Mininet

第二次sdn实验： 1. 利用mininet创建如下拓扑，要求拓扑支持OpenFlow 1.3协议，主机名、交换机名以及端口对应正确，请给出拓扑Mininet执行结果，展示端口连接情况。 本次使用python脚本fattree生成拓扑，这样方便设置路由器的转发端口号。 python代码： """Custom topology example Adding the 'topos' dict with a key/value pair to generate our newly defined topology enables one to pass in '--topo=mytopo' from the command line. """ 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

1. 利用mininet创建如下拓扑，要求拓扑支持OpenFlow 1.3协议，主机名、交换机名以及端口对应正确，请给出拓扑Mininet执行结果，展示端口连接情况 编写如下python脚本后运行，得到与预期端口号相符的网络拓扑： #!/usr/bin/python #Creating Inernet Topo 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): #Initialize Topology Topo.__init__(self) L1 = 2 L3 = 3 c = [] #add core ovs for i in range(L1): sw = self.addSwitch('s{}'.format(i+1)) c.append(sw) #add Hosts count = 1 for sw1 in c: for i in range(0, 3):

1. 利用mininet创建如下拓扑，要求拓扑支持OpenFlow 1.3协议，主机名、交换机名以及端口对应正确，请给出拓扑Mininet执行结果，展示端口连接情况 Python脚本 #!/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." Topo.__init__( self ) s = [] for i in range( 2 ): 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

1.利用mininet创建如下拓扑，要求拓扑支持OpenFlow 1.3协议，主机名、交换机名以及端口对应正确，请给出拓扑Mininet执行结果，展示端口连接情况 python代码 from mininet.topo import Topo class MyTopo( Topo ): "Simple topology example." def __init__( self ): Topo.__init__(self) sw1 = self.addSwitch('s1') sw2 = self.addSwitch('s2') h1 = self.addHost('h1') h2 = self.addHost('h2') h3 = self.addHost('h3') h4 = self.addHost('h4') h5 = self.addHost('h5') h6 = self.addHost('h6') self.addLink(h1,sw1,1,1) self.addLink(h2,sw1,1,2) self.addLink(h3,sw1,1,3) self.addLink(sw1,sw2,4,4) self.addLink(h4,sw2,1,1) self.addLink(h5,sw2,1,2) self.addLink(h6,sw2,1,3) topos = {

1.利用mininet创建如下拓扑，要求拓扑支持OpenFlow 1.3协议，主机名、交换机名以及端口对应正确，请给出拓扑Mininet执行结果，展示端口连接情况 创建fattree2.py文档,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)) switchs.append(sw) count=1 for sw in switchs[0:2]: for i in range(3): host = self.addHost('h{}'.format(count)) self.addLink(sw,host) count += 1 self.addLink(switchs[0]

docker pull onosproject/onos:1.14.0 docker pull iwaseyusuke/mininet:latest docker create --name onos1140 --hostname onos -p 8101:8101 -p 8181:8181 -p 6633:6633 -it onosproject/onos:1.14.0 docker run -it -d -it --privileged -e DISPLAY -v /tmp/.X11-unix:/tmp/.X11-unix -v /lib/modules:/lib/modules iwaseyusuke/mininet --name mininet @host ssh -p 8101 karaf@$ip_of_onos1140 pwd:karaf app activate org.onosproject.openflow （启用openflow） app activate org.onosproject.fwd （启用forward转发功能） docker exec -it mininet bash mn --topo tree,2 --controller remote,ip=$ip_of_onos1140 mn --topo tree,depth=2,fanout=3 -

1.利用mininet创建如下拓扑，要求拓扑支持OpenFlow 1.3协议，主机名、交换机名以及端口对应正确，请给出拓扑Mininet执行结果，展示端口连接情况 (1)搭建如下拓扑 (2)python脚本代码 from mininet.topo import Topo Hcount=3 Scount=2 class MyTopo(Topo): def __init__(self): Topo.__init__(self) global Hcount,Scount switchs = [] for i in range(Scount): swit = self.addSwitch("s{}".format(i + 1)) switchs.append(swit) c = 1 for sw in switchs: for i in range(Hcount): hx = self.addHost("h{}".format(c)) self.addLink(sw, hx) c+=1 self.addLink(switchs[0], switchs[1]) topos = {"mytopo": (lambda : MyTopo()) } (3)执行python脚本创建mininet网络拓扑 (4).测试端口连接情况 2.直接在Open vSwitch下发流表，用vlan得到下列虚拟网段

1.利用mininet创建如下拓扑，要求拓扑支持OpenFlow 1.3协议，主机名、交换机名以及端口对应正确，请给出拓扑Mininet执行结果，展示端口连接情况 （1）创建SDNtest2.py文档 from mininet.topo import Topo class MyTopo( Topo ): def __init__( self ): # Initialize topology Topo.__init__( self ) switch1 = self.addSwitch('switch1') switch2 = self.addSwitch('switch2') h1 = self.addHost('h1') h2 = self.addHost('h2') h3 = self.addHost('h3') h4 = self.addHost('h4') h5 = self.addHost('h5') h6 = self.addHost('h6') self.addLink(h1,switch1,1,1) self.addLink(h2,switch1,1,2) self.addLink(h3,switch1,1,3) self.addLink(switch1,switch2,4,4) self.addLink(h4,switch2,1,1) self.addLink(h5

1. 利用mininet创建如下拓扑，要求拓扑支持OpenFlow 1.3协议，主机名、交换机名以及端口对应正确，请给出拓扑Mininet执行结果，展示端口连接情况 使用python脚本设计拓扑，代码如下 from mininet.topo import Topo class MyTopo(Topo): def __init__(self): # initilaize topology Topo.__init__(self) # add hosts and switches host1 = self.addHost('h1') host2 = self.addHost('h2') host3 = self.addHost('h3') host4 = self.addHost('h4') host5 = self.addHost('h5') host6 = self.addHost('h6') switch1 = self.addSwitch('s1') switch2 = self.addSwitch('s2') # add links self.addLink(host1, switch1, 1, 1) self.addLink(host2, switch1, 1, 2) self.addLink(host3, switch1, 1, 3) self.addLink(host4,

1. 利用mininet创建拓扑，要求拓扑支持OpenFlow 1.3协议，主机名、交换机名以及端口对应正确，请给出拓扑Mininet执行结果，展示端口连接情况 Python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(