Re: [Roll] MPL draft 2

"Jonathan Hui (johui)" <> Tue, 30 October 2012 17:21 UTC

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From: "Jonathan Hui (johui)" <>
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Thread-Topic: MPL draft 2
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Date: Tue, 30 Oct 2012 17:21:37 +0000
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Cc: richard kelsey <>, "" <>
Subject: Re: [Roll] MPL draft 2
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Hi Peter,

If I understand correctly, you would like to configure MPL multicast scope zones by having MPL forwarding interfaces subscribe to different IPv6 multicast addresses.  That is fine with me, but only works when using IPv6-in-IPv6 encapsulation.  If you want to limit the scope of MPL multicast packets that do not use IPv6-in-IPv6 encapsulation, we can't rely on the IPv6 Destination Address since that is set by the source of the original multicast packet.


Jonathan Hui

On Oct 22, 2012, at 6:53 AM, peter van der Stok <> wrote:

> Hi Jonathan and Richard,
> thanks for the new MPL draft. During a first reading I had some problems with the domain concept.
> I understood that a domain may be composed of several link-local scopes.
> When configuring an interface with one link-local scope I should like to reject link-local multicasts which come from link-local neigbors that do not belong to the domain for which the interface is configured. For example: closely spaced wireless nodes which have different edge routers. To express the domain in the multicast address were you thinking of "transient" and "unicast prefix based" mc addresses with format ff32::prefix:group?. Configuring the interface with a link-local scope limited to one prefix may cover the domain concept adequately.
> In my opinion some text on interface configuration to implement packet rejection based on Mc domain will be useful.
> Greetings
> Peter
> -- 
> Peter van der Stok
> mailto:
> www:
> tel NL: +31(0)492474673     F: +33(0)966015248