[163981] in North American Network Operators' Group

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Re: /25's prefixes announced into global routing table?

daemon@ATHENA.MIT.EDU (Owen DeLong)
Sat Jun 22 11:33:31 2013

From: Owen DeLong <owen@delong.com>
In-Reply-To: <25F67B54-EE13-4959-8C3A-1C8AC2D19D50@istaff.org>
Date: Sat, 22 Jun 2013 17:30:43 +0200
To: John Curran <jcurran@istaff.org>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org


On Jun 22, 2013, at 12:48 PM, John Curran <jcurran@istaff.org> wrote:

> On Jun 22, 2013, at 1:45 AM, Owen DeLong <owen@delong.com> wrote:
>=20
>> Yes=85 It will probably settle out somewhere around 100-125K routes.
>=20
> Owen -=20
>=20
>  Can you elaborate some on this estimate?  (i.e. what approximations=20=

>  and/or assumptions are you using to reach this number?)
>=20
> Thanks!
> /John

Looking at the number of autonomous systems in the IPv6 routing table =
and the total number of routes, it looks like it will shake out =
somewhere in the neighborhood of 3-5 prefixes/ASN. Since there are =
~35,000 unique ASNs in the IPv4 table, I figured simple multiplication =
provided as good an estimate as any at this early time.

Owen



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