dc1 = net.addDatacenter("dc1")
dc2 = net.addDatacenter("dc2")
s1 = net.addSwitch("s1")
net.addLink(dc1, s1, delay="10ms")
net.addLink(dc2, s1, delay="20ms")
dc1 = net.addDatacenter("dc1")
dc2 = net.addDatacenter("dc2")
s1 = net.addSwitch("s1")
net.addLink(dc1, s1, delay="10ms")
net.addLink(dc2, s1, delay="20ms")