Re: [Anima-bootstrap] 6tisch join -01 documented posted

Brian E Carpenter <brian.e.carpenter@gmail.com> Mon, 14 November 2016 00:06 UTC

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To: Michael Richardson <mcr@sandelman.ca>
References: <20351.1476971471@obiwan.sandelman.ca> <0343d14c-5b18-b821-c9ad-d77fb7dae490@gmail.com> <12808a8a-5de1-c6cb-3f96-945573041ee4@gmail.com> <24910.1479078501@dooku.sandelman.ca>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Date: Mon, 14 Nov 2016 13:06:33 +1300
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Cc: anima-bootstrap <anima-bootstrap@ietf.org>, 6tisch-security <6tisch-security@ietf.org>
Subject: Re: [Anima-bootstrap] 6tisch join -01 documented posted
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On 14/11/2016 12:08, Michael Richardson wrote:
> Brian E Carpenter <brian.e.carpenter@gmail.com> wrote:
>     > My model was that the proxy would get all the floods available and
>     > choose the one it liked best, based on the available method and
>     > distance, using the weight and priority as for mDNS. (Personally I
>     > think the mDNS stuff is overkill, but Toerless suggested we should be
>     > feature-equivalent.)
> 
> I never proposed that the Proxy would learn of the registrar via mDNS, btw.
> 
>     > 2. Your CDDL looks OK to me. The format and semantics of the value
>     > field of a GRASP objective are completely flexible, so I don't see a
>     > problem with the first "request" to the Registrar being [IID,
>     > join-method]. The reply from the registrar could be [IID,
>     > another-join-method] if it didn't like the first one proposed. Once
>     > either side receives a join-method it likes, it would send
>     > [M_END,,[O_ACCEPT]] and we're done.
> 
>     > 3. Mini-question, is this really IPv6-specific? If not I'd prefer a
>     > name that flags it as an AN infrastructure objective, e.g. "AN_Join"
> 
> okay.  The problem in 6tisch for proxy<->registrar communication (admission
> control) is the TCP stack required. 

Right. I've been assuming that a "BRSKI-COAP" method is available, and if
we use GRASP Flood, no TCP is needed at the pledge side.

   Brian