The weird thing is that: Before starting POX, I delete the flows from the switch with ovs-ofctl del-flows. After that, I cannot have pings. I start POX with l2_learning, and everything it's ok, I have pings. The flows are deleted after the timeout. I close POX. I can still have pings until I shutdown the ovs servers etc. When I type ovs-ofctl dump-flows, there are no flows on the switch but I can have pings.. I cannot understand why that happens.
2013/4/29 Sayed Qaiser Ali Shah Shah <11msitqs...@seecs.edu.pk> > > You can check flow in OVS by the following command in xterm of OVS > ovs-ofctl dump-flows. > It will show you all the flows in switch which were added. > > >> Date: Mon, 29 Apr 2013 01:07:46 -0700 >> From: Murphy McCauley <murphy.mccau...@gmail.com> >> To: Kouvakas Alexandros <questa...@gmail.com> >> Cc: pox-dev@lists.noxrepo.org >> >> Subject: Re: [pox-dev] POX on planetlab >> Message-ID: <c3dda222-c02a-4009-8bfa-e9624ea35...@gmail.com> >> Content-Type: text/plain; charset="iso-8859-1" >> >> >> (Inline) >> >> On Apr 29, 2013, at 12:56 AM, Kouvakas Alexandros wrote: >> >> > Sorry for asking again.Does anybody knows the answer on the above >> question? >> >> Sorry; I've been busy. Hopefully this brief reply will be helpful. >> >> > 2013/4/23 Kouvakas Alexandros <questa...@gmail.com> >> > Hello, >> > I managed to create my network as I would like it to be. >> > So, I have one OVS and two hosts connected to it through tunnels. >> > Before running the POX controller I delete the flows of the OVS with >> "ovs-ofctl del-flows".So, after that I cannot have pings between the >> machines. >> >> As a note, POX clears the tables as soon as switches connect by default. >> >> > After that I run the pox controller with the module of l2_learning, so >> I have new flows and I have pings. >> > How can I check the flows that are now added in the flow table? >> >> If you want to do it from within POX, send a flow stats request. There's >> some info on the POX manual wiki: >> >> https://openflow.stanford.edu/display/ONL/POX+Wiki#POXWiki-Example-WebFlowStatistics >> >> That example filters them to only show ones on port 80, but obviously you >> don't have to do that. There's also a further example in the third party >> section. And POXDesk does this and displays them. >> >> If you want to do it from the commandline, look into ovs-ofctl. >> (Something like ovs-ofctl show <switch-name>.) >> >> > I stop the POX controller and I still have pings,which means that the >> flows are somewhere saved. I need to check this flows and furthermore to >> modify them. >> >> Sure. By default, nothing in POX uninstalls them when it shuts down >> (though you could make this happen). If I recall correctly, all the ones >> from l2_learning have timeouts, so they'll expire eventually, but they'll >> stick around until then. >> >> As mentioned above, look into ovs-ofctl. And also ovs-dpctl. Or write a >> POX component to modify them how you want! >> >> -- Murphy >> >> > 2013/4/16 Kouvakas Alexandros <questa...@gmail.com> >> > Hi, >> > it's a bit irrelevant with pox mailing list but do you know how can I >> create an overlay network with one node running OVS and some hosts that are >> connected to the OVS through a subnet (let's say 192.168.3.1/24) without >> running OVS on them. I mean, can I substitute the tunnel from the host to >> the OVS with something else? >> > >> > >> > 2013/4/12 Murphy McCauley <murphy.mccau...@gmail.com> >> > On Apr 12, 2013, at 2:30 AM, Kouvakas Alexandros wrote: >> > >> >> Note that only the SENDER (the OF switch) has the controller. By this >> I mean that I run "ovs-vsctl set-controller" only on the SENDER node. >> > >> > So each machine is running OVS, but only one of the OVS instances is >> connecting to a controller? In this case, you may be able to get them to >> act as learning switches, but you can't program them from the controller, >> which is going to prevent you from doing interesting path selection using >> OpenFlow. If that's what you want to do, connect them to the controller >> either via the controller's external IP (131.188.44.100), or by setting up >> in-band control and having the control traffic go through your tunnels. >> > >> > -- Murphy >> > >> > >> > >> > -- >> > Kouvakas Alexandros >> > >> > >> > >> > -- >> > Kouvakas Alexandros >> > >> > >> > >> > -- >> > Kouvakas Alexandros >> >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: < >> http://lists.noxrepo.org/pipermail/pox-dev-noxrepo.org/attachments/20130429/88fe02c0/attachment-0001.htm >> > >> >> ------------------------------ >> >> _______________________________________________ >> pox-dev mailing list >> pox-dev@lists.noxrepo.org >> http://lists.noxrepo.org/listinfo.cgi/pox-dev-noxrepo.org >> >> >> End of pox-dev Digest, Vol 13, Issue 46 >> *************************************** >> > > > > -- > *Regards > > Sayed Qaiser Ali Shah > MSIT-12 > NUST (SEECS)* > -- Kouvakas Alexandros
