If you don't want to hardcode dpids (which is a good idea :-) ), you can
try to use configuration file with switch to rules bindings.
Look at this thread about working with configuration file from Ryu app:
https://sourceforge.net/p/ryu/mailman/message/35382122/
Also you can find interesting tricks in Greg Bernstein's post:
http://www.grotto-networking.com/SDNfun.html
Best Regards,
Nick
пн, 7 нояб. 2016 г. в 16:47, Aqsa Malik <[email protected]>:
> Alright thank you guys.
> I was just looking for a more sophisticated way to use in the code, rather
> than:
> if dpid == 1:
> ... add these rules..
> if dpid ==2:
> ...add these rules...
> Thanks :-)
>
> On Sun, Nov 6, 2016 at 6:46 AM, Iwase Yusuke <[email protected]>
> wrote:
>
> Hi,
>
> I'm agree with Nick.
> The way which the OpenFlow Spec says to differ the switches is only DPID,
> IIRC.
> The IP addresses of the switches might be used, but if the DPIDs are
> duplicated,
> this way will collapse.
>
> Thanks,
> Iwase
>
>
> On 2016年11月03日 00:59, Nick Sedelnikov wrote:
> > Sorry, maybe I misunderstood your question, but if you want to differ
> two switches you have only one option - DPID of the switch.
> >
> >
> > ср, 2 нояб. 2016 г. в 18:51, Aqsa Malik <[email protected] <mailto:
> [email protected]>>:
> >
> > But let's say I am adding the rules proactively in the
> (EventSwitchEnter).
> > How can i differentiate between the two switches, because they can
> be connected to the controller in any order.
> >
> > On Wed, Nov 2, 2016 at 4:24 PM, Nick Sedelnikov <
> [email protected] <mailto:[email protected]>> wrote:
> >
> > Hi,
> >
> > You should look at DPSet to retrieve Datapath objects from ryu:
> >
> http://ryu.readthedocs.io/en/latest/api_ref.html#ryu.controller.dpset.DPSet
> >
> > Then use standard datapath.send_msg(msg)
> >
> > Best Regards,
> > Nikolay Sedelnikov
> >
> > ср, 2 нояб. 2016 г. в 17:54, Aqsa Malik <[email protected]
> <mailto:[email protected]>>:
> >
> > Hi All,
> >
> > I want two add rules on two different switches using one Ryu
> application. What is the possible way to do that with two different dpid's
> to handle.
> >
> > Thanks
> >
>
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> > --
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> >
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