Re: One question on MLD

Hi Kiyoaki Kawaguchi,

                                Thanks for your response. Later I found out
that we have to send send MLD report for solicited-node multicast address
for the snooping switches to work. Otherwise those switches won't be able to
build state.

Thanks,
Indranil

On Wed, Jun 17, 2009 at 10:26 AM, K.Kawaguchi <[email protected]> wrote:

> 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 <[email protected]>" 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
> >
> >
> >
> >
> > _______________________________________________
> > magma mailing list
> > [email protected]
> > https://www.ietf.org/mailman/listinfo/magma
> >
> >
> >
> >
> >
>
>

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