Re: [6lowpan] [Roll] draft-kelsey-intarea-mesh-link-establishment-03.txt

Don Sturek <d.sturek@att.net> Fri, 15 June 2012 14:00 UTC

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Date: Fri, 15 Jun 2012 06:59:50 -0700
From: Don Sturek <d.sturek@att.net>
To: Michael Richardson <mcr+ietf@sandelman.ca>, Thomas Heide Clausen <ietf@thomasclausen.org>
Message-ID: <CC008D73.17080%d.sturek@att.net>
Thread-Topic: [6lowpan] [Roll] draft-kelsey-intarea-mesh-link-establishment-03.txt
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Cc: "<roll@ietf.org>" <roll@ietf.org>, "<6lowpan@ietf.org>" <6lowpan@ietf.org>, "<ipv6@ietf.org>" <ipv6@ietf.org>
Subject: Re: [6lowpan] [Roll] draft-kelsey-intarea-mesh-link-establishment-03.txt
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Hi Michael,

We believe UDP makes the most sense as a transport for MLE.  ICMP will
take entirely too long and will end up being a maintenance issue if there
are additional information exchanges needed using MLE.

While the ZigBee Alliance is using ROLL RPL and 6LoWPAN, the information
exchanged in MLE is not tied specifically to those protocols (however,
those implementing will find the exchange useful......)

Don


On 6/15/12 6:12 AM, "Michael Richardson" <mcr+ietf@sandelman.ca> wrote:

>
>>>>>> "Thomas" == Thomas Heide Clausen <ietf@thomasclausen.org> writes:
>    Thomas> Not sure how fantastic (or not) it is - it is not
>    Thomas> immediately clear to me how tied MLE should be to RPL - if
>    Thomas> it truly aims at being for _MESH_ link establishment, then
>    Thomas> it would appear to be a much larger scope, and should not be
>    Thomas> tied narrowly to a special-purpose protocol's type-space (&
>    Thomas> conventions etc., that do not apply universally).
>
>Thomas, you will note that:
>  1) I suggested it go under IPv6 ICMP first, and if there was such push
>     back about allocating a new type, that RPL could allocate a
>type/code.
>  2) ZigBee alliance (the proposal), *IS* using RPL.
>
>I see running it over UDP very architecturally strange.
>
>-- 
>Michael Richardson <mcr+IETF@sandelman.ca>ca>, Sandelman Software Works
>IETF ROLL WG co-chair.    http://datatracker.ietf.org/wg/roll/charter/
>