test/csit/suites/l2switch/topologies/loop.py

   1 #!/usr/bin/python
   2
   3 # usage: sudo mn --controller=remote,ip=<controller_ip> --switch=ovsk,protocols=OpenFlow13 --custom <path to createtopo.py> --topo loop ...
   4
   5 from mininet.topo import Topo
   6 from mininet.net import Mininet
   7 from mininet.node import RemoteController
   8 from mininet.cli import CLI
   9
  10 class LoopTopo(Topo):
  11         def __init__(self, switches = 3, hosts_per = 1, **opts):
  12             Topo.__init__(self, **opts)
  13             sws = []
  14             hnum = 0
  15             for i in range(switches):
  16                 sw = self.addSwitch('s%s' % (i+ 1))
  17
  18                 for _ in range(hosts_per):
  19                     hnum += 1
  20                     host = self.addHost('h%s' % hnum)
  21                     self.addLink(sw, host)
  22
  23                 for rhs in sws:
  24                     self.addLink(sw, rhs)
  25
  26                 sws.append(sw)
  27
  28 topos = { 'loop': LoopTopo }