ryu 下发流表配置

资料链接：http://ryu.readthedocs.io/en/latest/app/ofctl_rest.html

 运行ryu进程：

ryu-manager --ofp-tcp-listen-port 6655 --wsapi-port 8080 --verbose /usr/lib/python2.7/site-packages/ryu/app/ofctl_rest.py

#! /bin/python

import re
import urllib
import urllib2
import json
import requests
import json
import time

# get switch dpid
post_url = 'http://127.0.0.1:8080/stats/switches';
req = urllib2.Request(post_url)
response = urllib2.urlopen(req)
dpid_data = response.read().strip('[]')

# show switch group
post_url = 'http://127.0.0.1:8080/stats/groupdesc/%s' % dpid_data;
req = urllib2.Request(post_url)
response = urllib2.urlopen(req)
print response.read()

# add switch group
post_url = 'http://127.0.0.1:8080/stats/groupentry/add';
group_data = {
    "dpid": dpid_data, 
    "type": "SELECT",
    "fields": "ip_src",
    "group_id": 1, 
    "buckets": [{
      "weight": 1,
      "actions": [{
           "type": "OUTPUT",
           "port": 1
       }]
     },
     {
      "weight": 1,
      "actions": [{
           "type": "OUTPUT",
           "port": 2
        }]
     },
     {
      "weight": 1,
      "actions": [{
           "type": "OUTPUT",
           "port": 3
        }]
     }]
}
data = json.dumps(group_data)
req = urllib2.Request(post_url)
response = urllib2.urlopen(req,data=data)
print response.read()

# show flows
post_url = 'http://127.0.0.1:8080/stats/flow/%s' % dpid_data;
req = urllib2.Request(post_url)
response = urllib2.urlopen(req)
print response.read()

# add flow
post_url = 'http://127.0.0.1:8080/stats/flowentry/add';
flows_data = {
    "dpid": dpid_data,
    "table_id": 0,
    "cookie": 10000,
    "priority": 1000,
    "match":{
        "dl_type": "0x8000",
        "in_port": 5,
        "dl_vlan": 100,
        #"dl_vlan": "0x1005"         # Describe sum of VLAN-ID(e.g. 5) | OFPVID_PRESENT(0x1000)
        "eth_src": "aa:bb:cc:11:22:33",
        "eth_dst": "aa:bb:cc:11:22:33",
        "ipv4_dst": "192.168.10.10/255.255.255.0", "eth_type": 2048,
        "ipv4_src": "192.168.0.1", "eth_type": 2048
    },
    "actions":[
        {
            "type": "PUSH_VLAN",   
            "ethertype": 33024      # Ethertype 0x8100(=33024): IEEE 802.1Q VLAN-tagged frame
        },
        {
            "type": "SET_FIELD",
            "field": "vlan_vid",  
            "value": 4102           # Describe sum of vlan_id(e.g. 6) | OFPVID_PRESENT(0x1000=4096)
        },
        {
            "type": "OUTPUT",
            "port": 20
        }
    ]
 }
data = json.dumps(flows_data)
req = urllib2.Request(post_url)
response = urllib2.urlopen(req,data=data)
print response.read()