主机之间无法ping通

如何解决主机之间无法ping通

我正在使用以下拓扑文件在 ryu 控制器 (ryu/ryu/app) 中执行 simple_monitor_13.py -

#!/usr/bin/env 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\n' )
    c0=net.addController(name='c0',controller=RemoteController,ip='127.0.0.1',protocol='tcp',port=6633)

    info( '*** Add switches\n')
    s1 = net.addSwitch('s1',cls=OVSKernelSwitch)
    s2 = net.addSwitch('s2',cls=OVSKernelSwitch)
    s3 = net.addSwitch('s3',cls=OVSKernelSwitch)
    s4 = net.addSwitch('s4',cls=OVSKernelSwitch)
    s5 = net.addSwitch('s5',cls=OVSKernelSwitch)

    info( '*** Add hosts\n')
    h1 = net.addHost('h1',cls=Host,ip='10.0.0.1',defaultRoute=None)
    h2 = net.addHost('h2',ip='10.0.0.2',defaultRoute=None)
    h3 = net.addHost('h3',ip='10.0.0.3',defaultRoute=None)
    h4 = net.addHost('h4',ip='10.0.0.4',defaultRoute=None)

    info( '*** Add links\n')
    net.addLink(h1,s1)
    net.addLink(h2,s1)
    net.addLink(s3,h3)
    net.addLink(s3,h4)
    net.addLink(s1,s2)
    net.addLink(s2,s3)
    net.addLink(s1,s4)
    net.addLink(s4,s5)
    net.addLink(s5,s3)

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

    info( '*** Starting switches\n')
    net.get('s1').start([c0])
    net.get('s2').start([c0])
    net.get('s3').start([c0])
    net.get('s4').start([c0])
    net.get('s5').start([c0])

    info( '*** Post configure switches and hosts\n')

    CLI(net)
    net.stop()

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

我是 mininet 和 ryu 控制器 (SDN) 的新手。我的问题是 - 我无法在主机之间 ping。 pingall 或 h1 ping h1 或 h1 ping h3 没有响应。请帮忙。防火墙被禁用。它与- sudo mn --topo simple,3 --controller remote --switch ovsk