[arin-ppml] Policy Proposal: Equitable Distribution of IPv4 Resources before IPv4 Run out

Michael K. Smith - Adhost mksmith at adhost.com
Wed May 21 19:26:19 EDT 2008


Hello Scott:

I'm working on a basis assumption that Extra Large organizations request more addresses more frequently than any of the other groups.  So, if allocations proceed organically with the last IANA allocation, there is a high likelihood that all of the last allocation will go to the Extra Large organizations alone.  So, in an effort to help smaller providers "at the end" we should reserve some space for them so that they can get space, even though they request that space less frequently.  

If I understand the existing distribution methodology correctly, if there were only a single /20 available at the end, an Extra Large organization could still be allocated that space, even though they had requested a /16.  With my proposal, that last /20 would only be available to either a Small or Extra Small Organization depending on how much of the percentage for that group had been allocated already.

I used the existing distribution because it seemed a defensible position because it follows historical allocation patterns instead of using some arbitrary assignment of percentages like 75% for Extra Large, 10% for Large, etc.

I hope that helps.  Please feel free to ask for more clarification.

Regards,

Mike

> -----Original Message-----
> From: arin-ppml-bounces at arin.net [mailto:arin-ppml-bounces at arin.net] On Behalf
> Of Scott Leibrand
> Sent: Wednesday, May 21, 2008 3:54 PM
> To: arin-ppml at arin.net
> Subject: Re: [arin-ppml] Policy Proposal: Equitable Distribution of IPv4
> Resources before IPv4 Run out
> 
> Michael,
> 
> Can you help me understand the rationale for this proposal a bit better?
> 
> As I understand it, this proposal would "lock in" the size-based
> distribution of addresses for the remaining ARIN free pool when the IANA
> free pool is exhausted.  That's straightforward enough, but I'm a bit
> unclear as to the "why".  How does locking in such ratios, and reserving
> space for each group, help ensure a more equitable distribution?
> 
> Thanks,
> Scott
> 
> Member Services wrote:
> > ARIN received the following policy proposal. In accordance with the ARIN
> > Internet Resource Policy Evaluation Process, the proposal is being
> > posted to the ARIN Public Policy Mailing List (PPML) and being placed on
> > ARIN's website.
> >
> > The ARIN Advisory Council (AC) will review this proposal at their next
> > regularly scheduled meeting. The AC may decide to:
> >
> >       1. Accept the proposal as written. If the AC accepts the proposal,
> > it will be posted as a formal policy proposal to PPML and it will be
> > presented at a Public Policy Meeting.
> >
> >       2. Postpone their decision regarding the proposal until the next
> > regularly scheduled AC meeting in order to work with the author. The AC
> > will work with the author to clarify, combine or divide the proposal. At
> > their following meeting the AC will accept or not accept the proposal.
> >
> >       3. Not accept the proposal. If the AC does not accept the proposal,
> > the AC will explain their decision via the PPML. If a proposal is not
> > accepted, then the author may elect to use the petition process to
> > advance their proposal. If the author elects not to petition or the
> > petition fails, then the proposal will be closed.
> >
> > The AC will assign shepherds in the near future. ARIN will provide the
> > names of the shepherds to the community via the PPML.
> >
> > In the meantime, the AC invites everyone to comment on this proposal on
> > the PPML, particularly their support or non-support and the reasoning
> > behind their opinion. Such participation contributes to a thorough
> > vetting and provides important guidance to the AC in their deliberations.
> >
> > The ARIN Internet Resource Policy Evaluation Process can be found at:
> > http://www.arin.net/policy/irpep.html
> >
> > Mailing list subscription information can be found at:
> > http://www.arin.net/mailing_lists/
> >
> > Regards,
> >
> > Member Services
> > American Registry for Internet Numbers (ARIN)
> >
> >
> > ## * ##
> >
> >
> > Policy Proposal Name: Equitable Distribution of IPv4 Resources before
> > IPv4 Run out
> >
> > Author: Michael K. Smith
> >
> > Proposal Version: 1
> >
> > Submission Date: 05/20/2008
> >
> > Proposal type: new
> >
> > Policy term: permanent
> >
> > Policy statement:
> >
> > Upon receipt of the last allocation of IPv4 address space to ARIN from
> > IANA, ARIN will reserve address space within the allocated block for
> > Organizations within the defined ARIN Organizational Size determinations
> > (Extra Small, Small, Large, Extra Large) based upon the utilization
> > percentages for each group gathered from the statistics of the last two
> > IANA allocations to ARIN.  In order to make the allocation percentages
> > mathematically feasible, the percentages will be rounded to the closest
> > whole number and, subsequently, the the closest bit boundary for
> > assignment the maximum allocation size for the Organization size as
> > defined by ARIN.
> >
> > Once the final IANA allocation is received, ARIN will publish the
> > allocation percentages that will be used for the final allocation to the
> > PPML and ARIN website with the necessary documentation supporting the
> > assignment of percentages.
> >
> > Rationale:
> >
> > Description:
> >
> > This policy is designed to allow Organizations of the various defined
> > sizes to continue to receive address allocations from the last available
> > space and is slanted towards ensuring that organizations within the
> > Large, Small and Extra Small groups (and more specifically, the Small
> > and Extra Small groups) are able to get additional IPv4 space at the end
> > of the ARIN's ability to allocate such space.  Given the statistics
> > below, it is likely that Extra Large Organizations would get most or all
> > of the last remaining space because given the amount they have been
> > allocated to date.  This policy would help ensure that other
> > Organizations had a statistically equal opportunity to receive space as
> > well.
> >
> >
> > Example:
> >
> > Please see http://www.arin.net/statistics/index.html (Note: the
> > statistics are generated from IP allocations from 2006 and 2007).  This
> > policy would require statistics to be limited to the previous 2 IANA
> > allocations to ARIN.)
> >
> > The present distribution as of May 20th 2008 is:
> >
> > Extra Large: 83.11%
> > Large: 6.75%
> > Small: 9.00%
> > Extra Small: 1.14%
> >
> > With this example, ARIN would reserve address space in the final IANA
> > allocation according to those percentages, to the extent that it is
> > mathematically possible within the existing range. In order to make the
> > math work, rounding would give us:
> >
> > Extra Large: 83%
> > Large: 7%
> > Small: 9%
> > Extra Small: 1%
> >
> > Who is affected:
> >
> > All ARIN Members will be affected by this policy.  I assume that smaller
> > providers will benefit from having some space available to them beyond
> > where they would be with an organic allocation model, and the Extra
> > Large Organizations would experience some pain because, using the model
> > above, they would be excluded from being allocated 17% of the remaining
> > space, even if they had all of the necessary justifications for
> > receiving allocations from within that space.
> >
> > Policy Enforcement:
> >
> > ARIN staff will have to enforce this policy and ensure that allocations
> > stay within the published percentages.
> >
> > Financial and Liability Implications:
> >
> > Financially, there may be additional resources required by ARIN Staff to
> > allocate resources using this model.  These resources might include
> > application development, staff training and tracking of allocations
> > based upon the model.
> >
> > ARIN may have legal liability should Organizations that were denied
> > space according to the model decide to contest the legality of the
> > policy in court.
> >
> > Timetable for implementation:  Upon receipt of finall IANA allocation
> > (roughly 2011).
> >
> > _______________________________________________
> > PPML
> > You are receiving this message because you are subscribed to the ARIN Public
> Policy
> > Mailing List (ARIN-PPML at arin.net).
> > Unsubscribe or manage your mailing list subscription at:
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> > Please contact the ARIN Member Services Help Desk at info at arin.net if you
> experience any issues.
> _______________________________________________
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