ARIN-PPML Message

[ppml] Policy Proposal 2005-9: 4-Byte AS Number - revised text

Dear Geoff;

Could you possibly send to the list a diff with the previous version ?

Regards
Marshall

On Feb 3, 2006, at 1:43 PM, Member Services wrote:

> Policy Proposal 2005-9: 4-Byte AS Number has been revised by the
> author. This proposal is open for discussion on this mailing list
> and will be on the agenda at the upcoming ARIN Public Policy
> Meeting.
>
> The current policy proposal text is provided below and is also  
> available
> at: http://www.arin.net/policy/proposals/2005_9.html
>
> Regards,
>
> Member Services
> American Registry for Internet Numbers (ARIN)
>
> ### * ###
>
> Policy Proposal 2005-9: 4-Byte AS Number
>
> Author: Geoff Huston
>
> Proposal Version: Revision 1 (February 3, 2006)
>
> Proposal type: modify
>
> Policy term: temporary
>
> Policy statement:
>
>       This policy proposal nominates 3 dates for changes to the  
> current
> AS Number allocation policy for the registry:
>
>       - Commencing 1 January 2007 the registry will process  
> applications
> that specifically request 32-bit only AS Numbers and allocate such AS
> numbers as requested by the applicant. In the absence of any specific
> request for a 32-bit only AS Number, a 16-bit only AS Number will be
> allocated by the registry.
>
>       - Commencing 1 January 2009 the registry will process  
> applications
> that specifically request 16-bit only AS Numbers and allocate such AS
> Numbers as requested by the applicant. In the absence of any specific
> request for a 16-bit only AS Number, a 32-bit only AS Number will be
> allocated by the registry.
>
>       - Commencing 1 January 2010 the registry will cease to make any
> distinction between 16-bit only AS Numbers and 32-bit only AS Numbers,
> and will operate AS number allocations from an undifferentiated 32-bit
> AS Number allocation pool.
>
>       Nomenclature
>
>       It is proposed to identify 32-bit AS Numbers using a syntax
> of "<high order 16 bit value in decimal>.<low order 16 bit value
> in decimal>". Accordingly, a 32-bit AS number of value 65546
> (decimal) would be identified as "1.10".
>
>       Terminology
>
>       "16-bit only AS Numbers" refers to AS numbers in the range 0  
> - 65535
>
>       "32-bit only AS Numbers" refers to AS Numbers in the range 1.0 -
> 65535.65535 (decimal range 65,536 - 4,294,967,295)
>
>       "32-bit AS Numbers" refers to AS Numbers in the range 0.0 -
> 65535.65535 (decimal range 0 - 4,294,967,295)
>
>
> Rationale:
>
>       Recent studies of AS number consumption rates indicate that the
> existing 16-bit pool of unallocated AS Numbers will be exhausted
> sometime in the period between 2010 and 2016, absent of any concerted
> efforts of recovery of already-allocated AS Numbers [1] [2].
> Standardization work in the IETF has produced a document that is
> currently being submitted as a Proposed Standard that will expand  
> the AS
> Number space to a 32-bit field [3].
>
>       It is noted that some advance period may be required by network
> operators to undertake the appropriate procedures relating to  
> support of
> 32-bit AS numbers, and while no flag day is required in the transition
> to the longer AS Number field, it is recognised that a prudent  
> course of
> action is to allow for allocation of these extended AS numbers well in
> advance of an anticipated 16-bit AS Number exhaustion date.
>
>       This policy proposal details a set of actions and associated  
> dates
> for RIR AS Number allocation policies to assist in an orderly  
> transition
> to use of the 32-bit AS Number space.
>
>       The essential attributes of this policy proposal are to  
> facilitate
> the ease of transitional arrangements by equipment vendors, network
> managers  and network operations staff, to provide the industry with
> some predictability in terms of dates and associated actions with
> respect to registry operational procedures for AS Number allocations.
>
>       References
>
>       [1] Daily AS Number Report, http://www.potaroo.net/tools/asns
>       [2] ASNs MIA: A Comparision of RIR Statistics and RIS Reality,
> http://www.nanog.org/mtg-0510/wilhelm.html
>       [3] BGP Support for Four-octet AS Number Space,
> draft-ietf-idr-as4bytes-12.txt
>
>
> Timetable for implementation: Procedures to support this proposal need
> to be implemented by 1 January 2007
>
>
>
>
>
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