[163991] in North American Network Operators' Group
Re: /25's prefixes announced into global routing table?
daemon@ATHENA.MIT.EDU (Grzegorz Janoszka)
Sat Jun 22 16:16:24 2013
Date: Sat, 22 Jun 2013 22:16:08 +0200
From: Grzegorz Janoszka <Grzegorz@Janoszka.pl>
To: nanog@nanog.org
In-Reply-To: <722494DF-8253-4AEA-BDFF-2BB4D73AF7AD@delong.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 22-06-13 17:30, Owen DeLong wrote:
> 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.
Deaggregating of IPv4 announcements is done for traffic engineering and
to fight ddoses (just the attacked /24 stops being announced to
internet). I think some people will just copy their v4 habits into v6
and then we might have explosion of /48's.
I wouldn't be so sure about just 3-5 prefixes/ASN.
--
Grzegorz Janoszka
