Thanks so much for your suggestion . On Monday, April 21, 2014, Murphy McCauley <murphy.mccau...@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.chantha...@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*