[riot-devel] Border-router and multicast

Martine Lenders mail at martine-lenders.eu
Tue May 10 19:32:04 CEST 2016


Sorry, was (and still am) otherwise occupied. Will look into it tonight,
tomorrow at the latest though.

Regards,
Martine

2016-05-10 18:05 GMT+02:00 Baptiste Clenet <bapclenet at gmail.com>:

> Ok Martine, Have you found any solution yet?
>
> 2016-05-10 9:48 GMT+02:00 Martine Lenders <mail at martine-lenders.eu>:
> > Hi Baptiste,
> > since IEEE 802.15.4 itself is not a multicast medium (it only supports
> > broadcast), and we don't have MLD implemented at this point (which
> > configures routers for multicast), multicast is indeed tricky at the
> moment.
> > Let me try something out and I come back to you.
> >
> > Cheers,
> > Martine
> >
> > 2016-05-10 9:03 GMT+02:00 Baptiste Clenet <bapclenet at gmail.com>:
> >>
> >> Thanks Alex for your answer.
> >>
> >> 2016-05-09 19:07 GMT+02:00 Alexander Aring <alex.aring at gmail.com>:
> >> > Hi,
> >> >
> >> > On Mon, May 09, 2016 at 06:20:48PM +0200, Baptiste Clenet wrote:
> >> >> 2016-05-09 16:44 GMT+02:00 Alexander Aring <alex.aring at gmail.com>:
> >> >> > On Mon, May 09, 2016 at 04:24:34PM +0200, Baptiste Clenet wrote:
> >> >> >> Hi Martine,
> >> >> >> Thank you for the answer.
> >> >> >> Ok ff04::1 is also a multicast address so I add it to every board
> >> >> >> with
> >> >> >> gnrc_networking and I should be able to ping them with this
> >> >> >> multicast
> >> >> >> address.
> >> >> >> Shouldn't I use:
> >> >> >> ifconfig 7 add multicast ff04::1
> >> >> >> ?
> >> >> >>
> >> >> >> I'm missing something here, could give me an explanation please:
> >> >> >> Before, I had a transceiver plugged on my linux so I was able to
> >> >> >> ping
> >> >> >> my board directly using fe80::address so I was able to use the
> local
> >> >> >> multicast address ff02::1, now that I use border router, I'm
> using a
> >> >> >> prefix 2001::db8 (why? and why documentation prefix?) Why can't I
> >> >> >> use
> >> >> >> fe80 as before?
> >> >> >
> >> >> > because link-local ff80::/10 will not be routed, between lowpan and
> >> >> > ethernet interface, so far I know.
> >> >>
> >> >> ff80? You meant fe80? I was able to do ping with fe80 and lowpan0.
> >> >
> >> > Sorry, I think I misunderstood here something completely.
> >> >
> >> > Your setup what is it?
> >> >
> >> > Linux (802.15.4/6LoWPAN) <-> RIOT
> >> >
> >> I used this and I was able to ping6 -I lowpan0 fe80:: but now I use
> second
> >> one
> >>
> >> > or
> >> >
> >> > Linux -> TAP (ethernet) <-> RIOT BORDER ROUTER <-> RIOT
> >>
> >> Now my setup is like this, yes and so what you explain make sense for
> >> the RIOT border router, they do what you explain but with RIOT instead
> >> of Linux :)
> >>
> >> My last question is how to send multicast information from Linux to my
> >> local network? What Martine tell me to try did not work
> >>
> >> >
> >> > You say something with lowpan0 then I think it's the first one, but I
> am
> >> > not sure now and confused. :-)
> >> >
> >> > It's a important information, if it's the second one then better
> >> > completely ignore what I said before, because I don't know how this
> >> > works exactly.
> >> >
> >> > - Alex
> >> > _______________________________________________
> >> > devel mailing list
> >> > devel at riot-os.org
> >> > https://lists.riot-os.org/mailman/listinfo/devel
> >>
> >>
> >>
> >> --
> >> Baptiste
> >> _______________________________________________
> >> devel mailing list
> >> devel at riot-os.org
> >> https://lists.riot-os.org/mailman/listinfo/devel
> >
> >
> >
> > _______________________________________________
> > devel mailing list
> > devel at riot-os.org
> > https://lists.riot-os.org/mailman/listinfo/devel
> >
>
>
>
> --
> Baptiste
> _______________________________________________
> devel mailing list
> devel at riot-os.org
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>
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