manuals/user-guide/src/main/asciidoc/nic/NIC_redirect_test_topology.adoc

   1 === Simple Mininet topology
   2
   3 [source,python]
   4 ----
   5 !/usr/bin/python
   6
   7 from mininet.topo import Topo
   8
   9 class SimpleTopology( Topo ):
  10     "Simple topology example."
  11
  12     def __init__( self ):
  13         "Create custom topo."
  14
  15         # <1>
  16         Topo.__init__( self )
  17
  18         # <2>
  19         Switch1 = self.addSwitch( 's1' )
  20         Switch2 = self.addSwitch( 's2' )
  21         Switch3 = self.addSwitch( 's3' )
  22         Switch4 = self.addSwitch( 's4' )
  23         Host11 = self.addHost( 'h1' )
  24         Host12 = self.addHost( 'h2' )
  25         Host21 = self.addHost( 'h3' )
  26         Host22 = self.addHost( 'h4' )
  27         Host23 = self.addHost( 'h5' )
  28         Service1 = self.addHost( 'srvc1' ) # <3>
  29
  30         # <4>
  31         self.addLink( Host11, Switch1 )
  32         self.addLink( Host12, Switch1 )
  33         self.addLink( Host21, Switch2 )
  34         self.addLink( Host22, Switch2 )
  35         self.addLink( Host23, Switch2 )
  36         self.addLink( Switch1, Switch2 )
  37         self.addLink( Switch2, Switch4 )
  38         self.addLink( Switch4, Switch3 )
  39         self.addLink( Switch3, Switch1 )
  40         self.addLink( Switch3, Service1 )
  41         self.addLink( Switch4, Service1 )
  42
  43
  44 topos = { 'simpletopology': ( lambda: SimpleTopology() ) }
  45 ----
  46 <1> Initialize topology
  47 <2> Add hosts and switches
  48 <3> Host used to represent the service
  49 <4> Add links
  50
  51 [quote]
  52 Source: https://gist.github.com/vinothgithub15/315d0a427d5afc39f2d7