[112782] in North American Network Operators' Group
Re: Redundant AS's
daemon@ATHENA.MIT.EDU (Henk Uijterwaal)
Wed Mar 18 03:53:01 2009
Date: Wed, 18 Mar 2009 08:18:59 +0100
From: Henk Uijterwaal <henk@ripe.net>
To: tvest@eyeconomics.com
In-Reply-To: <5021774B-6774-4DF9-8864-DC45A184BCAA@eyeconomics.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
tvest@eyeconomics.com wrote:
>
> On Mar 17, 2009, at 11:47 AM, Simon Brilus wrote:
>
>> Out of interest, is there a report that details the number of unused
>> older AS's in the Internet and what is being done to recover them to
>> recycle, as we approach the 53k mark and the 32 bit numbering scheme,
>> it strikes me that we probably have a lot of stagnant AS's out there
>> due to takeovers etc..
>>
>> Any thoughts?
>>
>> Simon
>
> It's a bit dated now, but the RIPE report, ASN MIA, sounds like what
> you're looking for...
> www.apnic.net/meetings/21/docs/sigs/routing/routing-pres-uijterwaal-asn-mia.ppt
When I look at this more recently, the conclusion still seems to be
valid: we'll run out of 16 bit ASN's somewhere in 2011 to 2013. There
are a lot of unused ASN's out there. Recovering them will postpone the
problem by a few years but it won't solve it. The basic problem with
recovery is how to decide if an ASN is really no longer used/needed.
There is (still) no mechanism to do this.
Henk
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