Hi, Yes, you can send the Packet-Out messages without any Packet-In messages, but it is required to confirm that Ryu and your switch are connected and "datapath" instance for the target switch is given.
If you need to send a Packet-Out message at the initialization step, how about sending the message in "switch_features_handler"? https://ryu.readthedocs.io/en/latest/ofproto_v1_3_ref.html#ryu.ofproto.ofproto_v1_3_parser.OFPSwitchFeatures This handler should be invoked at the initialization step for the target switch and "datapath" instance will be given. Regards, Iwase 2019年8月14日(水) 3:08 Martin Mirakyan <mirakyanmar...@gmail.com>: > Dear Ryu developer support team, > > Is it possible to send a packet to the switch from a Ryu app without > having any kind of PacketIn events? I want to initiate a packet-send from a > Ryu app so that the trigger of the event is the Ryu app itself not > something external. > > I've tried to do (in `def start`): > > datapath.send_packet_out(in_port=ofp.OFPP_LOCAL, > actions=[], > data=pkt.data) > > > But when I print `ovs-ofctl dump-flows gtp_br0` all the tables show > n_packets=0 (they aren't 0 if I initiate traffic not from a Ryu app). > > Is there something I might be missing? > > Thanks. > Best, > Martin > _______________________________________________ > Ryu-devel mailing list > Ryu-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/ryu-devel >
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