Hi Just logging here. I think the cause of the issue is not connection between OVS switch and ryu controller. Rather, my controller application has a bug that enters an infinite loop in a particular instance and this is causing the controller to hang .. will report back if the issue still persists.
Regards Cheers! Durga On Fri, Apr 17, 2020 at 10:21 PM durga <c.vijaya.du...@gmail.com> wrote: > > so , I am assuming you don't see this freezing behaviour in newer > controller version? Interesting. I will try running my program with newer > version. But I am curious to know if this is a known issue? > > Regards > > On Fri, 17 Apr 2020 at 10:18 pm, Leandro Pereira <leandroecom...@gmail.com> > wrote: > >> Maybe you should try a newer version. I'm using Ryu 4.34 on Debian 10.3. >> Works well. >> >> Em sex., 17 de abr. de 2020 às 07:48, durga <c.vijaya.du...@gmail.com> >> escreveu: >> >>> Hello, >>> I am currently using v4.27. >>> >>> Regards >>> >>> On Fri, 17 Apr 2020 at 8:37 pm, Leandro Pereira < >>> leandroecom...@gmail.com> wrote: >>> >>>> Hi Durga >>>> What version of Ryu are you using? >>>> >>>> Em qui., 16 de abr. de 2020 às 23:23, durga <c.vijaya.du...@gmail.com> >>>> escreveu: >>>> >>>>> Hi all, >>>>> >>>>> I am observing a strange behavior when I run Ryu controller application >>>>> Application: >>>>> class Switch(): >>>>> ... >>>>> class Monitor(Switch): >>>>> ... >>>>> writes to a file >>>>> >>>>> Now, When I start sending cross UDP traffic on the network( 4 >>>>> switches), the monitor module freezes at some point and doesn't write to >>>>> the file. One of the possible reasons I can think of is Ryu controller >>>>> requesting port-stats from the switch and waits forever for the switch to >>>>> respond. I am not too sure why the switch fails to respond. Can large load >>>>> of data-plane traffic keep the switch busy to not respond to the >>>>> controller?Also I don't quite see exact behavior for TCP traffic? >>>>> >>>>> Any insights or suggestions >>>>> >>>>> >>>>> Cheers! >>>>> Durga >>>>> >>>>> _______________________________________________ >>>>> Ryu-devel mailing list >>>>> Ryu-devel@lists.sourceforge.net >>>>> https://lists.sourceforge.net/lists/listinfo/ryu-devel >>>> >>>> >>>>> >>>> >>>> -- >>>> Leandro Pereira >>>> >>> -- >>> Cheers! >>> Durga >>> >>> >> >> -- >> Leandro Pereira >> > -- > Cheers! > Durga > >
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