Hi,

Thanks Toshihiro.
I'm still unable to figure out the problem. I'm still unable to  ping from
h1(in VM1) to 10.0.3.3(in VM2)
Any help in this regards would be highly appreciated.

Thanks
Hadem

On Wed, Oct 24, 2018 at 2:30 PM IWAMOTO Toshihiro <iwam...@valinux.co.jp>
wrote:

> On Fri, 19 Oct 2018 23:56:38 +0900,
> Pynbiang Hadem wrote:
> >
> > [1  <multipart/alternative (7bit)>]
> > [1.1  <text/plain; UTF-8 (7bit)>]
> > Hi,
> >
> > I am running two VMs; *VM1* and *VM2*. Each VM has a simple topology as
> > follows.
> >
> >        *VM1:*              * VM2:*
> >        ====                                       ====
> > h1------s1--------s2 <--------> s4--------s3---------h3
> >             |                                              |
> >            h2                                           h4
> >
> > I am using *internal network* to connect the two VMs.
> > VM1 has an internal adapter with IP: 192.168.1.1
> > VM1 has an internal adapter with IP: 192.168.1.254
> >
> > I'm  using a GRE tunnel in the mininet python script as below:
> > # Configure the GRE tunnel On VM1:
> > s2.cmd('ovs-vsctl add-port s2 s2-gre1 -- set interface s2-gre1 type=gre
> > options:remote_ip=192.168.1.1')
> >
> > # Configure the GRE tunnel On VM2:
> > s4.cmd('ovs-vsctl add-port s4 s4-gre1 -- set interface s4-gre1 type=gre
> > options:remote_ip=192.168.1.254')
> >
> > If i run (controller -v ptcp:6633) or (sudo ryu-manager --verbose
> > ryu/app/simple_switch_13.py) as controller in VM1 and VM2, i am able to
> > ping from h1 to 10.0.3.3(h3 on VM2).
> >
> > However, when i run (sudo ryu-manager --verbose ryu/app/rest_router.py) i
> > am not able to ping from h1 to to 10.0.3.3(h3 on VM2).
>
> They differ how L2 switching is performed.
> AFAIK rest_router does L2 switching using OFPP_NORMAL, while
> simple_switch_13 implements the switching logic.
>
> I have no idea why OFPP_NORMAL doesn't work in your setup.
> Please use tcpdump, ovs-ofctl dump-flows, etc. to find where your
> packets are dropped to debug the problem.
>
> --
> IWAMOTO Toshihiro
>
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