Re: [Fwd: I-D Action: draft-carpenter-6man-why64-00.txt]

Le 06/01/2014 21:51, Mark ZZZ Smith a écrit :
> Hi,
>
> I've had a quick read through, I think this document would be quite
> useful.
>
> One thing I think would be good to capture is a bit of the
> history/rational behind the choice of 64 IID.
>
> I became aware of that history via Christian Huitema's "IPv6: The
> New Internet Protocol (2nd Edition)" book, I think it would be good
> if that history was a bit more widely available to explain and
> justify the choice.

Hi,

I dont have the book handy, but I would be interested to learn about how
this 64bit length came to life.  I remember some discussions of an 'h'
factor.

I suppose IEEE's EUI-64 design history is related, maybe because
triggered by same fear of address space depletion (48bit identifiers);
knowing that one may see how would an EUI-128 influence in any way IPv6
addressing.

Alex

>
> Regards, Mark.
>
>
> ----- Original Message -----
>> From: Brian E Carpenter <brian.e.carpenter@gmail.com> To: 6man
>> <ipv6@ietf.org> Cc: Sent: Monday, 6 January 2014 9:07 AM Subject:
>> [Fwd: I-D Action: draft-carpenter-6man-why64-00.txt]
>>
>> Hi,
>>
>> A group of us put this together following a discussion some weeks
>> ago on the v6ops list about the 64-bit boundary in IPv6 addresses.
>>  Discussion belongs in 6man, please.
>>
>> This draft is incomplete but we'd welcome input. Let me underline
>> an important comment in the introduction:
>>
>> _The purpose of this document is to analyse the issues around this
>>  question.  We make no proposal for change, but we do analyse the
>> possible effects of a change._
>>
>>
>> Brian + co-authors
>>
>> -------- Original Message -------- Subject: I-D Action:
>> draft-carpenter-6man-why64-00.txt Date: Sun, 05 Jan 2014 13:59:17
>> -0800 From: internet-drafts@ietf.org Reply-To:
>> internet-drafts@ietf.org To: i-d-announce@ietf.org
>>
>>
>> A New Internet-Draft is available from the on-line Internet-Drafts
>> directories.
>>
>>
>> Title           : Analysis of the 64-bit Boundary in IPv6
>> Addressing Authors         : Brian Carpenter Tim Chown Fernando
>> Gont Sheng Jiang Alexandru Petrescu Andrew Yourtchenko Filename :
>> draft-carpenter-6man-why64-00.txt Pages           : 14 Date :
>> 2014-01-05
>>
>> Abstract: The IPv6 unicast addressing format includes a separation
>> between the prefix used to route packets to a subnet and the
>> interface identifier used to specify a given interface connected
>> to that subnet. Historically the interface identifier has been
>> defined as 64 bits long, leaving 64 bits for the prefix.  This
>> document discusses the reasons for this fixed boundary and the
>> issues involved in treating it as a variable boundary.
>>
>>
>> The IETF datatracker status page for this draft is:
>> https://datatracker.ietf.org/doc/draft-carpenter-6man-why64/
>>
>> There's also a htmlized version available at:
>> http://tools.ietf.org/html/draft-carpenter-6man-why64-00
>>
>>
>>
>>
>>
>>
>>
>>
>>
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