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()