一：推文
软件定义网络基础---REST API概述
软件定义网络基础---REST API的设计规范
二：掌握Ryu基本RESTAPI使用方法
（一）Ryu的RESTAPI
（二） REST应用样例：app/ofctl_rest.py
1.所提供的样例API接口
# REST API # # Retrieve the switch stats # # get the list of all switches # GET /stats/switches # # get the desc stats of the switch # GET /stats/desc/<dpid> # # get flows desc stats of the switch # GET /stats/flowdesc/<dpid> # # get flows desc stats of the switch filtered by the fields # POST /stats/flowdesc/<dpid> # # get flows stats of the switch # GET /stats/flow/<dpid> # # get flows stats of the switch filtered by the fields # POST /stats/flow/<dpid> # # get aggregate flows stats of the switch # GET /stats/aggregateflow/<dpid> # # get aggregate flows stats of the switch filtered by the fields # POST /stats/aggregateflow/<dpid> # # get table stats of the switch # GET /stats/table/<dpid> # # get table features stats of the switch # GET /stats/tablefeatures/<dpid> # # get ports stats of the switch # GET /stats/port/<dpid>[/<port>] # Note: Specification of port number is optional # # get queues stats of the switch # GET /stats/queue/<dpid>[/<port>[/<queue_id>]] # Note: Specification of port number and queue id are optional # If you want to omitting the port number and setting the queue id, # please specify the keyword "ALL" to the port number # e.g. GET /stats/queue/1/ALL/1 # # get queues config stats of the switch # GET /stats/queueconfig/<dpid>[/<port>] # Note: Specification of port number is optional # # get queues desc stats of the switch # GET /stats/queuedesc/<dpid>[/<port>[/<queue_id>]] # Note: Specification of port number and queue id are optional # If you want to omitting the port number and setting the queue id, # please specify the keyword "ALL" to the port number # e.g. GET /stats/queuedesc/1/ALL/1 # # get meter features stats of the switch # GET /stats/meterfeatures/<dpid> # # get meter config stats of the switch # GET /stats/meterconfig/<dpid>[/<meter_id>] # Note: Specification of meter id is optional # # get meter desc stats of the switch # GET /stats/meterdesc/<dpid>[/<meter_id>] # Note: Specification of meter id is optional # # get meters stats of the switch # GET /stats/meter/<dpid>[/<meter_id>] # Note: Specification of meter id is optional # # get group features stats of the switch # GET /stats/groupfeatures/<dpid> # # get groups desc stats of the switch # GET /stats/groupdesc/<dpid>[/<group_id>] # Note: Specification of group id is optional (OpenFlow 1.5 or later) # # get groups stats of the switch # GET /stats/group/<dpid>[/<group_id>] # Note: Specification of group id is optional # # get ports description of the switch # GET /stats/portdesc/<dpid>[/<port_no>] # Note: Specification of port number is optional (OpenFlow 1.5 or later) # Update the switch stats # # add a flow entry # POST /stats/flowentry/add # # modify all matching flow entries # POST /stats/flowentry/modify # # modify flow entry strictly matching wildcards and priority # POST /stats/flowentry/modify_strict # # delete all matching flow entries # POST /stats/flowentry/delete # # delete flow entry strictly matching wildcards and priority # POST /stats/flowentry/delete_strict # # delete all flow entries of the switch # DELETE /stats/flowentry/clear/<dpid> # # add a meter entry # POST /stats/meterentry/add # # modify a meter entry # POST /stats/meterentry/modify # # delete a meter entry # POST /stats/meterentry/delete # # add a group entry # POST /stats/groupentry/add # # modify a group entry # POST /stats/groupentry/modify # # delete a group entry # POST /stats/groupentry/delete # # modify behavior of the physical port # POST /stats/portdesc/modify # # modify role of controller # POST /stats/role # # # send a experimeter message # POST /stats/experimenter/<dpid>
（三）Ryu官方文档：https://ryu.readthedocs.io/en/latest/app/ofctl_rest.html
三：实验开始
（一）开启Ryu控制器
ryu-manager ofctl_rest.py simple_switch_13.py --observe-links --verbose #除了使用RESTAPI之外，我们还要保证ryu控制器正常处理交换机逻辑
（二）开启Mininet
sudo mn --controller=remote --mac --topo=tree,2,2
（三）使用Curl发送URL请求
1.获取到所有交换机Get the list of all switches which connected to the controller.
$ curl -X GET http://localhost:8080/stats/switches
2.获取交换机的描述信息Get the desc stats of the switch which specified with Datapath ID in URI.
$ curl -X GET http://localhost:8080/stats/desc/1
3.其他类似
（四）Postman实验（更美观）
1.安装postman
2.获取交换机信息
