None else node1
node2 = self.node2 if node2 is None else node2
server1 = getattr( node1, 'server', 'localhost' )
server2 = getattr( node2, 'server', 'localhost' )
if server1 == server2:
# Link within same server
return Link.makeIntfPair( intfname1, intfname2, addr1, addr2,
node1, node2, deleteIntfs=deleteIntfs )
# Otherwise, make a tunnel
self.tunnel = self.makeTunnel( node1, node2, intfname1, intfname2,
addr1, addr2 )
return self.tunnel
def add( self, node, phyHelper, macHelper, port=None, intfName=None ):
if phyHelper is None or macHelper is None:
warn( "phyHelper and macHelper must not be none.\n" )
return None
if hasattr( node, 'nsNode' ) and node.nsNode is not None:
pass
else:
node.nsNode = ns.network.Node()
allNodes.append( node )
phyHelper.SetChannel (channel = self.channel)
device = self.wifiHelper.Install (phyHelper, macHelper, node.nsNode).Get(0)
node.nsNode.AddDevice (device)
device.SetAddress (ns.network.Mac48Address.Allocate ())
node.nsNode.AddDevice (device)
if port is None:
port = node.newPort()
if intfName is None:
intfName = Link.intfName( node, port ) # classmethod
tb = TBIntf( intfName, node, port, node.nsNode, device)
return tb
h0 = Host( 'h0' )
h1 = Host( 'h1' )
h2 = Host( 'h2' )
h3 = Host( 'h3' )
s0 = OVSKernelSwitch( 's0' ,inNamespace=False )
s1 = OVSKernelSwitch( 's1' ,inNamespace=False )
s2 = OVSKernelSwitch( 's2', inNamespace=False )
s3 = OVSKernelSwitch( 's3' ,inNamespace=False )
c0 = RemoteController( 'c0', ip = '10.108.100.195' )
c1 = RemoteController( 'c1', ip = '10.108.100.248' )
c2 = RemoteController( 'c2', ip = '10.108.102.176' )
c3 = RemoteController( 'c3', ip = '10.108.101.48' )
l1 = Link( h0, s1 )
Link( h1, s1 )
Link( h2, s2 )
Link( h3, s3 )
Link( s0, s1 )
Link( s0, s2 )
Link( s0, s3 )
h0.setIP( '10.1.0.1/16' )
h1.setIP( '10.1.0.2/16' )
h2.setIP( '10.2.0.1/16' )
h3.setIP( '10.3.0.1/16' )
print h0.cmd('ifconfig')
c0.start()
c1.start()
