mininet 多径仿真双路由双网卡

网络拓扑：

仿真结果：

python代码：

#!/usr/bin/python

from mininet.net import Mininet
from mininet.node import Controller, RemoteController, OVSController
from mininet.node import CPULimitedHost, Host, Node
from mininet.node import OVSKernelSwitch, UserSwitch
from mininet.node import IVSSwitch
from mininet.cli import CLI
from mininet.log import setLogLevel, info
from mininet.link import TCLink, Intf
from subprocess import call

def myNetwork():

    net = Mininet( topo=None,
                   build=False,
                   ipBase='10.0.0.0/8')

    info( '*** Adding controller
' )
    info( '*** Add switches
')
    r1 = net.addHost('r1', cls=Node, ip='0.0.0.0')
    r1.cmd('sysctl -w net.ipv4.ip_forward=1')
    r2 = net.addHost('r2', cls=Node, ip='0.0.0.0')
    r2.cmd('sysctl -w net.ipv4.ip_forward=1')

    info( '*** Add hosts
')
    h1 = net.addHost('h1', cls=Host, ip='10.0.0.1', defaultRoute=None)
    h2 = net.addHost('h2', cls=Host, ip='10.0.0.2', defaultRoute=None)

    info( '*** Add links
')
    net.addLink(h1, r1)
    net.addLink(r1, h2)
    net.addLink(h1, r2)
    net.addLink(r2, h2)

    info( '*** Starting network
')
    net.build()
    info( '*** Starting controllers
')
    for controller in net.controllers:
        controller.start()

    info( '*** Starting switches
')

    info( '*** Post configure switches and hosts
')
    h1.cmd('ifconfig h1-eth0 10.0.0.1/24')
    h1.cmd('ifconfig h1-eth1 192.168.0.1/24')


    r1.cmd('ifconfig r1-eth0 10.0.0.2/24')
    r1.cmd('ifconfig r1-eth1 10.10.10.2/24')

    r2.cmd('ifconfig r2-eth0 192.168.0.2/24')
    r2.cmd('ifconfig r2-eth1 192.168.10.2/24')


    h2.cmd('ifconfig h2-eth0 10.10.10.1/24')
    h2.cmd('ifconfig h2-eth1 192.168.10.1/24')


    #h1.cmd('ip route add 10.0.0.1/24 dev h1-eth0 table 520')
    #h1.cmd('ip route add default via 10.0.0.2 dev h1-eth0 table 520')

    #h1.cmd('ip route add 192.168.10.1/24 dev h1-eth1 table 521')
    #h1.cmd('ip route add default via 192.168.0.2 dev h1-eth1 table 521')

    #h2.cmd('ip route add 10.10.10.2/24 dev h2-eth0 table 522')
    #h2.cmd('ip route add default via 10.10.10.2 dev h2-eth0 table 522')

    #h2.cmd('ip route add 192.168.10.2/24 dev h2-eth1 table 523')
    #h2.cmd('ip route add default via 192.168.10.2 dev h2-eth1 table 523')
    h1.cmd("ip route flush all proto static scope global")
    
    h1.cmd('ip route add 10.0.0.0/24 via 10.0.0.2 dev h1-eth0 table 520')
    h1.cmd('ip route add default via 10.0.0.2 dev h1-eth0 table 520')

    h1.cmd('ip route add 192.168.0.0/24 via 192.168.0.2 dev h1-eth1 table 521')
    h1.cmd('ip route add default via 192.168.0.2 dev h1-eth1 table 521')

    h1.cmd('ip route add 10.10.10.0/24 via 10.0.0.2 dev h1-eth0')
    h1.cmd('ip route add 192.168.10.0/24 via 192.168.0.2 dev h1-eth1')

    h1.cmd('ip rule add from 10.0.0.1 table 520')
    h1.cmd('ip rule add from 192.168.0.1 table 521')
    # h1.cmd("route add default gw 10.0.0.2")
    


    h2.cmd('ip route add 10.10.10.0/24 via 10.10.10.2 dev h2-eth0 table 522')
    h2.cmd('ip route add default via 10.10.10.2 dev h2-eth0 table 522')

    h2.cmd('ip route add 192.168.10.0/24 via 192.168.10.2 dev h2-eth1 table 523')
    h2.cmd('ip route add default via 192.168.10.2 dev h2-eth1 table 523')

    h2.cmd('ip route add 10.0.0.0/24 via 10.10.10.2 dev h2-eth0')
    h2.cmd('ip route add 192.168.0.0/24 via 192.168.10.2 dev h2-eth1')

    h1.cmd('ip rule add from 10.10.10.1 table 522')
    h1.cmd('ip rule add from 192.168.10.2 table 523')
    # h2.cmd("route add default gw 10.10.10.2")

    CLI(net)
    net.stop()

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