47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
"""Custom topology example
|
|
|
|
author: Brandon Heller (brandonh@stanford.edu)
|
|
|
|
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, Node
|
|
|
|
class MyTopo( Topo ):
|
|
"Simple topology example."
|
|
|
|
def __init__( self, enable_all = True ):
|
|
"Create custom topo."
|
|
|
|
# Add default members to class.
|
|
super( MyTopo, self ).__init__()
|
|
|
|
# Set Node IDs for hosts and switches
|
|
leftHost = 1
|
|
leftSwitch = 2
|
|
rightSwitch = 3
|
|
rightHost = 4
|
|
|
|
# Add nodes
|
|
self._add_node( leftSwitch, Node( is_switch=True ) )
|
|
self._add_node( rightSwitch, Node( is_switch=True ) )
|
|
self._add_node( leftHost, Node( is_switch=False ) )
|
|
self._add_node( rightHost, Node( is_switch=False ) )
|
|
|
|
# Add edges
|
|
self._add_edge( leftHost, leftSwitch )
|
|
self._add_edge( leftSwitch, rightSwitch )
|
|
self._add_edge( rightSwitch, rightHost )
|
|
|
|
# Consider all switches and hosts 'on'
|
|
self.enable_all()
|
|
|
|
|
|
topos = { 'mytopo': MyTopo }
|
|
|
|
# topos = { 'mytopo': ( lambda: MyTopo() ) } |