Re: [multimob] MLD HLD Message

[<[e-mail]>]

Hi,

Just to clarify: actually DSMIP is only proposed for inter-system mobility between WLAN and 3GPP accesses.

Pierrick

> -----Message d'origine-----
> De : [e-mail] [mailto:[e-mail]] De la
> part de Desire Oulai
> Envoyé : vendredi 16 mai 2008 15:40
> À : [e-mail]
> Objet : Re: [multimob] MLD HLD Message
> 
> Hi Alvaro,
> 
>  Just to clarify that 3GPP also uses DSMIP6 which is a "MIPv6 with IPv4
> support". I agree that it is better to focus first on solutions for
> MIPv6 and PMIPv6. These solutions could be extended later.
> 
> Best Regards
> 
> Desire
> 
> > -----Original Message-----
> > From: [e-mail]
> > [mailto:[e-mail]] On Behalf Of
> > [e-mail]
> > Sent: May 16, 2008 9:08 AM
> > To: [e-mail]
> > Subject: multimob Digest, Vol 13, Issue 4
> >
> > Hi,
> >
> > Just some comments: I read the draft about multicast and
> > HMIPv6 and I have a doubt about if HMIPv6 is a succcesful
> > technology or not.
> >
> > I am not a Mobile IP expert, but from what I know:
> >
> > 1. 3GPP2 (USA) uses Mobile IP but not HMIPv6 2. 3GPP (Europe)
> > uses something similar to Proxy Mobile IP draft and still
> > doesn't support Mobile IP 3. IMS (IP Multimedia Subsytem) is
> > expecting the Proxy Mobile IPv6 draft to reach RFC status.
> > This technology is considered "critical" for IMS. IMS is
> > based on IPv6 but I think it still doesn't support Mobile IP
> > ( I am not sure about this) Both 3GPP and 3GPP2 are going to
> > implement IMS
> >
> > Of course, Mobile IP can be used not only in Mobile Phones.
> > It can be used with WIFI, Wimax or other wireless
> > technologies. But I think it's better one solution for
> > muticast Mobile IP that could be also used with 3GPP, 3GPP2 and IMS.
> >
> > So, my doubts are
> >
> > is HMIPv6 a successful technology?
> > is it really being implemented by ISP?
> >
> > Best regards
> >
> > Alvaro
> >
> >
> > ________________________________
> >
> > De: [e-mail] en nombre de Hitoshi Asaeda
> > Enviado el: jue 15/05/2008 19:16
> > Para: [e-mail]; [e-mail]
> > CC: [e-mail]
> > Asunto: Re: [multimob] MLD HLD Message
> >
> >
> >
> > >   We had a discussion on where MLD/IGMP Hold message needs to be
> > > specified. There are two options: either it is specified in
> > MLD/IGMP
> > > Mobile draft or in individual protocol extension draft(s) for
> > > HMIP/MIP, etc.
> > >
> > >   Please post your opinions.
> >
> > Maybe I should clarify.
> >
> > I sent a mail to the multimob ML on Apr.14.
> >
> > Thomas proposed MLD hold message in;
> > http://tools.ietf.org/html/draft-schmidt-waehlisch-mhmipv6
> >
> > It assumes the use of MLD hold message with HMIP6.
> > On the other hand, MLD hold message might be useful for fast
> > handover scenario in general, because MLD hold asks to the
> > upstream mrouter or proxy (i.e. MAPs or HA) to keep join
> > state during MN's movement and recover the multicast session
> > after MN's movement.
> >
> > On the other hand, one may think that MLD hold state is not
> > mandatory as the general MLD extension, because the fast
> > handover would be much faster than the time of membership
> > expiration maintained by MLD. This means even if MN does not
> > send any MLD message to his upstream router or proxy, he can
> > recover the multicast session quickly since he can move to
> > the new mobile network very fast (i.e. faster than MLD
> > expiration time).
> > I don't know if it's always true or not.
> >
> > So now, I'd like to hear your opinions.
> > If MLD hold is useful especially (or only) for HMIP, then MLD
> > hold specification would be kept in the above HMIP draft.
> > If it is useful to propose it as the MLD extension as the
> > general function, I'm happy to work for defining the
> > specification in the MLD extension draft with Thomas.
> >
> > Thank you for your input.
> > --
> > Hitoshi Asaeda
> > _______________________________________________
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