Re: [magma] One question on MLD

["K.Kawaguchi" <kawaguti at ysknet.co.jp>]

Hi,

You can find the sentence in RFC3810.

RFC3810
---
6.  Protocol Description for Multicast Address Listeners

   The link-scope all-nodes multicast address, (FF02::1), is handled as
   a special case.  On all nodes -- that is all hosts and routers,
   including multicast routers -- listening to packets destined to the
   all-nodes multicast address, from all sources, is permanently enabled
   on all interfaces on which multicast listening is supported.  No MLD
   messages are ever sent regarding neither the link-scope all-nodes
   multicast address, nor any multicast address of scope 0 (reserved) or
   1 (node-local).
---

IMHO, All nodes don't touch All-Nodes multicast address by MLD.
All nodes treat all multicast addresses except All-Nodes multicast
address.
MLDv2 routers are the listeners of Solicited-node multicast address,
All-Routers and All-MLDv2-capable multicast routers at least.


Best Regards
--
Kiyoaki Kawaguchi



"Indranil Bhattacharya <myselfindranil at gmail.com>" wrote:

> 
> 
> Hello,
> 
>         I have a question. Should a host/router send MLD reports for
> All-hosts, All-routers and solicited-node Multicast address? These
> groups are joined by Ipv6. In RFC 3376 I see the below paragraph:
> 
> Section 5: Description of the Protocol for Group Members
> ==========================================
> "The all-systems multicast address, 224.0.0.1, is handled as a
> special case.  On all systems -- that is all hosts and routers,
>   including multicast routers -- reception of packets destined to the
> all-systems multicast address, from all sources, is permanently
>   enabled on all interfaces on which multicast reception is supported.  No
> IGMP messages are ever sent regarding the all-systems
>   multicast address."
> 
> but in RFC 3810 I do not see anything mentioned. Could anyone answer this
> please?
> 
> Thanks,
> Indranil
> 
> 
> 
> 
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>