Hi Iwase,
Thanks for your response! In attach I've added a figure of my setup and with
that I will try to explain the problem:
So, I have two switches, each connected (with a normal port = controller port)
to the Ryu Controller. These switches are interconnected with each other with
an OF-port. On switch one, there are two host, on the second switch only one.
My test case:
- From Host 3, ping to Host 1 (ping 192.168.0.10) --> No problems, flows are
added and after some time, the learning switch don't receive any package in any
more (because of the flows)
- From Host 3, ping to Host 2 (ping 192.168.0.20) --> Here the problem starts:
because of the ping to an unknown host, you will flood. The package will go to
the first switch, flood, ... But when Host 2 responds and the package arrives
at the second switch (till here everything is working normal), this flow won't
be added, because the destination (Host 3) is already known as a flow. The
consequence: the source (Host 2) is never added to a flow on the second switch,
and thus the controller will always flood a message on the second switch.
Hope you can reproduce the problem now (FYI: I'm using OF 1.3)! If not, I will
redo my test and provide you with some screenshots.
Thanks in advance!
Kind regards,
Jerico Moeyersons
________________________________
Van: Iwase Yusuke <iwase.yusu...@gmail.com>
Verzonden: vrijdag 24 november 2017 8:04
Aan: jeric...@hotmail.com
CC: ryu-devel@lists.sourceforge.net
Onderwerp: Re: [Ryu-devel] simple_switch_13.py
Hi Jerico,
Thank you for your report!
Adding "eth_src=src" in the match looks good to me, but please confirm your
situation.
You mean this issue will occur, when we do the following?
- Connect to the first switch and learn the connected hosts
- Connect to the second switch and try to learn the new hosts
---> the second switch cannot learn the connected hosts which the first switch
already know
I asked this question because I couldn't reproduce your situation on my
environment (Mininet).
Thanks,
Iwase
On 2017年11月24日 00:19, Jerico Moeyersons wrote:
> Hello everyone,
>
> I'm kinda new to bug reporting, so I found this e-mail address. If I need to
> do it elsewhere, please
> notify me of that!
>
> The reason why I mail you is because I found a 'bug' (or maybe it is the
> purpose of the example) in
> the example switch. Here, a flow is added with as match the destination and
> the in_port. But when
> you combine two switches (I use the small Zodiac FX switch), this will have
> the issue that when you
> want to add a second flow to something on the second switch, no new flow is
> added (because the
> destination is know, ...).
>
> So my suggestion: add the eth_src=src in the match entry before adding the
> flow (this solved the
> issue for me).
>
> Can you please provide feedback?
>
> Thanks in advance!
>
> Kind regards,
>
> Jerico Moeyersons
>
>
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