基础要求

tcpdump 验证Hub模块

h1 ping h2的tcpdump抓包结果截图

h1 ping h3的tcpdump抓包结果截图

tcpdump 验证Switch模块

h1 ping h2的tcpdump抓包结果截图

h1 ping h3的tcpdump抓包结果截图

L2_learning模块代码流程图

进阶要求

代码

from pox.core import core
import pox.openflow.libopenflow_01 as of
from pox.openflow.of_json import *


class SendFlowInSingle3(object):
    def __init__ (self):
        core.openflow.addListeners(self)
    def _handle_ConnectionUp(self, event):
        msg = of.ofp_flow_mod()  
        msg.priority = 1
        msg.match.in_port = 1
        msg.actions.append(of.ofp_action_output(port=2)) 
        msg.actions.append(of.ofp_action_output(port=3))
        event.connection.send(msg)
        msg = of.ofp_flow_mod()  
        msg.priority = 1
        msg.match.in_port = 2  
        msg.actions.append(of.ofp_action_output(port=1)) 
        msg.actions.append(of.ofp_action_output(port=3))  
        event.connection.send(msg)
        msg = of.ofp_flow_mod()  
        msg.priority = 1
        msg.match.in_port = 3  
        msg.actions.append(of.ofp_action_output(port=1)) 
        msg.actions.append(of.ofp_action_output(port=2))  
        event.connection.send(msg)
def launch():
    core.registerNew(SendFlowInSingle3)

运行结果

个人总结

个人感想

实验遇到的问题

（1）一直能ping通