Re: [multimob] [Fwd: New Version Notification fordraft-schmidt-multimob-fmipv6-pfmipv6-multicast-01]

[Frank Xia <[e-mail]>]

Hi Thomas

Just I told you in another email, we had a draft
http://tools.ietf.org/id/draft-xia-mipshop-fmip-multicast-01.txt
which was presented at IETF 66, and Multimob BarBoF.

I was going to update the draft adopting the following principles:

1)Unifying multicast FMIP and PFMIP handover procedure, that is 
 FBU/FBack messages won't be touched. I would like to  view 
 multicast mobility is an application of unicast mobility. When
 a mobile node moves, it is also assumed that corresponding 
 multicast traffic should be handovered to NAR.

2)MLD query is used to collect multicast context, which is 
applicable not only to FMIP but also PFMIP. HI/HACK are
used for context transferring between PAR(PMAG)/NAR(NMAG)

3)Extending MLD/IGMP for Specific MLD Query. You use general MLD
 Query which is fine when point-to-point link model adopted,
 and PMIP "currently" is only for point-to-point link, but FMIP
 is for both shared-link and point-to-point link.

BR
Frank

-----Original Message-----
From: [e-mail] [mailto:[e-mail]] On Behalf
Of Thomas C. Schmidt
Sent: Friday, March 12, 2010 3:41 AM
To: Min Hui
Cc: [e-mail]
Subject: Re: [multimob] [Fwd: New Version Notification
fordraft-schmidt-multimob-fmipv6-pfmipv6-multicast-01]

Hi Hui,

Min Hui wrote:

> I have a draft to solve this multicast fast handover issue which was
> proposed last year, and we have discussed this draft by mail before
> last IETF meeting.
> See my draft by the link:
> http://tools.ietf.org/id/draft-hui-multimob-fast-handover-00.txt
> The draft was on the Multimob agenda in the last IETF meeting, but
> wasn't presented due to the lack of time.
>

Of course I know. In Hiroshima, we had a quick discussion with Hui Deng 
and Rajeev about the subject and the work we had already been doing on this.

> I have a quick look about your new draft, it seems our drafts are
> quite similar. We both extend the HI/HACK message to support multicast
> context transfer, and setup the tunnel between pMAG and nMAG to ensure
> multicast fast handover.
> 

As mentioned in the Acknowledgements Section (and also in the problem 
statement), there has actually been a long history of proposals, papers 
& drafts on this issue, the first draft was 
draft-suh-mipshop-fmcast-mip6-00 already in July 2004. They are all 
similar on this very abstract level that context is transfered via 
HI/HACK messages. However, none of the proposals I have seen have really 
tried to work out the problem in sufficient detail. (Even though we have 
not completed the protocol details section, you already see from 
comparisons that there are quite a number of issues such an 
M-FMIPv6/M-PFMIPv6 protocol must resolve that haven't been addressed 
before).

So from this abstract point of view, not much had happened since 2004, 
why I was hesitant to present a longer list of references ...

... but the latter we might change.

Best wishes,

Thomas


> 
> 
> 2010/3/5 Thomas C. Schmidt <[e-mail]>:
>> Hi all,
>>
>> following the focus of Dirk, we submitted a new draft on FMIPv6/PFMIPv6
>> multicast extensions.
>>
>> This work was actually initiated back in the last meeting of MobOpts and
>> delayed due to the initial PMIP focus of Multimob.
>>
>> Looking forward to your comments and to progressing the discussion!
>>
>> Best regards,
>>
>> Thomas
>>
>> -------- Original Message --------
>> Subject: New Version Notification for
>> draft-schmidt-multimob-fmipv6-pfmipv6-multicast-01
>> Date: Fri,  5 Mar 2010 07:08:30 -0800 (PST)
>> From: IETF I-D Submission Tool <[e-mail]>
>> To: [e-mail]
>> CC: [e-mail],[e-mail],[e-mail]
>>
>>
>> A new version of I-D,
draft-schmidt-multimob-fmipv6-pfmipv6-multicast-01.txt
>> has been successfuly submitted by Thomas Schmidt and posted to the IETF
>> repository.
>>
>> Filename:        draft-schmidt-multimob-fmipv6-pfmipv6-multicast
>> Revision:        01
>> Title:           Multicast Listener Extensions for MIPv6 and PMIPv6 Fast
>> Handovers
>> Creation_date:   2010-03-06
>> WG ID:           Independent Submission
>> Number_of_pages: 21
>>
>> Abstract:
>> Fast handover protocols for MIPv6 and PMIPv6 define mobility
>> management procedures that support unicast communication at reduced
>> handover latencies.  Fast handover base operations do not affect
>> multicast communication, and hence do not accelerate handover
>> management for native multicast listeners.  Many multicast
>> applications like IPTV or conferencing, though, are comprised of
>> delay-sensitive real-time traffic and could strongly benefit from
>> fast handover execution.  This document specifies extension of the
>> Mobile IPv6 Fast Handovers (FMIPv6) and the Fast Handovers for Proxy
>> Mobile IPv6 (PFMIPv6) protocols to include multicast traffic
>> management in fast handover operations.
>>
>>
>>
>>
>> The IETF Secretariat.
>>
>>
>>
>> --
>>
>> Prof. Dr. Thomas C. Schmidt
>> ° Hamburg University of Applied Sciences                   Berliner Tor 7
°
>> ° Dept. Informatik, Internet Technologies Group    20099 Hamburg, Germany
°
>> ° http://www.haw-hamburg.de/inet                   Fon: [phone]
°
>> ° http://www.informatik.haw-hamburg.de/~schmidt    Fax: [phone]
°
>> _______________________________________________
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-- 

Prof. Dr. Thomas C. Schmidt
° Hamburg University of Applied Sciences                   Berliner Tor 7 °
° Dept. Informatik, Internet Technologies Group    20099 Hamburg, Germany °
° http://www.haw-hamburg.de/inet                   Fon: [phone] °
° http://www.informatik.haw-hamburg.de/~schmidt    Fax: [phone] °
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