[26045] in North American Network Operators' Group
Re: Verio Decides what parts of the internet to drop
daemon@ATHENA.MIT.EDU (Alex Rubenstein)
Thu Dec 2 18:03:14 1999
Date: Thu, 2 Dec 1999 18:02:53 -0500 (Eastern Standard Time)
From: Alex Rubenstein <alex@nac.net>
To: Randy Bush <rbush@bainbridge.verio.net>
Cc: doug@safeport.com, nanog@merit.edu
In-Reply-To: <E11tdKr-000L6D-00@rip.psg.com>
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Errors-To: owner-nanog-outgoing@merit.edu
Normally I agree with Randy (cough) but:
On Thu, 2 Dec 1999, Randy Bush wrote:
> > Apparently for their convenience Verio has decided what parts of the
> > Internet I can get to.
>
> verio does not accept from peers announcements of prefixes in classic b
> space longer than the allocations of the regional registries.
Simply put, thats dumb. I can't imagine a technical reason for this (CPU
and/or memory), so it must be politcal.
> we believe our customers and the internet as a whole will be less
> inconvenienced by our not listening to sub-allocation prefixes than to have
> major portions of the network down as has happened in the past. some here
> may remember the 129/8 disaster which took significant portions of the net
> down for up to two days.
I believe that if I have a customer who is multihomed between me and
another provider, his punch-throughs to the non-address-space-providing
provider should be heard. It's called 'global routability.'
> the routing databases are not great, and many routers can not handle ACLs
> big enough to allow a large to irr filter large peers. and some large peers
> do not register routes.
There are ways to get around this (as-path filtering, maximum-paths, etc)
that aren't as nazi as one would hope, but will prevent stupidity and
provide sanity checking.
> so we and others filter at allocation boundaries and have for a long time.
> we assure you we do not do it without serious consideration or to torture
> nanog readers.
Heh.
> > With no notification.
>
> verio's policy has been constant and public.
But unfortunate. Will they announce a customer-announced /24?
