首页 > 其他分享 >实验7:基于REST API的SDN北向应用实践

实验7:基于REST API的SDN北向应用实践

时间:2022-10-26 16:11:56浏览次数:35  
标签:__ url REST headers json API SDN type requests

1.编写Python程序,调用OpenDaylight的北向接口实现以下功能

(1) 利用Mininet平台搭建下图所示网络拓扑,并连接OpenDaylight;

(2) 下发指令删除s1上的流表数据。

#!/usr/bin/python
import requests
from requests.auth import HTTPBasicAuth
if __name__ == "__main__":
    url = 'http://127.0.0.1:8181/restconf/config/opendaylight-inventory:nodes/node/openflow:1/'
    headers = {'Content-Type': 'application/json'}
    res = requests.delete(url, headers=headers, auth=HTTPBasicAuth('admin', 'admin'))
    print (res.content)

(3) 下发硬超时流表,实现拓扑内主机h1和h3网络中断20s。

#!/usr/bin/python
import requests
from requests.auth import HTTPBasicAuth
if __name__ == "__main__":
    url = 'http://127.0.0.1:8181/restconf/config/opendaylight-inventory:nodes/node/openflow:1/flow-node-inventory:table/0/flow/1'
    with open("./timeout.json") as file:
        str = file.read()
    headers = {'Content-Type': 'application/json'}
    res = requests.put(url, str, headers=headers, auth=HTTPBasicAuth('admin', 'admin'))
    print (res.content)

(4) 获取s1上活动的流表数。

# getflow.py
import requests
from requests.auth import HTTPBasicAuth
if __name__ == "__main__":
    url = 'http://127.0.0.1:8181/restconf/operational/opendaylight-inventory:nodes/node/openflow:1/flow-node-inventory:table/0/opendaylight-flow-table-statistics:flow-table-statistics'
    headers = {'Content-Type': 'application/json'}
    res = requests.get(url,headers=headers, auth=HTTPBasicAuth('admin', 'admin'))
    print (res.content)

2.编写Python程序,调用Ryu的北向接口实现以下功能

(1) 实现上述OpenDaylight实验拓扑上相同的硬超时流表下发。

# ryu_timeout.py
import requests
if __name__ == "__main__":
    url = 'http://127.0.0.1:8080/stats/flowentry/add'
    with open("./ryu_timeout.json") as file:
        str = file.read()
    headers = {'Content-Type': 'application/json'}
    res = requests.post(url, str, headers=headers)
    print (res.content)




(2) 参考Ryu REST API的文档,基于VLAN实验的网络拓扑,编程实现相同的VLAN配置。

创建拓扑

# ryu_topo.py
from mininet.topo import Topo

class MyTopo(Topo):
    def __init__(self):
        # initilaize topology
        Topo.__init__(self)

        self.addSwitch("s1")
        self.addSwitch("s2")

        self.addHost("h1")
        self.addHost("h2")
        self.addHost("h3")
        self.addHost("h4")

        self.addLink("s1", "h1")
        self.addLink("s1", "h2")
        self.addLink("s2", "h3")
        self.addLink("s2", "h4")
        self.addLink("s1", "s2")

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

创建并编写 ryu_vlan.py 文件

# ryu_vlan.py
import json

import requests

if __name__ == "__main__":
    url = 'http://127.0.0.1:8080/stats/flowentry/add'
    headers = {'Content-Type': 'application/json'}
    flow1 = {
        "dpid": 1,
        "priority": 1,
        "match":{
            "in_port": 1
        },
        "actions":[
            {
                "type": "PUSH_VLAN",    
                "ethertype": 33024      
            },
            {
                "type": "SET_FIELD",
                "field": "vlan_vid",    
                "value": 4096           
            },
            {
                "type": "OUTPUT",
                "port": 3
            }
        ]
    }
    flow2 = {
        "dpid": 1,
        "priority": 1,
        "match":{
            "in_port": 2
        },
        "actions":[
            {
                "type": "PUSH_VLAN",     
                "ethertype": 33024      
            },
            {
                "type": "SET_FIELD",
                "field": "vlan_vid",     
                "value": 4097           
            },
            {
                "type": "OUTPUT",
                "port": 3
            }
        ]
    }
    flow3 = {
        "dpid": 1,
        "priority": 1,
        "match":{
            "vlan_vid": 0
        },
        "actions":[
            {
                "type": "POP_VLAN",    
                "ethertype": 33024     
            },
            {
                "type": "OUTPUT",
                "port": 1
            }
        ]
    }
    flow4 = {
        "dpid": 1,
        "priority": 1,
        "match": {
            "vlan_vid": 1
        },
        "actions": [
            {
                "type": "POP_VLAN", 
                "ethertype": 33024  
            },
            {
                "type": "OUTPUT",
                "port": 2
            }
        ]
    }
    flow5 = {
        "dpid": 2,
        "priority": 1,
        "match": {
            "in_port": 1
        },
        "actions": [
            {
                "type": "PUSH_VLAN", 
                "ethertype": 33024 
            },
            {
                "type": "SET_FIELD",
                "field": "vlan_vid", 
                "value": 4096  
            },
            {
                "type": "OUTPUT",
                "port": 3
            }
        ]
    }
    flow6 = {
        "dpid": 2,
        "priority": 1,
        "match": {
            "in_port": 2
        },
        "actions": [
            {
                "type": "PUSH_VLAN",  
                "ethertype": 33024  
            },
            {
                "type": "SET_FIELD",
                "field": "vlan_vid",  
                "value": 4097 
            },
            {
                "type": "OUTPUT",
                "port": 3
            }
        ]
    }
    flow7 = {
        "dpid": 2,
        "priority": 1,
        "match": {
            "vlan_vid": 0
        },
        "actions": [
            {
                "type": "POP_VLAN", 
                "ethertype": 33024  
            },
            {
                "type": "OUTPUT",
                "port": 1
            }
        ]
    }
    flow8 = {
        "dpid": 2,
        "priority": 1,
        "match": {
            "vlan_vid": 1
        },
        "actions": [
            {
                "type": "POP_VLAN", 
                "ethertype": 33024  
            },
            {
                "type": "OUTPUT",
                "port": 2
            }
        ]
    }
    res1 = requests.post(url, json.dumps(flow1), headers=headers)
    res2 = requests.post(url, json.dumps(flow2), headers=headers)
    res3 = requests.post(url, json.dumps(flow3), headers=headers)
    res4 = requests.post(url, json.dumps(flow4), headers=headers)
    res5 = requests.post(url, json.dumps(flow5), headers=headers)
    res6 = requests.post(url, json.dumps(flow6), headers=headers)
    res7 = requests.post(url, json.dumps(flow7), headers=headers)
    res8 = requests.post(url, json.dumps(flow8), headers=headers)



个人总结

本次实验较难,综合了之前的知识,对技能要求较高。
主要要求编写Python程序,调用OpenDaylight的北向接口实现功能以及编写Python程序,调用Ryu的北向接口实现功能。
编写python代码,需要阅读Ryu REST API。这对我来说是一个不小的挑战。

标签:__,url,REST,headers,json,API,SDN,type,requests
From: https://www.cnblogs.com/epiphanyone/p/16828771.html

相关文章

  • 实验7:基于REST API的SDN北向应用实践
    基本要求编写Python程序,调用OpenDaylight的北向接口实现以下功能(1)利用Mininet平台搭建下图所示网络拓扑,并连接OpenDaylight;(2)下发指令删除s1上的流表数据。#delete.p......
  • 传统 API 管理与测试过程正面临严峻的挑战
    随着测试左移思想的引入,API(应用程序编程接口)经济的飞速增长,导致对API管理平台的需求相应增加。越来越多的企业注重并关注接口测试。单纯的做接口测试或者做好接口测试的......
  • 实验7:基于REST API的SDN北向应用实践
    一、实验目的能够编写程序调用OpenDaylightRESTAPI实现特定网络功能;能够编写程序调用RyuRESTAPI实现特定网络功能。二、实验环境下载虚拟机软件OracleVisualBo......
  • Vue3-CompositionAPI-响应式基础
    一、响应式基础前提:你会使用setup函数或<scriptsetup>语法1.reactive我们可以使用reactive()函数创建一个响应式对象或数组:import{reactive}from'vue'c......
  • SDN之Openflow+OpenDayLight课程开课通知
    内容简介:该课程为期2天,在这两天里我们将会深入体会SDN的特点与传统网络的区别,掌握SDN架构里各层的协议用途,Openflow作为sdn里的一款开源的南向协议,最大的意义体现在......
  • 实验7:基于REST API的SDN北向应用实践
    1.编写Python程序,调用OpenDaylight的北向接口实现以下功能(1)利用Mininet平台搭建下图所示网络拓扑,并连接OpenDaylight搭建拓扑sudomn--topo=single,3--controller=re......
  • 实验7:基于REST API的SDN北向应用实践
    实验7:基于RESTAPI的SDN北向应用实践一、实验目的1.能够编写程序调用OpenDaylightRESTAPI实现特定网络功能;2.能够编写程序调用RyuRESTAPI实现特定网络功能。二、实......
  • 实验7:基于REST API的SDN北向应用实践
    (一)基本要求1.编写Python程序,调用OpenDaylight的北向接口实现以下功能(1)利用Mininet平台搭建下图所示网络拓扑,并连接OpenDaylight;(2)下发指令删除s1上的流表数据。1-2......
  • 实验二 OpenSSL API使用
    ......
  • 实验7:基于REST API的SDN北向应用实践
    实验7:基于RESTAPI的SDN北向应用实践一、实验目的能够编写程序调用OpenDaylightRESTAPI实现特定网络功能;能够编写程序调用RyuRESTAPI实现特定网络功能。二、实验......