[arin-ppml] Policy Proposal: Extend 16 bit ASN Assignments

Fri May 8 14:16:10 EDT 2009

On Fri, May 08, 2009 at 01:37:43PM -0400, John Sweeting wrote:
> Hi Aaron,
> 
> What changes would you propose to the policy? Or do you just see it as
> totally unnecessary? Thanks.

John,

It is entirely unnecessary.  The only change that should be made IMHO is to revert to default 16bit assignments until Jan 1 2010 or 11 to prevent the 90% return of 32bit ASNs.  That should be enough time to get better vendor support.

Cheers,
Aaron

> 
> 
> On 5/7/09 4:51 PM, "Aaron Hughes" <aaronh at bind.com> wrote:
> 
> > 
> > 
> > I oppose this policy as written.
> > 
> > Looking at ARIN's historical statistics, it appears as though ARIN issues
> > 1,600 to 1,700 ASNs each year.
> > 
> > Looking at IANA's stats:
> > 35840-36863 Assigned by ARIN 2005-02
> > 39936-40959 Assigned by ARIN 2006-03-29
> > 46080-47103 Assigned by ARIN 2008-03-27
> > 53248-54271 Assigned by ARIN 2009-04-21
> > 54272-55295 Assigned by ARIN 2009-04-21
> > Excluding April 2009, ARIN has only requested 3,072 ASNs since February 2005.
> > 
> > Looking again at ARIN's historical statistics, they have issued 6,550 ASNs
> > from 2005 through 2008, but have only gotten 3,072 ASNs from the IANA.
> > 
> > Where's the difference?
> > In San Antonio, Leslie gave a presentation that included information about
> > returned and revoked ASNs. Slide 10 of the presentation indicates 4,357 ASNs
> > have been returned to ARIN since January 2005.
> > 
> > So it looks like ARIN is recycling unused ASNs, prolonging the lifespan of the
> > free 16-bit ASN pool.
> > Projecting this forward, at current consumption rates it should take
> > approximately 32 months for ARIN to use up the 2,048 ASNs issued on 2009-04-21
> > by IANA, which puts us somewhere near December 2012.
> > 
> > ARIN's historical statistics:
> > https://www.arin.net/knowledge/statistics/historical.html
> > IANA's stats:
> > http://www.iana.org/assignments/as-numbers/
> > Presentation foils:
> > https://www.arin.net/participate/meetings/reports/ARIN_XXIII/ppt/wednesday/rsd
> > .ppt
> > 
> > Cheers,
> > Aaron
> > 
> > 
> > On Thu, May 07, 2009 at 01:19:36PM -0700, Scott Leibrand wrote:
> >> > I disagree.  We are still waiting to get a release of the code train we
> >> > use on the Cisco 7600 platform that supports 32-bit ASNs.  It sounds
> >> > like they're finally getting close, but I think a further extension
> >> > probably would be helpful.
> >> >
> >> > We'll have a much better view of what's required by the fall meeting,
> >> > when this is up for discussion.  Since that will be our last chance to
> >> > change policy before the current 1 Jan 2010 deadline, I definitely think
> >> > this needs to be on the agenda.
> >> >
> >> > -Scott
> >> >
> >> > Owen DeLong wrote:
> >>> > > NIT:  The revised text of 5.1 (or at least specific amendments to it)
> >>> > > should be
> >>> > > stated as part of the Policy statement. The rationale section is not a
> >>> > > binding
> >>> > > part of the policy.
> >>> > >
> >>> > > Substance: This policy simply isn't needed. Current software for most
> >>> > > routers supports 32 bit ASNs. There's been ample warning for providers
> >>> > > and other organizations to update their management systems, scripts,
> >>> > > etc. If they haven't done it by now, they are only going to do it in
> >>> > > response
> >>> > > to the change actually happening.  Putting it off further does not
> >>> really
> >>> > > benefit the community.
> >>> > >
> >>> > > I am opposed to this policy as written.
> >>> > >
> >>>> > >> ## * ##
> >>>> > >>
> >>>> > >>
> >>>> > >> Policy Proposal Name: Extend 16 bit ASN Assignments
> >>>> > >>
> >>>> > >> Proposal Originator: Marla Azinger
> >>>> > >>
> >>>> > >> Proposal Version: 1
> >>>> > >>
> >>>> > >> Submission Date: 6 May 2009
> >>>> > >>
> >>>> > >> Proposal type: Modify
> >>>> > >>
> >>>> > >> Policy term: Permanent
> >>>> > >>
> >>>> > >> Policy statement: This proposal is to modify section 5.1 in the NRPM
> to
> >>>> > >> extend the 16-bit ASN assignment timeframe for one more year further
> >>>> > >> than the current text. The expiration requiring removal of section 5.1
> >>>> > >> is also being removed.
> >>>> > >>
> >>>> > >> Rationale:
> >>>> > >>
> >>>> > >> Currently users of 32-bit ASN?s are encountering technical issues that
> >>>> > >> they can?t immediately overcome and therefore require 16-bit ASN?s to
> >>>> > >> operate. As a result in the ARIN region to date, 204 of the 216 32-bit
> >>>> > >> ASN?s that have been assigned have been returned and exchanged for a
> 16
> >>>> > >> bit ASN. On 1 JAN 2010 ARIN policy declares zero distinction between
> >>>> > >> 32-bit and 16-bit ASN?s. This proposal is to change the date on the
> >>>> > >> third line of NRPM 5.1 and extend the timeframe for 16 bit ASN?s to be
> >>>> > >> assigned. If these changes are made then ARIN RIR ASN policy will read
> >>>> > >> clearly and remove any misconceptions of 16-bit cutoff post run out
> and
> >>>> > >> enable technology to catch up to the ASN bit change. The expiration
> date
> >>>> > >> that requires removal of section 5.1 after zero distinction occurs is
> to
> >>>> > >> be removed. Instead section 5.1 will be left in place in the NRPM for
> >>>> > >> value added historical purposes.
> >>>> > >>
> >>>> > >> The revision of 5.1 would read as follows:
> >>>> > >>
> >>>> > >> 5.1 16-bit and 32-bit AS Numbers
> >>>> > >>
> >>>> > >> ? Commencing 1 January 2007, ARIN will process applications that
> >>>> > >> specifically request 32-bit only AS Numbers and assign 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 assigned.
> >>>> > >>
> >>>> > >> ? Commencing 1 January 2009, ARIN will process applications that
> >>>> > >> specifically request 16-bit only AS Numbers and assign 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 assigned.
> >>>> > >>
> >>>> > >> ? Commencing 1 January 2011, ARIN will cease to make any distinction
> >>>> > >> between 16-bit only AS Numbers and 32-bit only AS Numbers, and will
> >>>> > >> operate AS number assignments from an undifferentiated 32-bit AS >>>>
> Number
> >>>> > >> pool.
> >>>> > >>
> >>>> > >> 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 65,536 -
> >>>> > >> 4,294,967,295
> >>>> > >>
> >>>> > >> ? "32-bit AS Numbers" refers to AS Numbers in the range 0 -
> >>>> > >> 4,294,967,295
> >>>> > >>
> >>>> > >> Timetable for implementation: Immediate
> >>>> > >>
> >>>> > >>
> >>>> > >> _______________________________________________
> >>>> > >> 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:
> >>>> > >> http://lists.arin.net/mailman/listinfo/arin-ppml
> >>>> > >> Please contact info at arin.net if you experience any issues.
> >>> > >
> >>> > > ------------------------------------------------------------------------
> >>> > >
> >>> > > _______________________________________________
> >>> > > PPML
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> >> > --
> >> > PPML
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> > 
> > --
> > 
> > Aaron Hughes
> > aaronh at bind.com
> > (703) 244-0427
> > Key fingerprint = AD 67 37 60 7D 73 C5 B7 33 18 3F 36 C3 1C C6 B8
> > http://www.bind.com/
> > _______________________________________________
> > PPML
> > You are receiving this message because you are subscribed to
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> > Unsubscribe or manage your mailing list subscription at:
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> > Please contact info at arin.net if you experience any issues.
> > 
> 
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-- 

Aaron Hughes 
aaronh at bind.com
(703) 244-0427
Key fingerprint = AD 67 37 60 7D 73 C5 B7 33 18 3F 36 C3 1C C6 B8
http://www.bind.com/