Re: [nox-dev] Have any application in NOX supports multicast?
Dear Murphy KK, Thanks for your kindly reply and help. Just like KK mentioned, we might need an IGMP multicast. So, in this point, we must do something on NOX. That is, we need to implement a data structure that do the same thing as Group table for recording which ports have IGMP request. Is is right, please clear me! Thanks Jen-Wei On Mon, Mar 28, 2011 at 9:22 AM, kk yap yap...@stanford.edu wrote: Hi Jen-Wei, OpenFlow 1.1 (implemented) is released, so it is quite final for me. Also, if you are not constrained to using the group semantics (in OpenFlow 1.1), you can do multicast by listing all the ports you want to multicast to in the flow_mod command. If you are looking for IGMP multicast support, then you are looking for someone to do some work. Regards KK On 27 March 2011 17:41, James Murphy McCauley jam...@nau.edu wrote: So this is certainly not an official statement of any sort, but I would not expect to see OpenFlow 1.1 support in NOX for a while. I believe there's some consensus that supporting both 1.0 and 1.1 well will require some nontrivial API changes (and we're due for some API changes anyway), and there will be a focus on getting some of that right rather than incrementally updating NOX as has been done for previous OpenFlow versions. And before we even have 1.1 compatibility, I really would not hazard a guess about what we'd be releasing supporting multicast. Sorry! Hopefully we'll have more of an idea about this in the coming months, as well as more actual OpenFlow 1.1 implementations. (Also, as far as my limited understanding goes, OpenFlow 1.1 is still not final...) -- Murphy On Sat, 2011-03-26 at 11:33 +0800, Jen-Wei Hu wrote: Hi all, We are glad to hear the version 1.1 of OpenFlow is released because this version create a Group table for supporting multicast. Although we use the NOX that support OpenFlow 1.0, would any plan to develop an application or example which supports multicast? Or give us some advices to do it? Thank you! Bests, Jen-Wei ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Have any application in NOX supports multicast?
Hi, although that would take some effort, it is perfectly doable to hold that information on your component. You wouldn't have to use v1.1 tables or anything like that, all the state would be on your controller. While there are several packet types of packets included in the packet parsing library of NOX, IGMP messages are unfortunately one of them. So in order to extract the Join/Leave Group information, you would have to parse them manually (or add a relevant igmp.py in lib/packet/, following the paradigm of the other packet classes. such an addition would be welcome). On Wed, Mar 30, 2011 at 11:20 PM, Jen-Wei Hu jenwe...@gmail.com wrote: Dear Murphy KK, Thanks for your kindly reply and help. Just like KK mentioned, we might need an IGMP multicast. So, in this point, we must do something on NOX. That is, we need to implement a data structure that do the same thing as Group table for recording which ports have IGMP request. Is is right, please clear me! Thanks Jen-Wei On Mon, Mar 28, 2011 at 9:22 AM, kk yap yap...@stanford.edu wrote: Hi Jen-Wei, OpenFlow 1.1 (implemented) is released, so it is quite final for me. Also, if you are not constrained to using the group semantics (in OpenFlow 1.1), you can do multicast by listing all the ports you want to multicast to in the flow_mod command. If you are looking for IGMP multicast support, then you are looking for someone to do some work. Regards KK On 27 March 2011 17:41, James Murphy McCauley jam...@nau.edu wrote: So this is certainly not an official statement of any sort, but I would not expect to see OpenFlow 1.1 support in NOX for a while. I believe there's some consensus that supporting both 1.0 and 1.1 well will require some nontrivial API changes (and we're due for some API changes anyway), and there will be a focus on getting some of that right rather than incrementally updating NOX as has been done for previous OpenFlow versions. And before we even have 1.1 compatibility, I really would not hazard a guess about what we'd be releasing supporting multicast. Sorry! Hopefully we'll have more of an idea about this in the coming months, as well as more actual OpenFlow 1.1 implementations. (Also, as far as my limited understanding goes, OpenFlow 1.1 is still not final...) -- Murphy On Sat, 2011-03-26 at 11:33 +0800, Jen-Wei Hu wrote: Hi all, We are glad to hear the version 1.1 of OpenFlow is released because this version create a Group table for supporting multicast. Although we use the NOX that support OpenFlow 1.0, would any plan to develop an application or example which supports multicast? Or give us some advices to do it? Thank you! Bests, Jen-Wei ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Have any application in NOX supports multicast?
Dear Kyriakos, Thanks for your quickly help. Last week, I found in lib/packet have some files, such as arp or icmp. That time, I think may not follow them to do similar thing. But after your explanation, I think we are wrong and must to do it. The other thing is we also record which ports contain vedio streaming, is it right? Thanks Jen-Wei On Thu, Mar 31, 2011 at 2:29 PM, Kyriakos Zarifis kyr.zari...@gmail.comwrote: Hi, although that would take some effort, it is perfectly doable to hold that information on your component. You wouldn't have to use v1.1 tables or anything like that, all the state would be on your controller. While there are several packet types of packets included in the packet parsing library of NOX, IGMP messages are unfortunately one of them. So in order to extract the Join/Leave Group information, you would have to parse them manually (or add a relevant igmp.py in lib/packet/, following the paradigm of the other packet classes. such an addition would be welcome). On Wed, Mar 30, 2011 at 11:20 PM, Jen-Wei Hu jenwe...@gmail.com wrote: Dear Murphy KK, Thanks for your kindly reply and help. Just like KK mentioned, we might need an IGMP multicast. So, in this point, we must do something on NOX. That is, we need to implement a data structure that do the same thing as Group table for recording which ports have IGMP request. Is is right, please clear me! Thanks Jen-Wei On Mon, Mar 28, 2011 at 9:22 AM, kk yap yap...@stanford.edu wrote: Hi Jen-Wei, OpenFlow 1.1 (implemented) is released, so it is quite final for me. Also, if you are not constrained to using the group semantics (in OpenFlow 1.1), you can do multicast by listing all the ports you want to multicast to in the flow_mod command. If you are looking for IGMP multicast support, then you are looking for someone to do some work. Regards KK On 27 March 2011 17:41, James Murphy McCauley jam...@nau.edu wrote: So this is certainly not an official statement of any sort, but I would not expect to see OpenFlow 1.1 support in NOX for a while. I believe there's some consensus that supporting both 1.0 and 1.1 well will require some nontrivial API changes (and we're due for some API changes anyway), and there will be a focus on getting some of that right rather than incrementally updating NOX as has been done for previous OpenFlow versions. And before we even have 1.1 compatibility, I really would not hazard a guess about what we'd be releasing supporting multicast. Sorry! Hopefully we'll have more of an idea about this in the coming months, as well as more actual OpenFlow 1.1 implementations. (Also, as far as my limited understanding goes, OpenFlow 1.1 is still not final...) -- Murphy On Sat, 2011-03-26 at 11:33 +0800, Jen-Wei Hu wrote: Hi all, We are glad to hear the version 1.1 of OpenFlow is released because this version create a Group table for supporting multicast. Although we use the NOX that support OpenFlow 1.0, would any plan to develop an application or example which supports multicast? Or give us some advices to do it? Thank you! Bests, Jen-Wei ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Have any application in NOX supports multicast?
On Wed, Mar 30, 2011 at 11:38 PM, Jen-Wei Hu jenwe...@gmail.com wrote: Dear Kyriakos, Thanks for your quickly help. Last week, I found in lib/packet have some files, such as arp or icmp. That time, I think may not follow them to do similar thing. But after your explanation, I think we are wrong and must to do it. The other thing is we also record which ports contain vedio streaming, is it right? Do you mean keep track of the multicast sources? I guess that depends on the implementation. You might not necessarily have to do that. (In traditional multicast with shared trees, the routers only care about which of their ports lead to interested multicast listeners, and don't necessarily hold any state about the sources.) But yes, since there's a centralized controller with the view of the topology, it mightmake sense to register the sources' locations with the controller, and create the trees in a more static way (meaning, in traditional MC a join message would propagate all the way up to a Rendezvous Point, but with NOX you could probably grab the IGMP join at the leaf, and figure out how to connect the leaf to your tree in NOX) Thanks Jen-Wei On Thu, Mar 31, 2011 at 2:29 PM, Kyriakos Zarifis kyr.zari...@gmail.comwrote: Hi, although that would take some effort, it is perfectly doable to hold that information on your component. You wouldn't have to use v1.1 tables or anything like that, all the state would be on your controller. While there are several packet types of packets included in the packet parsing library of NOX, IGMP messages are unfortunately one of them. So in order to extract the Join/Leave Group information, you would have to parse them manually (or add a relevant igmp.py in lib/packet/, following the paradigm of the other packet classes. such an addition would be welcome). On Wed, Mar 30, 2011 at 11:20 PM, Jen-Wei Hu jenwe...@gmail.com wrote: Dear Murphy KK, Thanks for your kindly reply and help. Just like KK mentioned, we might need an IGMP multicast. So, in this point, we must do something on NOX. That is, we need to implement a data structure that do the same thing as Group table for recording which ports have IGMP request. Is is right, please clear me! Thanks Jen-Wei On Mon, Mar 28, 2011 at 9:22 AM, kk yap yap...@stanford.edu wrote: Hi Jen-Wei, OpenFlow 1.1 (implemented) is released, so it is quite final for me. Also, if you are not constrained to using the group semantics (in OpenFlow 1.1), you can do multicast by listing all the ports you want to multicast to in the flow_mod command. If you are looking for IGMP multicast support, then you are looking for someone to do some work. Regards KK On 27 March 2011 17:41, James Murphy McCauley jam...@nau.edu wrote: So this is certainly not an official statement of any sort, but I would not expect to see OpenFlow 1.1 support in NOX for a while. I believe there's some consensus that supporting both 1.0 and 1.1 well will require some nontrivial API changes (and we're due for some API changes anyway), and there will be a focus on getting some of that right rather than incrementally updating NOX as has been done for previous OpenFlow versions. And before we even have 1.1 compatibility, I really would not hazard a guess about what we'd be releasing supporting multicast. Sorry! Hopefully we'll have more of an idea about this in the coming months, as well as more actual OpenFlow 1.1 implementations. (Also, as far as my limited understanding goes, OpenFlow 1.1 is still not final...) -- Murphy On Sat, 2011-03-26 at 11:33 +0800, Jen-Wei Hu wrote: Hi all, We are glad to hear the version 1.1 of OpenFlow is released because this version create a Group table for supporting multicast. Although we use the NOX that support OpenFlow 1.0, would any plan to develop an application or example which supports multicast? Or give us some advices to do it? Thank you! Bests, Jen-Wei ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
Re: [nox-dev] Have any application in NOX supports multicast?
Hi Jen-Wei, OpenFlow 1.1 (implemented) is released, so it is quite final for me. Also, if you are not constrained to using the group semantics (in OpenFlow 1.1), you can do multicast by listing all the ports you want to multicast to in the flow_mod command. If you are looking for IGMP multicast support, then you are looking for someone to do some work. Regards KK On 27 March 2011 17:41, James Murphy McCauley jam...@nau.edu wrote: So this is certainly not an official statement of any sort, but I would not expect to see OpenFlow 1.1 support in NOX for a while. I believe there's some consensus that supporting both 1.0 and 1.1 well will require some nontrivial API changes (and we're due for some API changes anyway), and there will be a focus on getting some of that right rather than incrementally updating NOX as has been done for previous OpenFlow versions. And before we even have 1.1 compatibility, I really would not hazard a guess about what we'd be releasing supporting multicast. Sorry! Hopefully we'll have more of an idea about this in the coming months, as well as more actual OpenFlow 1.1 implementations. (Also, as far as my limited understanding goes, OpenFlow 1.1 is still not final...) -- Murphy On Sat, 2011-03-26 at 11:33 +0800, Jen-Wei Hu wrote: Hi all, We are glad to hear the version 1.1 of OpenFlow is released because this version create a Group table for supporting multicast. Although we use the NOX that support OpenFlow 1.0, would any plan to develop an application or example which supports multicast? Or give us some advices to do it? Thank you! Bests, Jen-Wei ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev ___ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev
