2019 SDN上机第1次作业

匿名 (未验证) 提交于 2019-12-03 00:16:01

(1)首先从GitHub上获取mininet源码:

git clone https://github.com/mininet/mininet.git

(2)输入如下命令进行安装:

cd mininet/util ./install.sh

每次克隆到某个文件的时候都会遇到这个问题:

解决方法:用查找install.sh文件中的有git clone的部分,然后再替换成http

git clone git://github.com/mininet/openflow

替换成

git clone http://github.com/mininet/openflow

就解决了

等待一段时间后就安装成功啦
真希望我能够Enjoy Mininet哈哈哈哈

(3)安装完成后用mn --version命令查看所安装mininet的版本信息:

mn --version

(1)


命令如下:

sudo mn --topo linear,3

(2)


命令如下:

sudo mn --topo tree,fanout=3,depth=2

每次要新建拓扑时,需执行以下命令,防止上次操作对本次实验的影响。

sudo mn -c


(1)在~/mininet/examples目录下打开终端,执行以下命令:

./miniedit.py 

即可打开可视化控件,搭建拓扑:

(2)设置h1(10.0.0.10)、h2(10.0.0.11)、h3(10.0.0.12),并在miniedit工具中开启CLI:

(3)点击Run按钮:

(4)通过net查看拓扑:

(5)使用xterm语句验证主机ip,查看拓扑端口连接情况:


(1)python脚本代码:

#!/usr/bin/python #创建网络拓扑 """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 custom topo."          # Initialize topology         Topo.__init__( self )         L1 = 2         L2 = L1 * 2          L3 = L2         c = []         a = []         e = []                    # add core ovs           for i in range( L1 ):                 sw = self.addSwitch( 's{}'.format( i + 1 ) )                 c.append( sw )              # add aggregation ovs         for i in range( L2 ):                 sw = self.addSwitch( 's{}'.format( L1 + i + 1 ) )                 a.append( sw )              # add links between core and aggregation ovs         for i in range( L1 ):                 sw1 = c[i]                 for sw2 in a[i/2::L1/2]:                 # self.addLink(sw2, sw1, bw=10, delay='5ms', loss=10, max_queue_size=1000, use_htb=True)                         self.addLink( sw2, sw1 )           #add hosts and its links with aggregation ovs         count = 1         for sw1 in a:                 for i in range(2):                     host = self.addHost( 'h{}'.format( count ) )                     self.addLink( sw1, host )                     count += 1 topos = { 'mytopo': ( lambda: MyTopo() ) } }

(2)用以下命令生成拓扑:

sudo mn --custom fattree.py --topo mytopo --switch ovsk,protocols=OpenFlow10

(3)使用net命令验证拓扑结构:

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