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. > > > Il giorno mer 26 set 2018 alle ore 07:39 IWAMOTO Toshihiro > > <iwam...@valinux.co.jp> ha scritto: > > On Mon, 24 Sep 2018 17:16:27 +0900, > > Lorenzo Mignone wrote: > > > > > > Hi, I am trying to use Ryu REST applications (ofctl_rest and > > > rest_topology) > > > in my exam project. > > > I am not using mininet but an alternative called Kathara that was > > > developed > > > at my university and it is based on docker. > > > > > > Whenever I use rest_topolgy /v1.0/topology/links and /v1.0/topology/hosts > > > endpoints I get back an empty array as answer. > > > Any other request does work (/stats/switches, /stats/desc/<dpid>, > > > /v1.0/topology/switches, ...). > > > So, I suppose the problem is thath the controller does not manage to get > > > links between switches. > > > > > > I edited ryu/topology/event.py to print switches and links when > > > EventSwitchBase and EventLinkBase are called and then I run this command: > > > *ryu-manager --observe-links --install-lldp-flow > > > <path-to-ryu>/app/rest_topology.py <path-to-ryu>/app/ofctl_rest.py* > > > > > > The lines I added to print switches and links produced these lines only: > > > > > > > > > *Switch<dpid=196548594862159, Port<dpid=196548594862159, port_no=1, DOWN> > > > Port<dpid=196548594862159, port_no=2, DOWN> Port<dpid=196548594862159, > > > port_no=3, DOWN> >Switch<dpid=217841702508866, Port<dpid=217841702508866, > > > port_no=1, DOWN> Port<dpid=217841702508866, port_no=2, DOWN> > > > >Switch<dpid=56026200183617, Port<dpid=56026200183617, port_no=1, DOWN> > > > Port<dpid=56026200183617, port_no=2, DOWN> Port<dpid=56026200183617, > > > port_no=3, DOWN> >* > > > > > > This information is right but links have not ben printed, so I run the > > > same > > > command with the original event.py file and the *--verbose *option and I > > > got this: > > > > > > > I guess LLDP packets are not generated or delivered for some reason. > > Could you confirm that? > > > > -- > > IWAMOTO Toshihiro -- IWAMOTO Toshihiro _______________________________________________ Ryu-devel mailing list Ryu-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ryu-devel
