Subject: IPv6 in multicast VPLS reqts

From: "Yuji KAMITE" <[email-masked]>
Date: Fri, 19 Aug 2005 15:55:32 +0900

Hi all,

In Paris, there was a comment on IPv6 support
for multicast VPLS requirement.

> (Minutes of the last meeting)
>   - Bernard Tuy: Need to ensure IPv6 support and multicast
>     auto-discovery and reporting of membership.

In my view, current requirement document already covers
necessity minimum set in terms of IPv6 support too, because:

- MLD is already mentioned as a CE-PE protocol.
    As shown in 5.1.2, if you are using IPv6, MLD SHOULD be supported
    if a solution consults Layer-3 information.

- MLD can be snooped in a similar way to IGMP.
    - Section 4.1 states that Layer-3 multicast control packets
      (e.g.  PIM, IGMP) MAY be flooded only to relevant members,
      with control of limiting flooding scope.
      This part is also applicable to MLD.
    - Also, [draft-ietf-magma-snoop-12.txt] says, 
      the basic functionality of intercepting MLD packets, and building
      membership lists and multicast router lists, is the same as for IGMP. 
      In the next revision I'm going to refer to this draft too. 
       
- NDP uses multicast forwarding, but this kind of packet is just flooded.  
   - Section 4.1 says that Layer-3 control packets (e.g., OSPF, ISIS)
     other than multicast routing SHOULD be flooded to all PE/
     CEs in a VPLS instance.  
     This part also includes IPv6 relevant cases.
       
Your feedback is welcome.

Regards,
-Yuji