Hi Yi,
On 2017年04月01日 05:26, Yi Tseng wrote: > Hi, > > Please don't drop mailing list. > > It looks like the host discovery handler didn't handle the packet in message > > The reason I guess is that the packet in message was dropped by host > discovery handler. > > The handler only drop LLDP and CFM message. > > I guess there is no correct packet in message sent to the controller because > all host packet follows the flow you installed already. > > > Hello Iwase, > > Should we install new packet_in flow entry for ARP packet by default? (or add > --observe-hosts option?) Oh, me!? Just my opinion... "--observe-hosts" option is the good idea for me, but installing flows for ARP packets might have some "side effects" to Apps which do not expect for such (forced sent?) Packet-In messages, I guess. e.g.) - simple_switch does not take care of multiple Packet-In from the same host. - flows for ARP packets might increase the cost for handling messages. OTOH, it is difficult to define the standard way to discover host like LLDP for discovering switches. If we can notify users that the above aspects of "--observe-hosts" option users, it should be a good option for us! Thanks, Iwase > > > -Yi > > 2017-03-31 5:57 GMT-07:00 Edison Albuquerque <[email protected] > <mailto:[email protected]>>: > > Hi Yi. > Sorry I took so long to answer. > I've been flooded with other tasks. > I send, attached, a file with the mininet command I used, the ryu-manager > command I used, the flows in switch S1 and the debug information you asked > me. I hope this will help. > If you need more info, please, just say it and I'll run for it. > Bests, Edison. > > 2017-03-17 17:31 GMT-03:00 Yi Tseng <[email protected] > <mailto:[email protected]>>: > > I think currently there is no "--observe-hosts" option for Ryu now. > > If your OpenFlow version is 1.3, you should install packet lost flow > in switch first. > > Ryu use packet-in message to discover hosts > > > Yi > > 2017-03-17 12:35 GMT-07:00 Edison Albuquerque <[email protected] > <mailto:[email protected]>>: > > OK. > I'll do it this weekend. > Openflow used is 1.3. > My code changes yours "Topology-Discovery", for I add get_host. > Maybe there is a --observe-hosts similar to --observe-link. > Tks, > > 2017-03-17 14:42 GMT-03:00 Yi Tseng <[email protected] > <mailto:[email protected]>>: > > Hi > > Please don't drop mailing list. > > 1. Can you paste your debug information here? (with > "--verbose"), to make sure anything works fine. > > 2. What version OpenFlow you are use? > > 3. Can you show flows in the switch? > > Thanks > > > Yi > > 2017-03-17 4:21 GMT-07:00 Edison Albuquerque > <[email protected] <mailto:[email protected]>>: > > Thanks. > In Mininet I typed "pingall" and then ran Ryu Controller > again but the host list was still empty. > I upgrade my Ryu to last version. Maybe I must upgrade > Mininet too. > Another way I visualized is to print mac-to-port > dictionairy, after "pingall". > > > 2017-03-16 20:12 GMT-03:00 Yi Tseng <[email protected] > <mailto:[email protected]>>: > > Hi, > > Host should be discovered when a host sent a packet > (ip, arp...) > > Yi > > 2017-03-16 7:49 GMT-07:00 Edison Albuquerque > <[email protected] <mailto:[email protected]>>: > > Using the code that is inside Ryu Manual, I was > able to see the switches of the network I created with Mininet, as well as > see the links between them. > I changed the code a little bit to include > get_host() but could not see the hosts. All I see is an empty list. > Is it possible to discovery the topology down to > the hosts? > Thanks. > Edison. > > /_Todos querem um mundo melhor. Poucos colaboram. > _/ > > Prof. Edison de Queiroz Albuquerque, BSc, Msc, Dr. > Adjunto da Escola Politécnica de Pernambuco, > Universidade de Pernambuco (POLI/UPE) > Professor do Curso de Engenharia de Computação > Líder do Grupo de Pesquisa em Protocolos de > Redes de Computadores > Membro do IEEE (ComSoc), do SBrT, do IECOM e da > APEET > > Universidade de Pernambuco/Escola Politécnica de > Pernambuco > Rua Benfica, 455 (Bl. 'C' 2. andar) - Bairro: > Madalena > CEP 50720-001 - Recife, Pernambuco - Brasil > Fone: +55 81 3184-7542 <tel:+55%2081%203184-7542> > - Fax: +55 81 3184-7581 <tel:+55%2081%203184-7581> > > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of > the world's most > engaging tech sites, Slashdot.org! > http://sdm.link/slashdot > _______________________________________________ > Ryu-devel mailing list > [email protected] > <mailto:[email protected]> > > https://lists.sourceforge.net/lists/listinfo/ryu-devel > <https://lists.sourceforge.net/lists/listinfo/ryu-devel> > > > > > -- > Yi Tseng (a.k.a Takeshi) > Taiwan National Chiao Tung University > Department of Computer Science > W2CNLab > > https://takeshi.tw > > > > > -- > /_Todos querem um mundo melhor. Poucos colaboram. > _/ > > Prof. Edison de Queiroz Albuquerque, BSc, Msc, Dr. > Adjunto da Escola Politécnica de Pernambuco, Universidade > de Pernambuco (POLI/UPE) > Professor do Curso de Engenharia de Computação > Líder do Grupo de Pesquisa em Protocolos de Redes de > Computadores > Membro do IEEE (ComSoc), do SBrT, do IECOM e da APEET > > Universidade de Pernambuco/Escola Politécnica de > Pernambuco > Rua Benfica, 455 (Bl. 'C' 2. andar) - Bairro: Madalena > CEP 50720-001 - Recife, Pernambuco - Brasil > Fone: +55 81 3184-7542 <tel:+55%2081%203184-7542> - Fax: > +55 81 3184-7581 <tel:+55%2081%203184-7581> > > > > > -- > Yi Tseng (a.k.a Takeshi) > Taiwan National Chiao Tung University > Department of Computer Science > W2CNLab > > https://takeshi.tw > > > > > -- > /_Todos querem um mundo melhor. Poucos colaboram. > _/ > > Prof. Edison de Queiroz Albuquerque, BSc, Msc, Dr. > Adjunto da Escola Politécnica de Pernambuco, Universidade de > Pernambuco (POLI/UPE) > Professor do Curso de Engenharia de Computação > Líder do Grupo de Pesquisa em Protocolos de Redes de Computadores > Membro do IEEE (ComSoc), do SBrT, do IECOM e da APEET > > Universidade de Pernambuco/Escola Politécnica de Pernambuco > Rua Benfica, 455 (Bl. 'C' 2. andar) - Bairro: Madalena > CEP 50720-001 - Recife, Pernambuco - Brasil > Fone: +55 81 3184-7542 <tel:+55%2081%203184-7542> - Fax: +55 81 > 3184-7581 <tel:+55%2081%203184-7581> > > > > > -- > Yi Tseng (a.k.a Takeshi) > Taiwan National Chiao Tung University > Department of Computer Science > W2CNLab > > https://takeshi.tw > > > > > -- > /_Todos querem um mundo melhor. Poucos colaboram. > _/ > > Prof. Edison de Queiroz Albuquerque, BSc, Msc, Dr. > Adjunto da Escola Politécnica de Pernambuco, Universidade de Pernambuco > (POLI/UPE) > Professor do Curso de Engenharia de Computação > Líder do Grupo de Pesquisa em Protocolos de Redes de Computadores > Membro do IEEE (ComSoc), do SBrT, do IECOM e da APEET > > Universidade de Pernambuco/Escola Politécnica de Pernambuco > Rua Benfica, 455 (Bl. 'C' 2. andar) - Bairro: Madalena > CEP 50720-001 - Recife, Pernambuco - Brasil > Fone: +55 81 3184-7542 <tel:+55%2081%203184-7542> - Fax: +55 81 3184-7581 > <tel:+55%2081%203184-7581> > > > > > -- > Yi Tseng (a.k.a Takeshi) > Taiwan National Chiao Tung University > Department of Computer Science > W2CNLab > > https://takeshi.tw ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Ryu-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ryu-devel
