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)

(1)配置java环境

在终端输入如下命令:

sudo gedit ~/.bashrc

在文件后面添加:

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)解压安装OpenDayLight控制器

版本为:0.4.4-Beryllium-SR4

2. 启动并安装插件

(1)进入ODL的文件夹,在终端输入如下命令:

./karaf 

(2)安装feature,输入如下面命令:

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)打开控制器UI

打开浏览器访问http://127.0.0.1:8181/index.html,登入进入ODL图形化界面

3. 用Python脚本搭建如下拓扑,连接OpenDayLight控制器


(1)Python代码:

from mininet.topo import Topo

class Mytopo(Topo):

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

        sw=self.addSwitch('s1')
        count=1
        for i in range(3):
                host = self.addHost('h{}'.format(count))
                self.addLink(host,sw,1,count)
                count = count + 1
topos = {'mytopo': (lambda:Mytopo())}

(2)打开ODL

(3)创建拓扑并进行pingall


(4)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

(1)打开Yang UI>Opendaylight-inventory>config>nodes>table>flow,分别设置nod、table、flow的值

node/openflow:1
table/0
flow/不超过1024

(2)在mininet中用links查询链路连接情况

(3)设置相关值




(4)在mininet中进行h2 ping h3,点击send,由于设置了前20s不同,icmp_seq会延迟20

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。

下载并解压安装Postman,Postman下载地址
要求提交Postman下发流表及查看流表的截图

(1)安装postman,输入如下命令:

sudo tar -xzf Postman-linux-x64-7.11.0.tar.gz
./Postman/Postman

(2) 通过preview查看刚刚下发的流表项的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": "2",
                "ethernet-match": {
                    "ethernet-type": {
                        "type": "0x800"
                    }
                },
                "ipv4-destination": "10.0.0.3/32"
            },
            "instructions": {
                "instruction": [
                    {
                        "order": "0",
                        "apply-actions": {
                            "action": [
                                {
                                    "order": "0",
                                    "drop-action": {}
                                }
                            ]
                        }
                    }
                ]
            },
            "priority": "65535",
            "hard-timeout": "20",
            "cookie": "2",
            "table_id": "0"
        }
    ]
}

(3)把preview里的url复制到地址栏,消息方式选择PUT,type设置为Basic Auth,并填写账户和密码

(4)把Body中将消息格式设置成json,上传方式设置为raw,并将preview的消息粘贴在文本框中,点击send后下发成功

(5)发送成功后改为GET并send查看刚刚下发的流表项

posted @ 2019-11-21 17:09  一天能饿好多次  阅读(131)  评论(0编辑  收藏  举报