SDN第二次上机作业

1. 安装floodlight

参考链接：http://www.sdnlab.com/19189.html

2. 生成拓扑并连接控制器floodlight，利用控制器floodlight查看图形拓扑

#!/usr/bin/python

from mininet.topo import Topo

class topo1(Topo):

    def __init__(self):
        Topo.__init__(self)

        nums = 3

        centerSwitch = self.addSwitch("s1")
        otherSwitchs = []
        hosts = []
        for i in range(nums):
            sw = self.addSwitch("s{}".format(i + 2))
            otherSwitchs.append(sw)

        for i in range(nums):
            h = self.addHost("h{}".format(i + 1))
            hosts.append(h)

        for sw in otherSwitchs:
            self.addLink(centerSwitch, sw)

        for i in range(nums):
            sw = otherSwitchs[i]
            h = hosts[i]
            self.addLink(h, sw)


topos = {"topo1": (lambda: topo1())}

pingall:

3. 利用字符界面下发流表，使得‘h1’和‘h2’ ping 不通

4. 利用字符界面下发流表，通过测试‘h1’和‘h3’的联通性，来验证openflow的hardtime机制