Hi Edison,

According to Ryu-Book, Ryu's LACP library does not seem to support aggregations 
on switch-switch
connections.

http://osrg.github.io/ryu-book/en/html/link_aggregation.html#implementing-the-link-aggregation-function-with-ryu
===
Quote: "Implementing the Link Aggregation Function with Ryu"
===
Note: Physical interfaces that exchange LACP data units are classified as 
ACTIVE and PASSIVE,
depending on their role. ACTIVE sends LACP data units at specified intervals to 
actively check
communication. PASSIVE passively checks communication by returning a response 
after receiving
the LACP data unit sent from ACTIVE.
Ryu's link aggregation application implements only the PASSIVE mode.
===

Because Ryu's LACP library implements only the PASSIVE mode, even if switches 
connected with
LACP enabled, no PDU will not be sent, and Ryu cannot activate aggregated links.
The applications on Ryu-Book are sample applications, and it seems to implement 
simply...

If you want the aggregated links on your topology, how about using "ovs-vsctl 
add-bond"
feature of OVS?
It aggregates links logically and shows bonded interfaces as a logical port 
against controller.

Thanks,
Iwase


On 2017年10月15日 09:29, Edison Albuquerque wrote:
Hi.
I've been exercising mininet with Ryu.
Currently I'm trying a topology consisting of:

host1 - 1 connection to - switch1 - two connections to - switch2 -  1 
connection to host 2

I want to use lacp in two ports of switch 1 and the corresponding two ports in 
switch 2.
Ashamed to say I failed. I'm not succeeding to ping h1 to h2.
Finally I decide to look for help.
A mininet topology code would be welcome.
Also a Ryu sample code.
Thanks, Edison.

--
/_He ain't heavy. He's my brother.
_/

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 - Fax: +55 81 3184-7581



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