Re: ipv6 multicast address

The IANA assignments are done when the draft is published as an RFC.

John is right. The IANA will assign the address suggested in the draft.

Regards
Mukesh

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of
John Cruz (johcruz)
Sent: Wednesday, August 20, 2008 9:40 PM
To: [email protected]
Cc: [email protected]
Subject: Re: [VRRP] ipv6 multicast address

Hi,

According to RFC 3307, a reserved multicast address should be of the
format FF02::<GROUPID-32bits>. This is what is indicated in the VRRP
draft. The Xs don't refer to a block.

Moreover, this statement is under the "IANA Considerations". It is for
IANA to assign this address. To the best of my knowledge, this will be
the
address assigned by IANA. But I don't know when it will be assigned
though.

Hope this helps.
John

> -----Original Message-----
> From: [email protected] [mailto:[email protected]]
> Sent: Wednesday, August 20, 2008 8:25 PM
> To: John Cruz (johcruz)
> Cc: [email protected]
> Subject: Re: [VRRP] ipv6 multicast address
> 
> John Cruz (johcruz) wrote:
> > Please see Section 13. The address to be used is FF02::12.
> 
> Thanks John. But this is only a "convenient assignment". Although I
> guess most implementation will just use ff02::12 for sending, it's
> possible that someone will send to ff02::13 or sth else.
> 
> So why a block of addresses (not a single address instead) was
assigned
> for VRRP in the first place?
> 
> >
> > John
> >
> > 13.  IANA Considerations
> >
> >    VRRP for IPv6 needs an IPv6 link-local scope multicast address
> >    assigned by the IANA for this specification.  The IPv6 multicast
> >    address should be of the following form:
> >
> >       FF02:0:0:0:0:0:XXXX:XXXX
> >
> >    The values assigned address should be entered into section
> 5.1.2.2.
> >
> >    A convenient assignment of this link-local scope multicast would
> be:
> >       FF02:0:0:0:0:0:0:12
> >
> >
> >
> >> -----Original Message-----
> >> From: [email protected] [mailto:[email protected]] On
Behalf
> > Of
> >> Huafeng Lu
> >> Sent: Wednesday, August 20, 2008 2:26 AM
> >> To: [email protected]
> >> Subject: [VRRP] ipv6 multicast address
> >>
> >>
> >> Hi,
> >>
> >> The following is stated in the draft:
> >>
> >> 5.1.2.2.  Destination Address
> >>
> >>    The IPv6 multicast address as assigned by the IANA for VRRP is:
> >>
> >>    FF02:0:0:0:0:0:XXXX:XXXX
> >>
> >>    This is a link-local scope multicast address.  Routers MUST NOT
> >>    forward a datagram with this destination address regardless of
> its
> >>    Hop Limit.
> >>
> >>
> >>
> >> So the address is not fixed? A master virtual router can send adv
to
> >> any
> >> addr in this range, and a backup virtual router has to join all
> >> multicast groups within this range? This doesn't sounds quite clear
> to
> >> me.
> >>
> >> Can someone explain a bit to me? Thanks.
> >> --
> >> Huafeng
> >> _______________________________________________
> >> vrrp mailing list
> >> [email protected]
> >> https://www.ietf.org/mailman/listinfo/vrrp

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