Re: [Roll] [roll] #110: trickle-mcast: do applications receive all multicast, or just MPL encapsulated ones

"Jonathan Hui (johui)" <johui@cisco.com> Thu, 01 November 2012 16:08 UTC

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From: "Jonathan Hui (johui)" <johui@cisco.com>
To: "<roll@ietf.org>" <roll@ietf.org>
Thread-Topic: [roll] #110: trickle-mcast: do applications receive all multicast, or just MPL encapsulated ones
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Date: Thu, 1 Nov 2012 16:08:42 +0000
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Cc: "<draft-ietf-roll-trickle-mcast@tools.ietf.org>" <draft-ietf-roll-trickle-mcast@tools.ietf.org>, "<mcr@sandelman.ca>" <mcr@sandelman.ca>
Subject: Re: [Roll] [roll] #110: trickle-mcast: do applications receive all multicast, or just MPL encapsulated ones
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The FF0X::MPL multicast address serves to identify a group of MPL forwarders within an MPL domain.

I think if any device sends a packet to FF0X::MPL, it should be delivered to and processed by all devices subscribed to that address.

Thoughts from others?

--
Jonathan Hui

On Nov 1, 2012, at 7:47 AM, roll issue tracker <trac+roll@trac.tools.ietf.org>; wrote:

> #110: trickle-mcast: do applications receive all multicast, or just MPL
> encapsulated ones
> 
> There's still the case that multicasts from non-MPL nodes are received by
> MPL-forwarder-nodes
> (presumably). Should there be guidelines here? Example: if an application
> on my MPL-forwarder node
> joins multicast group FF05::1234, will the application then receive IP
> multicasts sent
> with destination FF05::1234, or will it only receive those IP multicasts
> to FF05::1234
> that were delivered encapsulated in an FF0X::MPL packet ?
> 
> That decision could be out of scope; but on the other hand may lead to
> different
> implementers making different choices here.
> 
> -- 
> -----------------------------+---------------------------------------------
> Reporter:  mcr@…            |      Owner:  draft-ietf-roll-trickle-mcast@…
>     Type:  enhancement      |     Status:  new
> Priority:  major            |  Milestone:
> Component:  trickle-mcast    |    Version:
> Severity:  In WG Last Call  |   Keywords:
> -----------------------------+---------------------------------------------
> 
> Ticket URL: <https://svn.tools.ietf.org/wg/roll/trac/ticket/110>
> roll <http://tools.ietf.org/wg/roll/>
>