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）

OpenDayLight是java实现的，因此需要先配置java环境
解压相关文件，运行下列命令，进行环境配置

sudo gedit ~/.bashrc

将下列路径加到所打开得文件内

export JAVA_HOME=/usr/local/java/jdk1.8.0_201
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

2. 启动并安装插件

将压缩文件解压
进入解压文件的bin文件下
运行下列命令

./karaf

安装插件

opendaylight-user@root>feature:install odl-restconf
opendaylight-user@root>feature:install odl-l2switch-switch-ui
opendaylight-user@root>feature:install odl-openflowplugin-all
opendaylight-user@root>feature:install odl-mdsal-apidocs
opendaylight-user@root>feature:install odl-dlux-core
opendaylight-user@root>feature:install odl-dlux-node
opendaylight-user@root>feature:install odl-dlux-yangui

在浏览器中输入开启ui界面

http://127.0.0.1:8181/index.html

用户名和密码均为admin

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 MyTopo( Topo ):
    "Simple topology example."
 
    def __init__( self ):
    	Topo.__init__(self)
	sw1 = self.addSwitch('s1')

	h1 = self.addHost('h1')
	h2 = self.addHost('h2')
	h3 = self.addHost('h3')

	self.addLink(h1,sw1,1,1)
	self.addLink(h2,sw1,1,2)
	self.addLink(h3,sw1,1,3)
	

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

执行下列命令，建立拓扑

sudo mn --custom 1.py --topo mytopo --controller=remote,ip=127.0.0.1,port=6633 --switch ovsk,protocols=OpenFlow13

使用pingall查看连接情况

控制器端的拓扑图

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

使用links查找端口

进入ODL修改下发流表









修改后运行h2 ping h3，发送流表

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。

解压文件
进入文件打开终端运行下列命令

./Postman

在ODL显示下发流表

http://127.0.0.1:8181/restconf/config/opendaylight-inventory:nodes/node/openflow:1/flow-node-inventory:table/0/flow/100

{
    "flow": [
        {
            "id": "100",
            "match": {
                "in-port": "2",
                "ethernet-match": {
                    "ethernet-type": {
                        "type": "0x0800"
                    }
                },
                "ipv4-destination": "10.0.0.3/32"
            },
            "instructions": {
                "instruction": [
                    {
                        "order": "0",
                        "apply-actions": {
                            "action": [
                                {
                                    "order": "0",
                                    "drop-action": {}
                                }
                            ]
                        }
                    }
                ]
            },
            "priority": "65535",
            "hard-timeout": "20",
            "table_id": "0"
        }
    ]
}

设置Postmam

使用put下发流表


使用get的到下发的流表