Hi Shivaram,
If you use openflow protocol to talk to controller, then in theory its
Openflow agent only.
The another method is,
>From the Host machine Use some standard protocol (such as SNMP) or your own
proprietry to report the statistics to the controller(obviously you need to
write the listener in the controller). and this can be used in openflow
stats messages(PortStats respone)
Thanks
Suresh.
On Thu, Mar 8, 2018 at 3:58 PM, Shivaram Mysore <shivaram.mys...@gmail.com>
wrote:
> Hi Iwase
> Thanks. I am not trying to implement a openflow agent.
> Think of this as a simple tutorial where this is written as a client
> server application with Ryu controller as the openflow server accepting
> Openflow client requests. I am trying to help write a client using Ryu's
> Openflow message protocol for stats only. I don't want to use experimenter
> message structure.
>
> Does this help explain?
>
> Thanks
>
> /Shivaram
> ::Sent from my mobile device::
>
> > On Mar 7, 2018, at 11:17 PM, Iwase Yusuke <iwase.yusu...@gmail.com>
> wrote:
> >
> > Hi Shivaram
> > (and thanks Suresh!)
> >
> > You mean you want to defined own stats message structure?
> >
> > I think you can use OFPExperimenterMultipart (or inherit it) to describe
> your
> > own message, but also need to implement your switch to send that message.
> > https://github.com/osrg/ryu/blob/master/ryu/ofproto/
> ofproto_v1_3_parser.py#L5672
> >
> > Then I don't recommend to use experimenter message way. As Suresh(knet
> solutions
> > <knetsolutio...@gmail.com>) said, how about running small "agent"
> application on
> > your switch and then calling its API (via REST, RPC or so) from your Ryu
> app?
> >
> > Thanks,
> > Iwase
> >
> >
> >> On 2018年03月08日 14:53, knet solutions wrote:
> >> I think, you are trying to implement the openflow agent for the NIC
> card. In my perspective ,its not related to Controller stuff.
> >> On Thu, Mar 8, 2018 at 10:14 AM, Shivaram Mysore <
> shivaram.mys...@gmail.com <mailto:shivaram.mys...@gmail.com>> wrote:
> >> Hi Iwase,
> >> Let me clarify the use case a little bit more.
> >> Lets say, you run on Linux
> >> # ethtool -S enp1s0
> >> you will get a bunch of NIC stats. I want to wrap the same in an
> openflow
> >> message and send it to a Ryu controller running my special Ryu App
> which
> >> will connect to this client and
> >> * ask for
> >> http://ryu.readthedocs.io/en/latest/ofproto_v1_3_ref.html#
> ryu.ofproto.ofproto_v1_3_parser.OFPPortStatsRequest
> >> <http://ryu.readthedocs.io/en/latest/ofproto_v1_3_ref.html#
> ryu.ofproto.ofproto_v1_3_parser.OFPPortStatsRequest>
> >> * and I want to wrap the NIC stats and send response via
> >> http://ryu.readthedocs.io/en/latest/ofproto_v1_3_ref.html#
> ryu.ofproto.ofproto_v1_3_parser.OFPPortStatsReply
> >> <http://ryu.readthedocs.io/en/latest/ofproto_v1_3_ref.html#
> ryu.ofproto.ofproto_v1_3_parser.OFPPortStatsReply>
> >> So, I want to use the Ryu Openflow API to do this.
> >> Does this help?
> >> Thanks
> >> /Shivaram
> >> On Wed, Mar 7, 2018 at 8:27 PM, Iwase Yusuke <
> iwase.yusu...@gmail.com
> >> <mailto:iwase.yusu...@gmail.com>> wrote:
> >> Hi Shivaram,
> >> You mean you need to send some (stats?) message from Ryu
> controller to
> >> another
> >> Ryu controller, right?
> >> Hmmmm... Ryu implements the OpenFlow parsers as "Controller
> side",
> >> parsers for
> >> "from switch" messages have no "serialize()" method (some of
> messages
> >> have both
> >> "serialize()" and "parser()" for unit tests though). So you need
> to
> >> implement
> >> "serialize()" method on the stats "reply" message parser class
> to send
> >> them to
> >> another controller.
> >> Thanks,
> >> Iwase
> >> On 2018年03月08日 13:02, Shivaram Mysore wrote:
> >> Hi,
> >> I am looking for example Ryu API usage where Ryu framework
> is used
> >> to construct a Openflow message sent to Ryu controller.
> >> Use case is that I just want to send say, network statistics
> to Ryu
> >> Openflow controller where I have a Ryu application that is
> listening
> >> to Openflow stats and meter messages.
> >> Any pointers?
> >> Thanks
> >> /Shivaram
> >> ------------------------------------------------------------
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> >> --
> >> */Regards,
> >> /*
> >> */Knet solutions./*
> >> https://github.com/knetsolutions/KNet
> >> http://knet-topology-builder.readthedocs.io/
> >> http://knetsolutions.in/
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*Regards, *
*Knet solutions.*
https://github.com/knetsolutions/KNet
http://knet-topology-builder.readthedocs.io/
http://knetsolutions.in/
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