I configure box topology with s1,s2,s3,s4,h1,h2,h3 and h4. h1 and h2 connect to s1. h3 and h4 connect to s4. I did add flow entry using VLAN12,20. h1 and h3 are vlan 12. h2 and h4 are vlan 20. (actions is add nodes , input port, vlan ID) but it is not working. if setting flow entry is good, I think ping have not working between h1 and h2 because they are not same vlan. but ping is well. How do I do if I want to use vlan?? What do i add flow entry??