Hi, I found the LLDP packets on the ports between the switches eventually. However I still get an empty array when asking for links to ryu.app.rest_topology.
I think my datapaths' Open vSwitch configuration is wrong. Thanks. Il giorno gio 27 set 2018 alle ore 15:52 Yusuke Iwase < iwase.yusu...@gmail.com> ha scritto: > 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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