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Re: [Roll] [roll] #132: draft-ietf-roll-trickle-mcast-04 - Clarify scope value of 3 - subnet-local

Don Sturek <d.sturek@att.net> Tue, 15 October 2013 14:22 UTC

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Date: Tue, 15 Oct 2013 07:20:01 -0700
From: Don Sturek <d.sturek@att.net>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Message-ID: <CE829C81.2431C%d.sturek@att.net>
Thread-Topic: [Roll] [roll] #132: draft-ietf-roll-trickle-mcast-04 - Clarify scope value of 3 - subnet-local
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Cc: mariainesrobles@gmail.com, johui@cisco.com, rdroms@cisco.com
Subject: Re: [Roll] [roll] #132: draft-ietf-roll-trickle-mcast-04 - Clarify scope value of 3 - subnet-local
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HI Michael,

At some point, I think it would be interesting to see multicast forwarding
rules in a mesh network where flooding is not used.  I would see that case
as the example of where scope 4 would be used.

I know that a lot of work is needed in defining the rules for forwarding
when flooding is not used but in a large mesh network, there would be a
lot of benefit to such a feature.

Don



On 10/15/13 7:11 AM, "Michael Richardson" <mcr+ietf@sandelman.ca> wrote:

>
>
>roll issue tracker <trac+roll@trac.tools.ietf.org> wrote:
>    >  An MPL Forwarder MAY participate in an MPL Domain where the MPL
>Domain
>    > Address uses a scope value of 4 (Admin-Local)
>
>Why do we need/want scope value 4 at all?
>
>I don't agree with using the PAN ID as the automatically configured
>criteria.  I think that subnet is the right thing.  RPL and MPL
>is specifically designed to cross layer-2.
>
>--
>Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
>_______________________________________________
>Roll mailing list
>Roll@ietf.org
>https://www.ietf.org/mailman/listinfo/roll

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