def five_line():
# parameters
Sim.scheduler.reset()
# setup network
net = Network('../networks/five-nodes-line.txt', DVRouter)
for n in net.nodes:
net.nodes[n].add_protocol(protocol="dvrouting",
handler=RoutingApp(net.nodes[n]))
Sim.scheduler.add(delay=11, event=None, handler=end_simulation)
# send packet from n2 to n5 and from n5 to n2
p = Packet(destination_address=net.nodes['n5'].get_address('n4'),
length=100)
Sim.scheduler.add(10.1, event=p, handler=net.nodes['n2'].send_packet)
p = Packet(destination_address=net.nodes['n2'].get_address('n3'),
length=100)
Sim.scheduler.add(10.2, event=p, handler=net.nodes['n5'].send_packet)
# send packet from n2 to n4 and from n4 to n2
p = Packet(destination_address=net.nodes['n4'].get_address('n3'),
length=100)
Sim.scheduler.add(10.3, event=p, handler=net.nodes['n2'].send_packet)
p = Packet(destination_address=net.nodes['n2'].get_address('n3'),
length=100)
Sim.scheduler.add(10.4, event=p, handler=net.nodes['n4'].send_packet)
# run the simulation
Sim.scheduler.run()
def lan():
# parameters
Sim.scheduler.reset()
h1 = Host('h1')
h1.add_protocol('arp', ARPApp(h1))
h2 = Host('h2')
h2.add_protocol('arp', ARPApp(h2))
h1.add_link(
Link(mac_address='AA-AA-AA-AA',
address=IPAddress('1.1.1.2'),
prefix_len=28,
startpoint=h1,
endpoint=h2))
h2.add_link(
Link(mac_address='BB-BB-BB-BB',
address=IPAddress('1.1.1.5'),
prefix_len=28,
startpoint=h2,
endpoint=h1))
# send packet from h1 to h2
p = Packet(destination_address=h2.get_address('h1'), length=100)
Sim.scheduler.add(1.1, event=p, handler=h1.send_packet)
p = Packet(destination_address=h1.get_address('h2'), length=100)
Sim.scheduler.add(1.2, event=p, handler=h2.send_packet)
# run the simulation
Sim.scheduler.run()
def main():
# parameters
Sim.scheduler.reset()
# setup network
net = Network('../networks/five-nodes.txt')
# get nodes
n1 = net.get_node('n1')
n2 = net.get_node('n2')
n3 = net.get_node('n3')
n4 = net.get_node('n4')
n5 = net.get_node('n5')
# setup broadcast application
b1 = BroadcastApp(n1)
n1.add_protocol(protocol="broadcast", handler=b1)
b2 = BroadcastApp(n2)
n2.add_protocol(protocol="broadcast", handler=b2)
b3 = BroadcastApp(n3)
n3.add_protocol(protocol="broadcast", handler=b3)
b4 = BroadcastApp(n4)
n4.add_protocol(protocol="broadcast", handler=b4)
b5 = BroadcastApp(n5)
n5.add_protocol(protocol="broadcast", handler=b5)
# send a broadcast packet from 1 with TTL 2, so everyone should get it
p = Packet(source_address=n1.get_address('n2'),
destination_address=BROADCAST_IP_ADDRESS,
ident=1,
ttl=2,
protocol='broadcast',
length=100)
Sim.scheduler.add(delay=0, event=p, handler=n1.send_packet)
# send a broadcast packet from 1 with TTL 1, so just nodes 2 and 3
# should get it
p = Packet(source_address=n1.get_address('n2'),
destination_address=BROADCAST_IP_ADDRESS,
ident=2,
ttl=1,
protocol='broadcast',
length=100)
Sim.scheduler.add(delay=1, event=p, handler=n1.send_packet)
# send a broadcast packet from 3 with TTL 1, so just nodes 1, 4, and 5
# should get it
p = Packet(source_address=n3.get_address('n1'),
destination_address=BROADCAST_IP_ADDRESS,
ident=3,
ttl=1,
protocol='broadcast',
length=100)
Sim.scheduler.add(delay=2, event=p, handler=n3.send_packet)
# run the simulation
Sim.scheduler.run()
def run1(filename):
Sim.scheduler.reset()
net = Network(filename)
# setup routes
a = net.get_node('a')
b = net.get_node('b')
c = net.get_node('c')
a.add_forwarding_entry(c.get_address('b'), a.links[0])
b.add_forwarding_entry(c.get_address('b'), b.links[1])
# setup app
PH = PacketHandler()
net.nodes['c'].add_protocol(protocol="delay", handler=PH)
amount_data = 8 * 1000000
packet_size = 8 * 1000
packet2send = amount_data / packet_size
delay_amount = packet_size / a.links[0].bandwidth
count = 0
for i in range(int(packet2send)):
count += 1
p = Packet(destination_address=c.get_address('b'),
protocol='delay',
ident=i + 1,
length=1000)
Sim.scheduler.add(delay=(i * delay_amount),
event=p,
handler=a.send_packet)
Sim.scheduler.run()
def generic_3node(file_name, time_to_send_packet):
# parameters
Sim.scheduler.reset()
# setup network
net = Network(file_name)
# setup routes
n1 = net.get_node('n1')
n2 = net.get_node('n2')
n3 = net.get_node('n3')
n1.add_forwarding_entry(address=n2.get_address('n1'), link=n1.links[0])
n1.add_forwarding_entry(address=n3.get_address('n2'), link=n1.links[0])
n2.add_forwarding_entry(address=n1.get_address('n2'), link=n2.links[0])
n2.add_forwarding_entry(address=n3.get_address('n2'), link=n2.links[1])
n3.add_forwarding_entry(address=n2.get_address('n3'), link=n2.links[0])
# setup app
d = DelayHandler()
net.nodes['n3'].add_protocol(protocol="delay", handler=d)
# send 10,000 packets
for i in range(1, 10001):
p = Packet(destination_address=n3.get_address('n2'), ident=i, protocol='delay', length=1000)
calc_delay = (i - 1) * time_to_send_packet
Sim.scheduler.add(delay=calc_delay, event=p, handler=n1.send_packet)
# run the simulation
Sim.scheduler.run()
def main():
# parameters
Sim.scheduler.reset()
# setup network
net = Network('../networks/one-hop.txt')
# setup routes
n1 = net.get_node('n1')
n2 = net.get_node('n2')
n1.add_forwarding_entry(address=n2.get_address('n1'), link=n1.links[0])
n2.add_forwarding_entry(address=n1.get_address('n2'), link=n2.links[0])
# setup app
d = DelayHandler()
net.nodes['n2'].add_protocol(protocol="delay", handler=d)
# send one packet
p = Packet(destination_address=n2.get_address('n1'),
ident=1,
protocol='delay',
length=1000)
Sim.scheduler.add(delay=0, event=p, handler=n1.send_packet)
# take the link down
Sim.scheduler.add(delay=1, event=None, handler=n1.get_link('n2').down)
# send one packet (it won't go through)
p = Packet(destination_address=n2.get_address('n1'),
ident=1,
protocol='delay',
length=1000)
Sim.scheduler.add(delay=1.1, event=p, handler=n1.send_packet)
# bring the link up
Sim.scheduler.add(delay=2, event=None, handler=n1.get_link('n2').up)
# send one packet (and now it goes through)
p = Packet(destination_address=n2.get_address('n1'),
ident=1,
protocol='delay',
length=1000)
Sim.scheduler.add(delay=2.1, event=p, handler=n1.send_packet)
# run the simulation
Sim.scheduler.run()
def five_ring():
# parameters
Sim.scheduler.reset()
logging.getLogger('bene.node').setLevel(logging.INFO)
# setup network
net = Network('../networks/five-nodes-ring.txt', DVRouter)
for n in net.nodes:
net.nodes[n].add_protocol(protocol="dvrouting",
handler=RoutingApp(net.nodes[n]))
Sim.scheduler.add(delay=20, event=None, handler=end_simulation)
# send packet from n2 to n5 and from n5 to n2
p = Packet(destination_address=net.nodes['n5'].get_address('n4'),
length=100)
Sim.scheduler.add(10.1, event=p, handler=net.nodes['n2'].send_packet)
p = Packet(destination_address=net.nodes['n2'].get_address('n3'),
length=100)
Sim.scheduler.add(10.2, event=p, handler=net.nodes['n5'].send_packet)
# send packet from n4 to n2 and from n4 to n2
p = Packet(destination_address=net.nodes['n4'].get_address('n3'),
length=100)
Sim.scheduler.add(10.3, event=p, handler=net.nodes['n2'].send_packet)
p = Packet(destination_address=net.nodes['n2'].get_address('n3'),
length=100)
Sim.scheduler.add(10.4, event=p, handler=net.nodes['n4'].send_packet)
# at t = 11, bring down (both sides of) link between n5 and n1
Sim.scheduler.add(11,
event=None,
handler=net.nodes['n5'].get_link('n1').down)
Sim.scheduler.add(11,
event=None,
handler=net.nodes['n1'].get_link('n5').down)
# send packet from n2 to n5 and from n5 to n2 - should fail
p = Packet(destination_address=net.nodes['n5'].get_address('n4'),
length=100)
Sim.scheduler.add(12.1, event=p, handler=net.nodes['n2'].send_packet)
p = Packet(destination_address=net.nodes['n2'].get_address('n3'),
length=100)
Sim.scheduler.add(12.2, event=p, handler=net.nodes['n5'].send_packet)
# send packet from n2 to n5 and from n5 to n2 - should take different path
p = Packet(destination_address=net.nodes['n5'].get_address('n4'),
length=100)
Sim.scheduler.add(15.1, event=p, handler=net.nodes['n2'].send_packet)
p = Packet(destination_address=net.nodes['n2'].get_address('n3'),
length=100)
Sim.scheduler.add(15.2, event=p, handler=net.nodes['n5'].send_packet)
# run the simulation
Sim.scheduler.run()
def handle(self, event):
# quit if done
now = Sim.scheduler.current_time()
if (now - self.start) > self.duration:
return
# generate a packet
self.ident += 1
p = Packet(destination_address=self.destination, ident=self.ident, protocol='delay', length=1000)
Sim.scheduler.add(delay=0, event=p, handler=self.node.send_packet)
# schedule the next time we should generate a packet
Sim.scheduler.add(delay=random.expovariate(self.load), event='generate', handler=self.handle)
def generic_4packets(file_name):
# parameters
Sim.scheduler.reset()
# setup network
net = Network(file_name)
# setup routes
n1 = net.get_node('n1')
n2 = net.get_node('n2')
n1.add_forwarding_entry(address=n2.get_address('n1'), link=n1.links[0])
n2.add_forwarding_entry(address=n1.get_address('n2'), link=n2.links[0])
# setup app
d = DelayHandler()
net.nodes['n2'].add_protocol(protocol="delay", handler=d)
# send three packets
# packet 1
p = Packet(destination_address=n2.get_address('n1'), ident=1, protocol='delay', length=1000)
Sim.scheduler.add(delay=0, event=p, handler=n1.send_packet)
# packet 2
p = Packet(destination_address=n2.get_address('n1'), ident=2, protocol='delay', length=1000)
Sim.scheduler.add(delay=0, event=p, handler=n1.send_packet)
# packet 3
p = Packet(destination_address=n2.get_address('n1'), ident=3, protocol='delay', length=1000)
Sim.scheduler.add(delay=0, event=p, handler=n1.send_packet)
# send 4th delayed packet
p = Packet(destination_address=n2.get_address('n1'), ident=4, protocol='delay', length=1000)
Sim.scheduler.add(delay=2, event=p, handler=n1.send_packet)
# run the simulation
Sim.scheduler.run()
def router():
# parameters
Sim.scheduler.reset()
h1 = Host('h1', default_gateway=IPAddress('1.1.1.1'))
h1.add_protocol('arp', ARPApp(h1))
h2 = Host('h2', default_gateway=IPAddress('1.1.1.1'))
h2.add_protocol('arp', ARPApp(h2))
h3 = Host('h3', default_gateway=IPAddress('2.2.2.1'))
h3.add_protocol('arp', ARPApp(h3))
h4 = Host('h4', default_gateway=IPAddress('2.2.2.1'))
h4.add_protocol('arp', ARPApp(h4))
s1 = Switch('s1')
s2 = Switch('s2')
n1 = Node('n1')
n1.add_protocol('arp', ARPApp(n1))
n2 = Node('n2')
n2.add_protocol('arp', ARPApp(n2))
h1.add_link(
Link(mac_address='AA-AA-AA-AA',
address=IPAddress('1.1.1.2'),
prefix_len=28,
startpoint=h1,
endpoint=s1))
s1.add_link(Link(startpoint=s1, endpoint=h1))
h2.add_link(
Link(mac_address='BB-BB-BB-BB',
address=IPAddress('1.1.1.5'),
prefix_len=28,
startpoint=h2,
endpoint=s1))
s1.add_link(Link(startpoint=s1, endpoint=h2))
n1.add_link(
Link(mac_address='CC-CC-CC-CC',
address=IPAddress('1.1.1.1'),
prefix_len=28,
startpoint=n1,
endpoint=s1))
s1.add_link(Link(startpoint=s1, endpoint=n1))
h3.add_link(
Link(mac_address='DD-DD-DD-DD',
address=IPAddress('2.2.2.2'),
prefix_len=28,
startpoint=h3,
endpoint=s2))
s2.add_link(Link(startpoint=s2, endpoint=h3))
h4.add_link(
Link(mac_address='EE-EE-EE-EE',
address=IPAddress('2.2.2.5'),
prefix_len=28,
startpoint=h4,
endpoint=s2))
s2.add_link(Link(startpoint=s2, endpoint=h4))
n2.add_link(
Link(mac_address='00-00-00-00',
address=IPAddress('2.2.2.1'),
prefix_len=28,
startpoint=n2,
endpoint=s2))
s2.add_link(Link(startpoint=s2, endpoint=n2))
n1.add_link(
Link(mac_address='11-11-11-11',
address=IPAddress('3.3.3.1'),
prefix_len=30,
startpoint=n1,
endpoint=n2))
n2.add_link(
Link(mac_address='22-22-22-22',
address=IPAddress('3.3.3.2'),
prefix_len=30,
startpoint=n2,
endpoint=n1))
n1.add_forwarding_entry(Subnet(IPAddress('2.2.2.0'), 28),
n1.get_link('n2'), IPAddress('3.3.3.2'))
n2.add_forwarding_entry(Subnet(IPAddress('1.1.1.0'), 28),
n2.get_link('n1'), IPAddress('3.3.3.1'))
p = Packet(destination_address=h2.get_address('s1'), length=100)
Sim.scheduler.add(1.1, event=p, handler=h1.send_packet)
p = Packet(destination_address=h3.get_address('s2'), length=100)
Sim.scheduler.add(1.2, event=p, handler=h1.send_packet)
# run the simulation
Sim.scheduler.run()
def fifteen():
# parameters
Sim.scheduler.reset()
# setup network
net = Network('../networks/fifteen-nodes.txt', DVRouter)
for n in net.nodes:
net.nodes[n].add_protocol(protocol="dvrouting",
handler=RoutingApp(net.nodes[n]))
Sim.scheduler.add(delay=40, event=None, handler=end_simulation)
# send packet from n9 to n10 and from n10 to n9
p = Packet(destination_address=net.nodes['n10'].get_address('n1'),
length=100)
Sim.scheduler.add(20.0, event=p, handler=net.nodes['n9'].send_packet)
p = Packet(destination_address=net.nodes['n9'].get_address('n6'),
length=100)
Sim.scheduler.add(20.1, event=p, handler=net.nodes['n10'].send_packet)
# send packet from n9 to n11 and from n11 to n9
p = Packet(destination_address=net.nodes['n11'].get_address('n4'),
length=100)
Sim.scheduler.add(20.2, event=p, handler=net.nodes['n9'].send_packet)
p = Packet(destination_address=net.nodes['n9'].get_address('n6'),
length=100)
Sim.scheduler.add(20.3, event=p, handler=net.nodes['n11'].send_packet)
# send packet from n9 to n12 and from n12 to n9
p = Packet(destination_address=net.nodes['n12'].get_address('n5'),
length=100)
Sim.scheduler.add(20.4, event=p, handler=net.nodes['n9'].send_packet)
p = Packet(destination_address=net.nodes['n9'].get_address('n6'),
length=100)
Sim.scheduler.add(20.5, event=p, handler=net.nodes['n12'].send_packet)
# send packet from n9 to n13 and from n13 to n9
p = Packet(destination_address=net.nodes['n13'].get_address('n5'),
length=100)
Sim.scheduler.add(20.6, event=p, handler=net.nodes['n9'].send_packet)
p = Packet(destination_address=net.nodes['n9'].get_address('n6'),
length=100)
Sim.scheduler.add(20.7, event=p, handler=net.nodes['n13'].send_packet)
# send packet from n9 to n14 and from n14 to n9
p = Packet(destination_address=net.nodes['n14'].get_address('n2'),
length=100)
Sim.scheduler.add(20.8, event=p, handler=net.nodes['n9'].send_packet)
p = Packet(destination_address=net.nodes['n9'].get_address('n6'),
length=100)
Sim.scheduler.add(20.9, event=p, handler=net.nodes['n14'].send_packet)
# send packet from n7 to n15 and from n15 to n7
p = Packet(destination_address=net.nodes['n15'].get_address('n14'),
length=100)
Sim.scheduler.add(21.0, event=p, handler=net.nodes['n7'].send_packet)
p = Packet(destination_address=net.nodes['n7'].get_address('n8'),
length=100)
Sim.scheduler.add(21.1, event=p, handler=net.nodes['n15'].send_packet)
# at t = 22, bring down link between n2 and n8
Sim.scheduler.add(22,
event=None,
handler=net.nodes['n8'].get_link('n2').down)
Sim.scheduler.add(22,
event=None,
handler=net.nodes['n2'].get_link('n8').down)
# send packet from n7 to n15 and from n15 to n7 - these should fail
p = Packet(destination_address=net.nodes['n15'].get_address('n14'),
length=100)
Sim.scheduler.add(23.1, event=p, handler=net.nodes['n7'].send_packet)
p = Packet(destination_address=net.nodes['n7'].get_address('n8'),
length=100)
Sim.scheduler.add(23.2, event=p, handler=net.nodes['n15'].send_packet)
# send packet from n7 to n15 and from n15 to n7 - these should get there through new paths
p = Packet(destination_address=net.nodes['n15'].get_address('n14'),
length=100)
Sim.scheduler.add(30.1, event=p, handler=net.nodes['n7'].send_packet)
p = Packet(destination_address=net.nodes['n7'].get_address('n8'),
length=100)
Sim.scheduler.add(30.2, event=p, handler=net.nodes['n15'].send_packet)
# run the simulation
Sim.scheduler.run()