2019 SDN上机第4次作业

1. 解压安装OpenDayLight控制器（本次实验统一使用Beryllium版本）

• 配置java环境
  
  

• 安装OpenDayLight控制器
  
  

2. 启动并安装插件

cd distribution-karaf-0.4.4-Beryllium-SR4/bin/

./karaf

feature:install odl-restconf

feature:install odl-l2switch-switch-ui

feature:install odl-openflowplugin-all

feature:install odl-mdsal-apidocs

feature:install odl-dlux-core

feature:install odl-dlux-node

feature:install odl-dlux-yangui

3. 用Python脚本搭建如下拓扑，连接OpenDayLight控制器

• python代码

from mininet.topo import Topo

class Topo2( Topo ):

    def __init__( self ):

        # Initialize topology

        Topo.__init__( self )

        # add switches and hosts

        sw1 = self.addSwitch('s1')

        sw2 = self.addSwitch('s2')

        h1 = self.addHost('h1')

        h2 = self.addHost('h2')

        h3 = self.addHost('h3')

        # add links

        self.addLink(h1,sw1,1,1)

        self.addLink(h2,sw1,1,2)

        self.addLink(h3,sw1,1,3)

topos = { 'mytopo': ( lambda: Topo2() ) }

• 连通性
  
  

• 可执行
  
  

4. 在控制器提供的WEB UI中下发流表使h2 20s内ping不通h3，20s后恢复

• 下发流表设置过程
  
  
  
  

• 解释

• 查询链路连接情况
  
  

• h2 ping h3,发生延时
  
  

5. 借助Postman通过OpenDayLight的北向接口下发流表，再利用OpenDayLight北向接口查看已下发的流表。

• 安装运行postman，下发流表json格式

http://127.0.0.1:8181/restconf/config/opendaylight-inventory:nodes/node/openflow:1/flow-node-inventory:table/0/flow/1

{

    "flow": [

        {

            "id": "1",

            "match": {

                "in-port": "1",

                "ethernet-match": {

                    "ethernet-type": {

                        "type": "0x0800"

                    }

                },

                "ipv4-destination": "10.0.0.3/32"

            },

            "priority": "65535",

            "hard-timeout": "25",

            "cookie": "2",

            "table_id": "0"

        }

    ]

}

• 将preview的url复制到地址栏，输入odl的默认账号和密码admin
  
  

• 将preview的消息粘贴在文本框中，修改id和url里的flow为2，防止与之前的流表重合，点击send后下发成功，然后改为GET并send查看刚下发的流表