Dino,

On 3/24/13 8:52 PM, Dino Farinacci wrote:

And also, link-local multicast groups are not explicitly joined.

The above is not necessarily true. The MLD specifications state that a Report is sent for all multicast addresses except:

- link-local all-nodes multicast address
- multicast addresses with scopes 0 or 1

I have seen numerous packet traces where nodes have sent MLD Report messages for their solicited-node multicast addresses. This is all done to facilitate the use of snooping switches.

Regards,
Brian


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