[161532] in North American Network Operators' Group
Re: [c-nsp] DNS amplification
daemon@ATHENA.MIT.EDU (Joe Abley)
Tue Mar 19 14:15:21 2013
From: Joe Abley <jabley@hopcount.ca>
In-Reply-To: <CAL9jLaYgcbTdsor5VyuBOQ7hLZiQ-Sk72yemzcFpcD0sVbyL+g@mail.gmail.com>
Date: Tue, 19 Mar 2013 14:12:14 -0400
To: Christopher Morrow <morrowc.lists@gmail.com>
Cc: "nanog@nanog.org Group" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 2013-03-19, at 13:50, Christopher Morrow <morrowc.lists@gmail.com> =
wrote:
> On Tue, Mar 19, 2013 at 1:45 PM, David Conrad <drc@virtualized.org> =
wrote:
>> On Mar 19, 2013, at 10:12 AM, Christopher Morrow =
<morrowc.lists@gmail.com> wrote:
>>> There's nothing inherent in BGP that would not work with an
>>> unconstrained growth of the routing table, right? You just need =
enough
>>> bandwidth and interrupts to deal with updates.
>>=20
>> With enough thrust, pigs fly quite well. Landing can get messy =
though...
>=20
> I was being serious... the current 'bgp unconstrained dies' problem
> isn't such a problem if you have (today):
We've been watching unconstrained growth of the routing table for quite =
some time, and the result is an Internet that still keeps the unwashed =
masses Harlem shaking. It doesn't *look* like a picture of dramatic, =
world-ending instability.
There's no obvious indicator in the story so far to confirm the =
prediction "unconstrained growth of the routing table will kill the =
Internet". Which is not to say that the prediction is wrong, but at some =
point you've got to look at the guy wearing the sign with the crazed =
expression and wonder whether he's a couple of sandwiches short of a =
picnic.
You could say that growth in the routing system to date *has* been =
constrained, by economics or regulation or RIR policies or uptake of =
32-bit AS numbers or something else, and express concern that those =
constraints are changing and that change is dangerous. But after a while =
your hands get tired and you have to stop waving them.
We've been saying "unconstrained growth bad" for BGP for years. =
Presumably we're not all insane. Where is the science?
Joe
