[pox-dev] Can pox connect or communicate with host?

[Chanthan Hel]

Thanks so much for your suggestion .

On Monday, April 21, 2014, Murphy McCauley <murphy.mccauley at gmail.com>
wrote:

> Whether POX can communicate with your hosts is mostly a function of your
> network setup.  In lots of cases, the network that POX communicates to
> switches on and the network that the switches control are entirely separate
> and never actually meet (often these are called the control network and the
> data network respectivelt).  In this case, having POX and a host
> communicate directly isn't possible.  Indirectly, though, there's at least
> one kind of hacky possibility.  Sam Russell did an example of it --
> tunneling between the data network and a tap interface on the controller
> machine over the OpenFlow connection via packet-in and packet-out.  (You
> could also potentially use pcap via pxpcap instead of a tap.)  There are
> issues with this approach, but it may suit some need.  You can read his
> blog post about it here:
>
> http://pieknywidok.blogspot.com/2012/09/tunneling-traffic-through-your-openflow.html
>
> A more straightforward approach is to actually have the controller machine
> exist on the data network.  This is always the case when doing "in-band
> control".  If your switches are, for example, Open vSwitch, the most
> straightforward way is using the "local" interface of the OVS instance.
>  This interface is usually down by default, but you can up it.  This
> connects the switch machine's local networking stack (which can obviously
> reach the controller because this is how the switch reaches the
> controller!) to the data network.  Obviously, you'll need to install
> appropriate table entries to allow communication between the controller
> machine (via the local port) and the host (via whatever port it's connected
> to).
>
> Hope that helps.
>
> -- Murphy
>
> On Apr 20, 2014, at 8:19 PM, Chanthan Hel <hel.chanthan65 at gmail.com<javascript:;>>
> wrote:
>
> > Dear all,
> > As usual, POX can connect and keep communication with of switch.
> > In case I want to to connect pox to host by using python socket. Is it
> possible??
> > Moreover, in between POX and host  there is one ovs, it still be
> possible to connect??
> > Chanthan
> >
> >
> > --
> > Mr. Chanthan Hel
> > Electrical engineering, Faculty of Engineering,
> > Chulalongkorn University (CU)
> >
> > *Phone: +66 81 456 84 27*
> >
>
>

-- 
Mr. Chanthan Hel
Electrical engineering, Faculty of Engineering,
Chulalongkorn University (CU)

*Phone: +66 81 456 84 27*
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