datacenter-topo

from mininet.net import Mininet
from mininet.cli import CLI
from mininet.link import TCLink

net = Mininet(link=TCLink)

coreSW = net.addSwitch('core0')
coreSW1 = net.addSwitch('core1')
accessSW = net.addSwitch('access0')
accessSW1 = net.addSwitch('access1')
aggSW = net.addSwitch('agg0')
aggSW1 = net.addSwitch('agg1')
torSwitch0 = net.addSwitch('tor0')
torSwitch1 = net.addSwitch('tor1')
torSwitch2 = net.addSwitch('tor2')
torSwitch3 = net.addSwitch('tor3')
host1 = net.addHost('h1')
host2 = net.addHost('h2')
host3 = net.addHost('h3')
host4 = net.addHost('h4')
net.addLink(coreSW, accessSW, bw=100)
net.addLink(coreSW, accessSW1, bw=100)
net.addLink(coreSW1, accessSW, bw=100)
net.addLink(coreSW1, accessSW1, bw=100)
net.addLink(accessSW,aggSW, bw=100)
net.addLink(accessSW, aggSW1, bw=100)
net.addLink(accessSW1,aggSW, bw=100)
net.addLink(accessSW1, aggSW1, bw=100)
net.addLink(aggSW, torSwitch0, bw=10)
net.addLink(aggSW, torSwitch1, bw=10)
net.addLink(aggSW, torSwitch2, bw=10)
net.addLink(aggSW, torSwitch3, bw=10)
net.addLink(aggSW1, torSwitch0, bw=10)
net.addLink(aggSW1, torSwitch1, bw=10)
net.addLink(aggSW1, torSwitch2, bw=10)
net.addLink(aggSW1, torSwitch3, bw=10)
net.addLink(torSwitch0, host1, bw=1)
net.addLink(torSwitch1, host2, bw=1)
net.addLink(torSwitch2, host3, bw=1)
net.addLink(torSwitch3, host4, bw=1)

net.start()
CLI(net)
net.stop()