[riot-devel] Fwd: Border Router using tunslip error

Viet Hoang hoangtheviet93 at gmail.com
Wed Apr 20 21:37:18 CEST 2016

Hi Martine
First thanks you for your quick reply. I do as you say, cloned newest
version and try ethos. Initially it was nice, i was able to ping between my
PC and border router (2001:db8::ff:fe00:2b), In other board (gnrc_networking)
it configure the global address automatically (2001:db8::ff:fe00:5). But
when i ping to the other board form my PC i always received Hop limit ?.
So i'm trying to ping between border_router and other board using global
address (2001), the result is same. But when I change to the local address
(fe80), it ping normally so the local address is working and global address
is not ?. I think maybe it because I disable IPHC module(require for
cc1101) and the address of cc1101 (8bit).

2016-04-20 16:17 GMT+07:00 Martine Lenders <authmillenon at gmail.com>:

> Copy from my answer on users at riot.org (please subscribe to a mailing
> list, if you are writing to it, so you can read the answers posted to
> it):
> 2016-04-20 11:05 GMT+02:00 Viet Hoang <hoangtheviet93 at gmail.com>:
> > Hello Riot.
> > My hardware is STM32 + CC1101, i was able to ping, send udp packet
> between
> > them. Now I trying to make a small example with 2 board, one as border
> > router connected to my PC via tunslip (using gnrc_border_router example),
> > and one CoAP server (using microcoap_server). My goal is to reach CoAP
> > server from my PC using Copper.
> >
> > I do exactly step in gnrc_border_router README [1] section tunslip,
> > but in my PC i can't ping to border router or microcoap_server, using.
> >
> > - ping6 2001:db8::2 (border_router)
> >
> > - ping6 2001:db8::ff:fe00:5 (microcoap_server)
> >
> > I was enabled debug in gnrc_tunslip.c and see it received and sent
> > packet normally, and tun0 RX,TX packet change in ifconfig when i ping.
> > Is there a step that I'm missing, please help.
> >
> > [1]:
> https://github.com/RIOT-OS/RIOT/tree/master/examples/gnrc_border_router
> Hi,
> did you checkout the newest version of RIOT (master)? The
> `example/gnrc_border_router` example was overhauled to use `ethos`
> (ethernet over serial-line) instead of slip. In addition to circumvent
> weird errors, because slip is address-less (and the only link-layer of
> that kind we support so far), it allows for multiplexing shell-input
> and ethos packets over the same UART. It also comes with a lot of
> tools for auto-configuration (see updated README).
> Cheers,
> Martine
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