regular l2 switch on mininet

set-fail-mode.py

#!/usr/bin/env python2
from mininet.topo import Topo
from mininet.net import Mininet
from mininet.link import TCLink
from mininet.log import setLogLevel, info
from mininet.node import Controller, RemoteController
from mininet.cli import CLI
from mininet.link import Intf
from mininet.util import dumpNodeConnections

def MininetTopo():
    '''
    Prepare Your Topology
    '''
    net = Mininet (topo=None, build=False)

    info("Create Host node\n")
    teacher1 = net.addHost('teacher1', ip='10.0.0.1')
    teacher2 = net.addHost('teacher2', ip='10.0.0.2')
    student1 = net.addHost('student1', ip='10.0.0.3')
    student2 = net.addHost('student2', ip='10.0.0.4')

    info("Create Switch node\n")
    info("Method 1: Use addSwitch to set-fail-mode\n")
    switch1 = net.addSwitch('ovs1', protocols='OpenFlow13', failMode='standalone')
    switch2 = net.addSwitch('ovs2', protocols='OpenFlow13', failMode='standalone')
    switch3 = net.addSwitch('ovs3', protocols='OpenFlow13', failMode='standalone')

    info("Link switch to host\n")
    net.addLink(switch1, student1)
    net.addLink(switch3, student2)
    net.addLink(switch1, teacher1)
    net.addLink(switch3, teacher2)
    net.addLink(switch1, switch2)
    net.addLink(switch2, switch3)


    '''
    Working your topology
    '''
    info("Start network\n")
    net.start()

    info("Dumping host connections\n")
    dumpNodeConnections(net.hosts)
    
    #info("Method 2: Use command line to set-fail-mode\n")
    #switch1.cmdPrint("ovs-vsctl set-fail-mode ovs1 standalone")
    #switch2.cmdPrint("ovs-vsctl set-fail-mode ovs2 standalone")
    #switch3.cmdPrint("ovs-vsctl set-fail-mode ovs3 standalone")
    
    info("Testing network connectivity\n")
    net.pingAll()

    '''
    Clean mininet
    '''
    net.stop()


if __name__ == '__main__':
    setLogLevel('info')
    MininetTopo()