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Re: [6tisch] I-D Action: draft-ietf-6tisch-enrollment-enhanced-beacon-00.txt

Michael Richardson <mcr+ietf@sandelman.ca> Sun, 23 September 2018 20:38 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: "Georgios Z. Papadopoulos" <georgios.papadopoulos@imt-atlantique.fr>
cc: "Pascal Thubert (pthubert)" <pthubert@cisco.com>, tisch <6tisch@ietf.org>, roll@ietf.org
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Date: Sun, 23 Sep 2018 16:38:32 -0400
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Subject: Re: [6tisch] I-D Action: draft-ietf-6tisch-enrollment-enhanced-beacon-00.txt
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Georgios Z. Papadopoulos <georgios.papadopoulos@imt-atlantique.fr> wrote:
    > Many thanks for this work.  Going through the draft, I have a
    > comment/question :

    > Considering that “The containing Enhanced Beacon is not encrypted.”
    > (Section 3), is it necessary to include “rank priority” at L2 and,
    > thus, revealing this information?

I consider it a concern as well.

When returning from a deep sleep,  where there may be multiple
LLNs on different PANIDs (and in 6tisch, with different schedules, even using
different sets of channels),  there is a desire to know which network will
"closer".

I think that we need to understand the tradeoffs, so let's discuss
(also in the ROLL WG!).  Perhaps a compromise is that the rank priority can
be forced to maximum value on networks that want to keep the information
private.

--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-

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