Topology
  IPClassA
  subnet_address=0
  Topology
  IPClassA
  Device
  model_name=1
  Topology
  IPClassB
  Device
  model_name=2
  Topology
  IPClassB
  Device
  

##</code><code>##

  Topology
  IPClassA
  subnet_address=0
  Device
  model_name=1
  Topology
  IPClassB
  Device
  model_name=2
  Device