0

我是使用 mininet 和 RYU 控制器的新手。我在 RYU 中实现了 Dijkstra 算法，如 --> http://csie.nqu.edu.tw/smallko/sdn/dijkstra_ryu.htm

在 mininet 上，我创建了我的自定义拓扑，如下所示。但是在 mininet 拓扑上运行控制器时，会出现以下错误——

不支持的版本 0x1。如果可能，将开关设置为使用数据路径上的版本 [4] 之一（'127.0.0.1'，50884）

不知道如何在拓扑中将交换机的版本改为1.3。我也不知道如何从链接中更改 RYU 代码中的切换协议版本。

请帮帮我！！！

# THE MININET TOPOLOGY
#!/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\n' )
    c0=net.addController(name='c0',
                      controller=RemoteController,
                      protocol='tcp',
                      port=6633)

    info( '*** Add switches\n')
    s5 = net.addSwitch('s5', cls=OVSKernelSwitch)
    s1 = net.addSwitch('s1', cls=OVSKernelSwitch)
    s4 = net.addSwitch('s4', cls=OVSKernelSwitch)
    s9 = net.addSwitch('s9', cls=OVSKernelSwitch)
    s6 = net.addSwitch('s6', cls=OVSKernelSwitch)
    s8 = net.addSwitch('s8', cls=OVSKernelSwitch)
    s2 = net.addSwitch('s2', cls=OVSKernelSwitch)
    s10 = net.addSwitch('s10', cls=OVSKernelSwitch)
    s11 = net.addSwitch('s11', cls=OVSKernelSwitch)
    s3 = net.addSwitch('s3', cls=OVSKernelSwitch)
    s7 = net.addSwitch('s7', cls=OVSKernelSwitch)

    info( '*** Add hosts\n')
    h10 = net.addHost('h10', cls=Host, ip='10.0.0.10', defaultRoute=None)
    h2 = net.addHost('h2', cls=Host, ip='10.0.0.2', defaultRoute=None)
    h5 = net.addHost('h5', cls=Host, ip='10.0.0.5', defaultRoute=None)
    h3 = net.addHost('h3', cls=Host, ip='10.0.0.3', defaultRoute=None)
    h11 = net.addHost('h11', cls=Host, ip='10.0.0.11', defaultRoute=None)
    h1 = net.addHost('h1', cls=Host, ip='10.0.0.1', defaultRoute=None)
    h6 = net.addHost('h6', cls=Host, ip='10.0.0.6', defaultRoute=None)
    h9 = net.addHost('h9', cls=Host, ip='10.0.0.9', defaultRoute=None)
    h4 = net.addHost('h4', cls=Host, ip='10.0.0.4', defaultRoute=None)
    h7 = net.addHost('h7', cls=Host, ip='10.0.0.7', defaultRoute=None)
    h8 = net.addHost('h8', cls=Host, ip='10.0.0.8', defaultRoute=None)

    info( '*** Add links\n')
    net.addLink(h1, s1)
    net.addLink(h2, s2)
    net.addLink(s3, h3)
    net.addLink(s4, h4)
    net.addLink(s5, h5)
    net.addLink(h6, s6)
    net.addLink(s7, h7)
    net.addLink(s8, h8)
    net.addLink(s9, h9)
    net.addLink(s10, h10)
    net.addLink(h11, s11)
    net.addLink(s1, s6)
    net.addLink(s6, s3)
    net.addLink(s3, s1)
    net.addLink(s3, s7)
    net.addLink(s6, s4)
    net.addLink(s4, s5)
    net.addLink(s5, s9)
    net.addLink(s9, s8)
    net.addLink(s8, s2)
    net.addLink(s7, s8)
    net.addLink(s9, s10)
    net.addLink(s10, s11)
    net.addLink(s2, s11)
    net.addLink(s7, s5)

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

    info( '*** Starting switches\n')
    net.get('s5').start([c0])
    net.get('s1').start([c0])
    net.get('s4').start([c0])
    net.get('s9').start([c0])
    net.get('s6').start([c0])
    net.get('s8').start([c0])
    net.get('s2').start([c0])
    net.get('s10').start([c0])
    net.get('s11').start([c0])
    net.get('s3').start([c0])
    net.get('s7').start([c0])

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

    CLI(net)
    net.stop()

if __name__ == '__main__':
    setLogLevel( 'info' )
    myNetwork()
4

2 回答 2

0

要将 Openflow 1.3 与 ryu 一起使用，请在您的 ryu 控制器中导入该版本：

from ryu.base import app_manager
from ryu.controller import ofp_event
from ryu.controller.handler import CONFIG_DISPATCHER, MAIN_DISPATCHER
from ryu.controller.handler import set_ev_cls
from ryu.ofproto import ofproto_v1_3

class Controller(app_manager.RyuApp):
  OFP_VERSIONS = [ofproto_v1_3.OFP_VERSION]  # Use OpenFlow 1.3.x

  def __init__(self, *args, **kwargs):
    super(Controller, self).__init__(*args, **kwargs)
于 2019-05-16T21:14:58.973 回答
0

添加ovsk开关以支持openflow协议：

$ sudo mn --typo tree,3 --mac --controller=remote,ip=127.0.0.1,port=5366 --switch=ovsk,protocols=OpenFlow13

OFP_VERSIONSsrc 文档定义了控制器应用程序支持的 OpenFlow 版本列表。这通常是指定的，在应用程序中要与 Ryu 支持的 OpenFlow 版本兼容 OFP_VERSIONS = [ofproto_v1_3.OFP_VERSION]

于 2020-08-19T13:59:08.763 回答