[112784] in North American Network Operators' Group
Re: Redundant AS's
daemon@ATHENA.MIT.EDU (Hank Nussbacher)
Wed Mar 18 04:08:12 2009
Date: Wed, 18 Mar 2009 10:07:20 +0200
To: Henk Uijterwaal <henk@ripe.net>
From: Hank Nussbacher <hank@efes.iucc.ac.il>
In-Reply-To: <49C0A063.8080607@ripe.net>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
At 08:18 AM 18-03-09 +0100, Henk Uijterwaal wrote:
>>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
Why not go after low lying fruit first? If an ASN was assigned years ago
and hasn't appeared in the RIB for the past year that ASN should be
reclaimed. Send warning emails to the registered contacts as well as to
the assigning LIR and after 3 months - just reclaim it.
-Hank
