On Nov 17, 2009, at 16:08, Alexandru Petrescu wrote:

> Is it efficient for the Edge Router to send a myriad of Neighbor
> Advertisement messages (which are addressed to a link-layer multicast
> address, and a L3 multicast address) on the backbone?

Well, we try to be fully 4861-compliant on the backbone.
The backbone is supposed to be an Ethernet or a similar high-capacity link, so 
it should have little problem with that load.

> Why cluttering the backbone?

Because that's what 4861 does to you? :-)

Of course, the ERs could speak a different protocol between themselves, but the 
idea was to enable other nodes to live on the backbone link and communicate 
with the 6lowpan nodes without requiring any 6lowpan-specific code.  Those 
other nodes will speak 4861 only.

Gruesse, Carsten

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