Re: Mobility Exposure and Selection WT call

Le 13/02/2015 09:09, Alper Yegin a écrit :
> Hello Alex,
>
>> I looked at the slides.  I think I understand the concept of type
>> of IP address from a mobility perspective: fixed, sustained,
>> nomadic.
>>
>> I have remarks: - could an aquired prefix (DHCPv6 PD) also be
>> qualified as fixed, sustained, nomadic?
>
> Yes.
>
>> - how would a mobility address type relate to other address
>> 'types'? - link-local, ULA, global.
>
> Link-local can only be nomadic. Global can be any type. We cannot
> assure a ULA address stays the same (considering border crossings),
> hence it can only be nomadic.
>
>
>> - unicast, anycast, multicast.
>
> This is source address selection, hence multicast address is out-of
> picture. Unicast vs anycast distinction is orthogonal to mobility
> type of the address.
>
>> - MAC-based, random-based (RFC7217).
>
> Orthogonal.

?  One wouldn't want her 'fixed' address (not the 'sustained', not
the 'nomadic') be a random-based address RFC7217.  That RFC's abstract says:
> This document specifies a method for generating IPv6 Interface
> Identifiers to be used with IPv6 Stateless Address Autoconfiguration
> (SLAAC), such that an IPv6 address configured using this method is
> stable within each subnet, but the corresponding Interface
> Identifier changes when the host moves from one network to another.


>> - configured by SLAAC, by DHCPv6, by PPP, or registered (RFC
>> 6775).
>>
>
> Orthogonal.
>
>
>> E.g. a nomadic address could never be a link-local address.
>>
>>> #2. Describe how IP address type information is conveyed from
>>> network to MN.
>>
>> If one designs a protocol to convey address type information from
>> the network to the end node, then one could also add the other
>> types mentioned above.
>>
>> SLAAC could never 'convey' the address type to the end-node,
>> because SLAAC is an operation happening with as heavy weight from
>> the Server (router) as from the Client (Host): the Router decides
>> the prefix but the Client decides the Interface ID.
>>
>
> Still, the network can convey the type of IP address to the host.
> Also, one can imagine augmenting Router Solicitation to let the host
> convey its requested type.

I agree.

Alex


>> Address Registration Option of 6lo and BTLE would have the Host
>> conveying this information to the Router (and not vice-versa).
>>
>
> OK.
>
> Alper
>
>
>> Yours,
>>
>> Alex
>>
>>> WT agreed to use draft-yegin-dmm-ondemand-mobility as the
>>> baseline for item#1 (the API). A revision of the draft will also
>>> include a new section to cover backward compatibility (Danny will
>>> provide the draft text). Comments on the draft are welcome.
>>>
>>> The next call will be about items #2/#3 (IP address
>>> configuration enhancements associated with the API). We intend to
>>> schedule that one in about 2 weeks.
>>>
>>> Alper
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Feb 9, 2015, at 9:59 AM, Alper Yegin wrote:
>>>
>>>> Folks,
>>>>
>>>> See below for the Webex details. Remember, the call is on Tue,
>>>> Feb 10, at 4pm CET. And don't forget to read the documents in
>>>> the reading list prior to the call.
>>>>
>>>>> Attendees _shall read _the following material before the call
>>>>> so that we can directly jump to the discussions:
>>>>>
>>>>> 1.
>>>>> http://www.ietf.org/proceedings/91/slides/slides-91-dmm-4.pdf
>>>>>
>>>>>
2. http://www.ietf.org/proceedings/90/slides/slides-90-dmm-6.pdf
>>>>> 3.
>>>>> https://datatracker.ietf.org/doc/draft-yegin-dmm-ondemand-mobility/
>>>>>
>>>>>
4. http://www.ietf.org/proceedings/88/slides/slides-88-dmm-8.pdf
>>>>> 5. http://tools.ietf.org/html/draft-liu-dmm-mobility-api-02
>>>>
>>>>
>>>>
>>>> Alper
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> *DMM - Mobility Exposure and Selection WT* Tuesday 10 February
>>>> 2015 16:00  |  Europe Time (Paris, GMT+01:00)  |  1 hr 30 min
>>>>
>>>>> *Join WebEx meeting*
>>>>> <https://ietf.webex.com/ietf/j.php?MTID=m1dad9871a277ff2ab142ae8ff4b77ad3>
>>>>>
>>>>>
>>>>>
Meeting number:	641 085 326
>>>>> Meeting password:	dmm1911
>>>>>
>>>>> *Join by phone* *1-877-668-4493* Call-in toll free number
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>>>>>
>>>>> Add this meeting
>>>>> <https://ietf.webex.com/ietf/j.php?MTID=m0855d524ccb7239248d0ce34e19f38c8>
>>>>> to your calendar.
>>>>>
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>>>>>
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>>>> <WebEx_Meeting.ics>
>>>>
>>>>
>>>> On Jan 27, 2015, at 11:12 AM, Alper Yegin wrote:
>>>>
>>>>> Poll is closed, and majority selected the following date for
>>>>> the call:
>>>>>
>>>>> Feb 10, 4pm CET. 1,5hr call.
>>>>>
>>>>> Please mark your calendars.
>>>>>
>>>>> In this call, we'll aim making progress on the I-D for item#1
>>>>> (an API for source address selection).
>>>>>
>>>>> Attendees _shall read _the following material before the call
>>>>> so that we can directly jump to the discussions:
>>>>>
>>>>> 1.
>>>>> http://www.ietf.org/proceedings/91/slides/slides-91-dmm-4.pdf
>>>>>
>>>>>
2. http://www.ietf.org/proceedings/90/slides/slides-90-dmm-6.pdf
>>>>> 3.
>>>>> https://datatracker.ietf.org/doc/draft-yegin-dmm-ondemand-mobility/
>>>>>
>>>>>
4. http://www.ietf.org/proceedings/88/slides/slides-88-dmm-8.pdf
>>>>> 5. http://tools.ietf.org/html/draft-liu-dmm-mobility-api-02
>>>>>
>>>>>
>>>>> Alper
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Jan 23, 2015, at 3:28 PM, Alper Yegin wrote:
>>>>>
>>>>>> Folks,
>>>>>>
>>>>>> Please mark your availability on the following doodle for
>>>>>> our next DMM WG Mobility Exposure and Selection WT call:
>>>>>>
>>>>>> http://doodle.com/7xgcr8x6cgxnbzur
>>>>>>
>>>>>> Register your availability no later than the end of Monday
>>>>>> (Jan 26).
>>>>>>
>>>>>> Alper
>>>>>>
>>>>>
>>>>
>>>
>>>
>>>
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>>>
>>
>>
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>
>
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