Re: Verio Decides what parts of the internet to drop

["Alex P. Rudnev" <alex () virgin relcom eu net>]

It should be your problem. You simply loss the part of connectivity...

The real world is more complex than you drawn below. There is many reasons
causing people to announce class-B networks with the short prefixes.





On Thu, 2 Dec 1999, Randy Bush wrote:

> Date: Thu, 02 Dec 1999 13:00:17 -0800
> From: Randy Bush <rbush () bainbridge verio net>
> To: doug () safeport com
> Cc: nanog () merit edu
> Subject: Re: Verio Decides what parts of the internet to drop
>
>
> > 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.
>
> 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.
>
> 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.
>
> 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.
>
> > With no notification.
>
> verio's policy has been constant and public.
>
> randy

Aleksei Roudnev,
(+1 415) 585-3489 /San Francisco CA/