Can anyone help me understand in what scenarios which of the openflow messages have to be used? I understand ofp_flow_mod() is to modify flow table entries on the switch ( I have been using this message all along) and ofp_packet_out()(which I don't know why to use) is when the controller wants the switch to send a packet, which can also be achieved by modifying the flow table entries using ofp_flow_mod() message. Are there any other factors which decide which message to be sent when?
Also,a note to admin.is there a way I can scna through previous queries posted by other members? Cheers! Durga
