[110059] in North American Network Operators' Group
Re: What is the most standard subnet length on internet
daemon@ATHENA.MIT.EDU (Seth Mattinen)
Mon Dec 22 20:24:56 2008
Date: Mon, 22 Dec 2008 17:24:43 -0800
From: Seth Mattinen <sethm@rollernet.us>
To: "nanog@nanog.org" <nanog@nanog.org>
In-Reply-To: <85D6FED5-AB83-4AFD-940F-3A8386216CDB@daork.net>
Errors-To: nanog-bounces@nanog.org
Nathan Ward wrote:
> On 23/12/2008, at 1:31 PM, Seth Mattinen wrote:
>> Anyone running a platform that can't take a full table would apply
>> such a filter to weed out anyone who likes to announce all of their
>> space as /24's for "traffic engineering". If one does that and doesn't
>> announce the aggregate as well, one could find themselves facing
>> random black holes.
>
>
> People are filtering /24s without a 0/0 route?
>
I was just referring to LIR boundaries, but yes, I've seen it happen
where someone splits their /22 into only /24s and doesn't announce the
covering /22.
~Seth
