Hi Carlos,

The OpenFlow Spec does not directly provide the mechanism for the multi-path 
load balancing and
also Ryu does not provide it.
I guess it is depending on your application design...

But for the beginning, how about using the Group action(the "select" type)?
The selection algorithm is depending on your switch though, it provides an easy 
way to do load
balancing.
Please refer to the section "5.6.1 Group Types" in the OpenFlow Spec 1.3.5 for 
the details:
  
https://www.opennetworking.org/wp-content/uploads/2014/10/openflow-switch-v1.3.5.pdf

Thanks,
Iwase


On 2017年11月22日 06:13, Jose Carlos Ferreira de Melo Junior wrote:
Hi guys

I'm new here so I'm not quite sure how this mailing list works...but it' ok
  jumping right on the problem

I'm doing an experiment where I have a simple ring topology on mininet



Imagem inline 1


and What I'm trying to do is just a load balancer using openflow on Ryu.

As i'm using a ring topology I'm working over a simple_switch_stp_13.py to 
prevent from any loop.

The situation that I'm trying to do is if the link between h2 and h1 is overloaded h2 send the traffic to another way going through s3 to reach h1

So first I would like to know if it is possible to make a load balancer like I described without using a rest_qos.py? And how could I start?


--
Best Regards,
José Carlos Ferreira
Msc student Computer Science



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