Re: [multimob] Fast Handover Solutions

"Rajeev Koodli (rkoodli)" <rkoodli@cisco.com> Tue, 27 November 2012 19:23 UTC

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From: "Rajeev Koodli (rkoodli)" <rkoodli@cisco.com>
To: Stig Venaas <stig@venaas.com>
Thread-Topic: [multimob] Fast Handover Solutions
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Date: Tue, 27 Nov 2012 19:23:05 +0000
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Cc: "multimob@ietf.org" <multimob@ietf.org>, "Thomas C. Schmidt" <schmidt@informatik.haw-hamburg.de>
Subject: Re: [multimob] Fast Handover Solutions
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Hi Stig,


On 11/27/12 10:53 AM, "Stig Venaas" <stig@venaas.com> wrote:

>On 11/27/2012 10:19 AM, Rajeev Koodli (rkoodli) wrote:
>>
>> Thanks for checking.
>>
>> To avoid the confusion, kindly rename the draft appropriately.
>> The draft title and the draft name should be consistent, and not
>>mislead,
>> as it does now.
>
>It's a bit misleading, but the name does not matter much. The RFC won't
>have the draft name mentioned anywhere.

IMHO, that's not a reason to be sloppy and misleading.
You didn't say what's the issue with using the appropriate draft name?


>
>Can't we rather discuss how the two real fast handover drafts meet
>the requirements?

I admit I am not on this alias much.

I don't understand what is considered "fast handover" here.
Based on what I have read, it's supposed to be a closed issue, and the WG
is moving on with the WG ID that is called "*-fast-handover-*".
And, I have an issue with this misleading naming suggested/adopted by the
chairs.
Please fix the name.

That's it! :-)

-Rajeev




>
>Stig
>
>>
>> -Rajeev
>>
>>
>> On 11/27/12 9:24 AM, "Behcet Sarikaya" <sarikaya2012@gmail.com> wrote:
>>
>>> Hi Rajeev,
>>>
>>> I checked again.
>>> The charter item is about PMIPv6 handover optimizations, not on fast
>>> handover.
>>>
>>> The draft name should have been handover-optimizations not
>>>fast-handover.
>>>
>>> Sorry about that because I had suggested this draft name.
>>>
>>> Without realizing that it would cause so much trouble.
>>>
>>> I repeat here again, the draft title did not change and the draft
>>> content is reflected in the title. This is the most important thing.
>>>
>>>
>>> Regards,
>>>
>>> Behcet
>>>
>>> On Mon, Nov 26, 2012 at 6:07 PM, Rajeev Koodli (rkoodli)
>>> <rkoodli@cisco.com> wrote:
>>>>
>>>>
>>>> Hi Behcet,
>>>>
>>>> On 11/26/12 1:46 PM, "Behcet Sarikaya" <sarikaya2012@gmail.com> wrote:
>>>>
>>>>> On Mon, Nov 19, 2012 at 6:27 PM, Thomas C. Schmidt
>>>>> <schmidt@informatik.haw-hamburg.de> wrote:
>>>>>> Hi Behcet,
>>>>>>
>>>>>> these requirements are for a fast handover solution, i.e., a
>>>>>>protocol
>>>>>> that
>>>>>> operates a *handover* in a *fast* manner.
>>>>>>
>>>>>> I agree that draft-ietf-multimob-fast-handover does not meet the
>>>>>> requirements, but had written earlier on the list that the name of
>>>>>> this
>>>>>> draft is misleading in two ways: (i)
>>>>>>draft-ietf-multimob-fast-handover
>>>>>> is
>>>>>> not a fast handover solution, and (ii) the name "fast handover" is
>>>>>> tied
>>>>>> to
>>>>>> RFC5568/RFC5949-like schemes for good reasons.
>>>>>>
>>>>>
>>>>> The draft title contains ... handover optimization ... and it
>>>>>reflects
>>>>> its content.
>>>>> We asked for this WG draft name because of the charter item to which
>>>>> it corresponds.
>>>>
>>>> Sorry, which charter item has "fast-handover"?
>>>> Could you clarify?
>>>>
>>>> Thanks.
>>>>
>>>> -Rajeev
>>>>
>>>>
>>>>
>>>>>
>>>>> I think this clarifies your confusion.
>>>>>
>>>>> Regards,
>>>>>
>>>>> Behcet
>>>>>
>>>>>> Cheers,
>>>>>>
>>>>>> Thomas
>>>>>>
>>>>>>
>>>>>> On 20.11.2012 00:09, Behcet Sarikaya wrote:
>>>>>>>
>>>>>>> Hi Thomas,
>>>>>>>
>>>>>>> It seems that these requirements are for
>>>>>>>
>>>>>>> draft-schmidt-multimob-fmipv6-pfmipv6-multicast
>>>>>>>
>>>>>>> and not for
>>>>>>> draft-ietf-multimob-fast-handover.
>>>>>>>
>>>>>>> What do you think?
>>>>>>>
>>>>>>> Regards,
>>>>>>>
>>>>>>> Behcet
>>>>>>>
>>>>>>> On Mon, Nov 12, 2012 at 4:28 PM, Thomas C. Schmidt
>>>>>>> <schmidt@informatik.haw-hamburg.de> wrote:
>>>>>>>>
>>>>>>>> Hi all,
>>>>>>>>
>>>>>>>> after the - somewhat uninformed discussion at IETF85 - chairs
>>>>>>>>asked
>>>>>>>> me to
>>>>>>>> restate requirements of a "fast handover solution" for Multicast
>>>>>>>> Mobility.
>>>>>>>>
>>>>>>>> Here they are:
>>>>>>>>
>>>>>>>>    (i) Handover should be fast (this is only true for a direct
>>>>>>>> pMAG/AR
>>>>>>>> to
>>>>>>>> nMAG/AR solution such as
>>>>>>>>
>>>>>>>>
>>>>>>>> 
>>>>>>>>http://tools.ietf.org/html/draft-schmidt-multimob-fmipv6-pfmipv6-mu
>>>>>>>>lt
>>>>>>>> ic
>>>>>>>> ast).
>>>>>>>>
>>>>>>>>    (ii) Multicast handover should be fully synchronized with
>>>>>>>>unicast
>>>>>>>> handover
>>>>>>>> (otherwise unicast and multicast states diverge as is a well-known
>>>>>>>> issue
>>>>>>>> for
>>>>>>>> the RAMS-approach, i.e.,
>>>>>>>> https://tools.ietf.org/html/draft-ietf-multimob-fast-handover).
>>>>>>>>
>>>>>>>>    (iii) Multicast handover solutions should tightly integrate
>>>>>>>>with
>>>>>>>> unicast
>>>>>>>> handover (only
>>>>>>>>
>>>>>>>>
>>>>>>>> 
>>>>>>>>http://tools.ietf.org/html/draft-schmidt-multimob-fmipv6-pfmipv6-mu
>>>>>>>>lt
>>>>>>>> ic
>>>>>>>> ast
>>>>>>>> integrates with PFMIPv6 and FMIPv6).
>>>>>>>>
>>>>>>>>    (iv) Handover management should reuse standard mobility and
>>>>>>>> multicast
>>>>>>>> protocol operations for easy implementation and deployment
>>>>>>>>
>>>>>>>>
>>>>>>>> 
>>>>>>>>(http://tools.ietf.org/html/draft-schmidt-multimob-fmipv6-pfmipv6-m
>>>>>>>>ul
>>>>>>>> ti
>>>>>>>> cast
>>>>>>>> introduced the use of standard IGMP/MLD records for context
>>>>>>>> description
>>>>>>>> in
>>>>>>>> transfer, which has been copied several times).
>>>>>>>>
>>>>>>>>    (v) Multicast handover management should integrate ASM and
>>>>>>>>SSM, as
>>>>>>>> well
>>>>>>>> as
>>>>>>>> IPv4 (IGMP) and IPv6 (MLD), which is only provided by
>>>>>>>>
>>>>>>>>
>>>>>>>> 
>>>>>>>>http://tools.ietf.org/html/draft-schmidt-multimob-fmipv6-pfmipv6-mu
>>>>>>>>lt
>>>>>>>> ic
>>>>>>>> ast.
>>>>>>>>
>>>>>>>> Based on these facts, chairs and AD proclaimed to re-decide on
>>>>>>>> future
>>>>>>>> paths
>>>>>>>> for Multimob fast handover solutions.
>>>>>>>>
>>>>>>>> Cheers,
>>>>>>>>
>>>>>>>> Thomas
>>>>>>>> --
>>>>>>>>
>>>>>>>> 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:
>>>>>>>> +49-40-42875-8452
>>>>>>>> °
>>>>>>>> ° http://www.informatik.haw-hamburg.de/~schmidt    Fax:
>>>>>>>> +49-40-42875-8409
>>>>>>>> °
>>>>>>>> _______________________________________________
>>>>>>>> multimob mailing list
>>>>>>>> multimob@ietf.org
>>>>>>>> https://www.ietf.org/mailman/listinfo/multimob
>>>>>>
>>>>>>
>>>>>> --
>>>>>>
>>>>>> 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:
>>>>>> +49-40-42875-8452 °
>>>>>> ° http://www.informatik.haw-hamburg.de/~schmidt    Fax:
>>>>>> +49-40-42875-8409 °
>>>>> _______________________________________________
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>>
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