Question

How to design a SCADA network and integrate with the topology stated in the background. In terms of performance and data packets size.

Let's say for : topo-3sw-3host.py

Answer 1

"""Custom topology example
	Two directly connected switches plus a host for each switch:
	host --- switch --- switch --- host
	Adding the 'topos' dict with a key/value pair to generate our newly defined
	topology enables one to pass in '--topo=mytopo' from the command line.
	"""
	from mininet.topo import Topo
	class MyTopo( Topo ):
	"Simple topology example."
	def __init__( self ):
	"Create custom topo."
	# Initialize topology
	Topo.__init__( self )
	# Add hosts and switches
	leftHost = self.addHost( 'h1' )
	rightHost = self.addHost( 'h2' )
	middleHost = self.addHost( 'h3' )
	leftSwitch = self.addSwitch( 's3' )
	rightSwitch = self.addSwitch( 's5' )
	middleSwitch = self.addSwitch( 's4' )
	# Add links
	self.addLink( leftSwitch, middleSwitch )
	self.addLink( middleSwitch, rightSwitch )
	self.addLink( leftHost, leftSwitch )
	self.addLink( rightSwitch, rightHost )
	self.addLink( leftSwitch, middleHost )
	self.addLink( rightSwitch, middleHost )
	topos = { 'mytopo': ( lambda: MyTopo() ) }