Re: [Contiki-developers] Neighbor never goes back to REACHABLE after becoming STALE / DELAY with LLSEC enabled

[Ram K. P. <ram...@gm...>]

Hi All,

I got my job done by disabling standard IPv6 Neighbor Discovery protocol as
it is not needed with RPL. However, I still feel there is an issue / bug in
Contiki w.r.t to LLSEC and IPv6 Neighbor Discovery protocol with RPL.

Thanks,
Ram

On Wed, May 18, 2016 at 3:00 PM, Ram Krishna Poricha <ram...@gm...>
wrote:

> Hi All,
>
> I am using Contiki 3.0 for communication between border router and a host
> (sleepy). I am using CC2538 for both border router and host for my testing.
> Everything was working fine until I enabled LLSEC. Once I enabled LLSEC I
> observed that after few minutess (~ 10 minutes) the host is not able to
> establish a TCP connection to a server on the internet which was working
> fine otherwise.
>
> I tried debugging the issue and found that with LLSEC enabled the neighbor
> entry on border router becomes STALE / DELAY and never returns to REACHABLE
> state. However, with LLSEC disabled, the neighbor becomes STALE / DELAY but
> subsequently becomes REACHABLE.
>
> I have attached logs for both working and non working case.
> I'll continue debugging further. However, any help in this regard is
> highly appreciated.
>
> Thanks in advance !!
>
> -- Ram Poricha
>