[rbridge] IP Multicast groups/ layer 2 or layer 3?

[Russ White]

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It seems like since we're really focusing on l2, we should just
advertise l2 addresses.

:-)

Russ

Radia Perlman wrote:
> When an RBridge  R announces via IS-IS which IP multicast groups are  
> reachable on R's directly
> attached links, should the groups be layer 3 or layer 2 addresses?
> 
> If it's layer 3, then there will have to be separate announcements for 
> IPv4 and IPv6 groups.
> If it's layer 2, then 32 IPv4 groups would map to the same layer 2 
> multicast address (and I'm
> not sure what it is for IPv6).
> 
> I don't care. The spec currently says layer 2, but there is a question 
> in the spec asking if that's what
> we really want.
> 
> Radia
> 
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> rbridge at postel.org
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