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ThreePktTopo_with_Taps.py
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ThreePktTopo_with_Taps.py
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from mininet.topo import Topo
from mininet.net import Mininet
from mininet.log import setLogLevel, info
from mininet.node import RemoteController
from mininet.link import Link, Intf
from mininet.cli import CLI
class NullIntf(Intf):
"A dummy interface with a blank name that doesn't do any configuration"
def __init__(self, name, **params):
self.name = ''
self.node = "alaki"
class NullLink(Link):
"A dummy link that doesn't touch either interface"
def makeIntfPair(cls, intf1, intf2, *args, **kwargs):
pass
def delete(self):
pass
class ThreePktTopoScratch(Topo):
def addIntf(self, switch, intfName):
"Add intf intfName to switch"
self.addLink(switch, switch, cls=NullLink,
intfName1=intfName, cls2=NullIntf)
def __init__(self):
self.NUM_OF_HOSTS = 3 # number of hosts
self.NUM_OF_PKT_SW = 3 # number of packet swiches
self.NUM_OF_OPT_SW = 3 # number of optical swiches
# Initialize topology
Topo.__init__(self)
h1 = self.addHost('h1')
h2 = self.addHost('h2')
h3 = self.addHost('h3')
opts = dict(protocols='OpenFlow13')
# Adding switches
p1 = self.addSwitch('p1', dpid="0000000000000001", opts=opts)
p2 = self.addSwitch('p2', dpid="0000000000000002", opts=opts)
p3 = self.addSwitch('p3', dpid="0000000000000003", opts=opts)
# Add links from hosts to OVS
self.addLink(p1, h1)
self.addLink(p2, h2)
self.addLink(p3, h3)
# addding switches to gether
self.addLink(p2, p3)
self.addLink(p2, p1)
# add links from ovs to linc-oe
self.addIntf(p1, 'tap1')
self.addIntf(p2, 'tap2')
self.addIntf(p3, 'tap3')
# if you use, sudo mn --custom custom/optical.py, then register the topo:
topos = {'optical': (lambda: ThreePktTopoScratch())}
def run():
c = RemoteController('c', '0.0.0.0', 6633)
net = Mininet(topo=ThreePktTopoScratch(), controller=None, autoSetMacs=True)
net.addController(c)
net.start()
# installStaticFlows( net )
CLI(net)
net.stop()
# if the script is run directly (sudo custom/optical.py):
if __name__ == '__main__':
setLogLevel('info')
run()