I'm working on creating SDN topology with OVS and docker containers as a host. my sample topology is: one ovs switch and 2 hosts(docker container) connected to it. 

HOST1 (container1) <----> OVS <----> HOST2 (container2)

first i start my opendaylight controller and connect my ovs switch to it by "**ovs-vsctl set-controller s1 tcp:ip:port**" after that i run 2 docker container with "**docker run -dit --net=none --name host1 ubuntu:16.04 /bin/bash**" and then i used "**ovs-docker**" command to connect my containers to the ovs. i can see my switch showing up on opendaylight dlux but i cant ping from one container to another. the problem is that the odl doesn't update the flow table automatically
here is "ovs-ofctl dump-flows s1" output

`cookie=0x2b00000000000001, duration=2494.398s, table=0, n_packets=0, n_bytes=0, idle_age=2494, priority=100,dl_type=0x88cc actions=CONTROLLER:65535
 cookie=0x2b00000000000001, duration=2494.387s, table=0, n_packets=18, n_bytes=756, idle_age=665, priority=0 actions=drop`

BUT when i **restart** the controller again, everything work fine and flows are added to my ovs switch and i can ping from one container to another.

`cookie=0x2b00000000000000, duration=3.087s, table=0, n_packets=0, n_bytes=0, idle_age=3, priority=2,in_port=1 actions=output:2,CONTROLLER:65535
 cookie=0x2b00000000000001, duration=3.087s, table=0, n_packets=0, n_bytes=0, idle_age=3, priority=2,in_port=2 actions=output:1,CONTROLLER:65535
 cookie=0x2b00000000000001, duration=2919.471s, table=0, n_packets=0, n_bytes=0, idle_age=2919, priority=100,dl_type=0x88cc actions=CONTROLLER:65535
 cookie=0x2b00000000000001, duration=2919.46s, table=0, n_packets=18, n_bytes=756, idle_age=1090, priority=0 actions=drop`

I know i can push flows by openflow pluing rest api to the flow table but assume you have too many ports(hosts) connected to the switch, you have to send flow entry one by one. so is there any way send event to Opendaylight controller to make it update the switch flow table automatically?