[pox-dev] send packet from controller

[Silvia Fichera]

>  In which case, there's no way to send except via a datapath or a host
which actually is.
Can you clarify this sentence?

Am I following the right way to send packets from the controller to hosts
through switches, so using my network, or do I miss something?


2013/7/20 Murphy McCauley <murphy.mccauley at gmail.com>

> If I'm understanding correctly, the problem is that the controller isn't
> necessarily *on* the data network.  In Mininet, for example, it is often
> the case that the controller and the datapaths are linked essentially by a
> separate management network, and this is not an unusual case in the real
> world either.  In which case, there's no way to send except via a datapath
> or a host which actually is.
>
> Hope that helps.
>
> -- Murphy
>
> On Jul 19, 2013, at 3:39 PM, Silvia Fichera wrote:
>
> Hello,
> I am having trouble sending packets from l3_learning controller to host.
> I would like to send UDP packets but if I try to use normal socket from
> controller I see no traffic (I minotired it with wireshark on all switches)
> unless I send to itself (127.0.0.1).  I was also trying to make a switch
> sending the controller generated packet in this way:
>
> http://lists.noxrepo.org/pipermail/pox-dev-noxrepo.org/2012-October/000281.html
>
> Although I have no traffic too.
> I guess the problem is that I am missing something like
>
>  self.connection.send(msg)
>
> but I don't have any datapath connection with any switch since I want to
> start the communication from the controller.
> Is there an easier way to send these udp packets?
>
> thanks
>
> --
> Silvia Fichera
>
>
>


-- 
Silvia Fichera
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