Hi Lorenzo, Excuse me for jumping in.
I faced to the similar problem on my project (maybe this is not cause of your problem though), on my case, the cause was Linux bridge. The Linux bridge doesn’t transparently forward LLDP packets... At that time, I couldn’t find the proper solution of this problem, I replaced the Linux bridge by the Open vSwitch. In your case, I suppose the connections between your Docker containers are linked with the Linux bridges, how about trying the packet captures around the bridges? Thanks, Iwase 2018/09/27 15:09、Lorenzo Mignone <lorenzomign...@gmail.com>のメール: > I just tried... That does not work. > I think ryu.app.rest_topology should do the same job as ryu.app.ws_topology > but they both don't send LLDP packets. > I am thinking Open vSwitch might be the cause. > > Lorenzo > >> Il giorno gio 27 set 2018 alle ore 03:31 IWAMOTO Toshihiro >> <iwam...@valinux.co.jp> ha scritto: >> On Wed, 26 Sep 2018 18:56:31 +0900, >> Lorenzo Mignone wrote: >> > >> > [1 <multipart/alternative (7bit)>] >> > [1.1 <text/plain; us-ascii (quoted-printable)>] >> > Hi, >> > Yes, you are right. >> > In my case, messages between switches and controller are: >> > >> > Switch: OFPT_HELLLO ---> Controller >> > Controller: OFPT_HELLO ---> Switch >> > Controller: OFPT_FEATURES_REQUEST ---> Switch >> > Switch: OFPT_FEATURES_REPLY ---> Controller >> > This message includes a field capabilities where all is set to true except >> > from OFPC_IP_REASM >> > Controller: OFPT_MULTIPART_REQUEST, OFPMP_PORT_DESC ---> Switch >> > Switch: OFPT_MULTIPART_REPLY, OFPMP_PORT_DESC ---> Controller >> > This message includes port information (MAC address, name, state, >> > advertised, ...) >> > Controller: OFPT_FLOW_MOD ---> Switch >> > This message sets a flow entry which matches the controller's MAC and >> > ethertype LLDP >> > >> > Then some OFPT_ECHO_REQUEST and OFPT_ECHO_REPLY follow. >> > TCP ACKs are sent/received too. >> > Sometimes packets like these are sent: >> > >> > Controller: OFPT_MULTIPART_REQUEST, OFPMP_FLOW ---> Switch >> > Switch: OFPT_MULTIPART_REPLY, OFPMP_FLOW ---> Controller >> > This message includes all the switch statistics and flow entries >> > >> >> I think ryu.app.ws_topology needs to be run in order to generate LLDP >> packets. >> >> -- >> IWAMOTO Toshihiro > _______________________________________________ > Ryu-devel mailing list > Ryu-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/ryu-devel
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