Simple network topology using mininet

simpleNetworkTopo.py

'''
A custom topology consisting 6 hosts and 3 switches. Where main switch is connected to other two switches.
And 3-3 hosts connected to these 2 switches. Your system should have mininet installed.
'''
from mininet.topo import Topo

class MyTopo( Topo ):
  
  def __init__( self ):
    Topo.__init__(self)
    
    # add hosts
    h1 = self.addHost('h1')
    h2 = self.addHost('h2')
    h3 = self.addHost('h3')
    h4 = self.addHost('h4')
    h5 = self.addHost('h5')
    h6 = self.addHost('h6')
    
    # add switches
    s1 = self.addSwitch('s1')
    s2 = self.addSwitch('s2')
    s3 = self.addSwitch('s3')
    
    # add links
    self.addLink(h1,s2)
    self.addLink(h2,s2)
    self.addLink(h3,s2)
    self.addLink(h4,s3)
    self.addLink(h5,s3)
    self.addLink(h6,s3)
    self.addLink(s2,s1)
    self.addLink(s3,s1)
   
topos = { 'mytopo': ( lambda: MyTopo() ) }
# Use sudo mn --custom <simpleNetworkTopo.py> --topo mytopo