Mininet

利用DFS算法，实现Ryu应用，并在Mininet上完成相关验证 Ryu与Mininet相关安装与配置详见： https://blog.csdn.net/haimianxiaojie/article/details/50705288 关于本文内所有完整代码详见： https://github.com/PPPerry/Ryu_projects 中的DFS部分 实现内容如下： 在Mininet上搭建一个20个节点网络（拓扑给定），每个网络节点下挂一个主机； 按照如图所示的拓扑，编写mininet的拓扑代码，各个交换机与主机的序号均相同。 完整的拓扑代码如下： #!/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 .

2019 SDN上机第6次作业 1.实验拓扑 (1)实验拓扑 (2)使用Python脚本完成拓扑搭建 from mininet.topo import Topo from mininet.net import Mininet from mininet.node import RemoteController,CPULimitedHost from mininet.link import TCLink from mininet.util import dumpNodeConnections class MyTopo(Topo): def __init__(self): # initilaize topology Topo.__init__(self) # add hosts and switches h1 = self.addHost('h1') h2 = self.addHost('h2') h3 = self.addHost('h3') h4 = self.addHost('h4') h5 = self.addHost('h5') h6 = self.addHost('h6') s1 = self.addSwitch('s1') s2 = self.addSwitch('s2') # add links self.addLink(h1, s1, 1, 1) self

1.实验拓扑 python编写网络拓扑 #!/usr/bin/python #创建网络拓扑 from mininet.topo import Topo from mininet.net import Mininet from mininet.node import RemoteController,CPULimitedHost from mininet.link import TCLink from mininet.util import dumpNodeConnections class MyTopo( Topo ): "Simple topology example." def __init__( self ): "Create custom topo." # Initialize topology Topo.__init__( self ) L1 = 2 s = [] # add core ovs for i in range( L1 ): sw = self.addSwitch( 's{}'.format( i + 1 ) ) s.append( sw ) # link s1 and s2 self.addLink(s[0],s[1]) #add hosts and its links with edge ovs count = 1 for sw1 in s: for i

1.实验拓扑 from mininet.topo import Topo from mininet.net import Mininet from mininet.node import RemoteController,CPULimitedHost from mininet.link import TCLink from mininet.util import dumpNodeConnections class MyTopo( Topo ): "Simple topology example." def __init__( self ): "Create custom topo." Topo.__init__( self ) L1 = 2 s = [] for i in range( L1 ): sw = self.addSwitch( 's{}'.format( i + 1 ) ) s.append( sw ) count = 1 for sw1 in s: for i in range(3): host = self.addHost( 'h{}'.format( count ) ) self.addLink( sw1, host ) count += 1 self.addLink(s[0],s[1]) topos = { 'mytopo': ( lambda: MyTopo(

1.实验拓扑 构建拓扑代码 from mininet.topo import Topo from mininet.net import Mininet from mininet.node import RemoteController,CPULimitedHost from mininet.link import TCLink from mininet.util import dumpNodeConnections class MyTopo( Topo ): "Simple topology example." def __init__( self ): "Create custom topo." Topo.__init__( self ) switchs = [] for i in range(2): sw = self.addSwitch("s{}".format(i + 1)) switchs.append(sw) self.addLink(switchs[0], switchs[1],4,4) count = 1 for sw in switchs: for i in range(3): h = self.addHost("h{}".format(count)) self.addLink(sw, h,i+1,1) count += 1 topos = { 'mytopo':

1.实验拓扑 实验拓扑图如下： 搭建代码如下： 创建py文件,并编写py代码，代码如下： from mininet.topo import Topo from mininet.net import Mininet from mininet.node import RemoteController,CPULimitedHost from mininet.link import TCLink from mininet.util import dumpNodeConnections class Mytopo(Topo): def __init__(self): Topo.__init__(self) s=[] for i in range(2): sw = self.addSwitch('s{}'.format(i+1)) s.append(sw) count=1 for sw in s[0:2]: for i in range(3): host = self.addHost('h{}'.format(count)) self.addLink(sw,host) count += 1 self.addLink(s[0],s[1]) topos = {'mytopo': (lambda:Mytopo())} 搭建结果如下 使用net查看拓扑 使用pingall发现都不连通

实验拓扑 通过图形化界面建立拓扑 先清除网络拓扑 sudo mn -c 生成Python语句 #!/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' ) info( '*** Add switches\n') s1 = net.addSwitch(