RYU连接ovs--主动、被动

root@kunpeng82 app]# ryu-manager --ofp-tcp-listen-port   6666  --verbose  simple_switch_13.py
loading app simple_switch_13.py
loading app ryu.controller.ofp_handler
instantiating app simple_switch_13.py of SimpleSwitch13
instantiating app ryu.controller.ofp_handler of OFPHandler
BRICK SimpleSwitch13
  CONSUMES EventOFPPacketIn
  CONSUMES EventOFPSwitchFeatures
BRICK ofp_event
  PROVIDES EventOFPPacketIn TO {‘SimpleSwitch13‘: {‘main‘}}
  PROVIDES EventOFPSwitchFeatures TO {‘SimpleSwitch13‘: {‘config‘}}
  CONSUMES EventOFPEchoReply
  CONSUMES EventOFPEchoRequest
  CONSUMES EventOFPErrorMsg
  CONSUMES EventOFPHello
  CONSUMES EventOFPPortDescStatsReply
  CONSUMES EventOFPPortStatus
  CONSUMES EventOFPSwitchFeatures

端口6634是ovs-vswitchd监听端口是被动连接管理的端口
所谓的被动连接端口是指，控制器可以主动连接此端口，控制此ovs，下面就是设置被动端口的 方式

ovs-vsctl set-controller s1 ptcp:8888

特别说明：相对应被动端口，主动端口（ovs主动连接并和控制器通信的端口）设置方式如下:

ovs-vsctl set-controller s1 tcp:127.0.0.1:8887

主动连接本地控制器127.0.0.1:8887端口

主动连接也可以设置多个，设置方法如下
通过通信数据包得知，该ovs会和本地控制器6636和6637通信，如果有packet in事件时候会将该事件分别发一份给这两个控制器，至于两个控制器间的关系协作暂无研究。

ovs-vsctl set-controller s1 tcp:127.0.0.1:6636 tcp:127.0.0.1:6637

[root@kunpeng82 devuser]# netstat -lpn -t
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      2986/sshd           
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      3304/master         
tcp        0      0 0.0.0.0:6653            0.0.0.0:*               LISTEN      41169/controller    
tcp        0      0 0.0.0.0:6666            0.0.0.0:*               LISTEN      41526/python3       
tcp6       0      0 :::22                   :::*                    LISTEN      2986/sshd           
tcp6       0      0 ::1:25                  :::*                    LISTEN      3304/master         
[root@kunpeng82 devuser]# ps -lf  -p  41169
F S UID        PID  PPID  C PRI  NI ADDR SZ WCHAN  STIME TTY          TIME CMD
4 S root     41169 41100  0  80   0 -    49 do_sys 11:32 pts/2    00:00:00 controller -v ptcp:6653
[root@kunpeng82 devuser]# ps -lf  -p  41526
F S UID        PID  PPID  C PRI  NI ADDR SZ WCHAN  STIME TTY          TIME CMD
0 S root     41526 40924  0  80   0 -  2612 ep_pol 11:41 pts/1    00:00:01 /bin/python3 /usr/local/bin/ryu-manager
[root@kunpeng82 devuser]#