[56752] in North American Network Operators' Group
Re: route filtering in large networks
daemon@ATHENA.MIT.EDU (Randy Bush)
Thu Mar 13 07:30:37 2003
From: Randy Bush <randy@psg.com>
Date: Thu, 13 Mar 2003 07:13:10 -0500
To: Andy Dills <andy@xecu.net>
Cc: nanog@merit.edu
Errors-To: owner-nanog-outgoing@merit.edu
> Verio has a history of being a prefix length nazi, but were they
> that way about route validity?
i can only speak in the quite past tense. but yes. due to
limitations of routers (ever try a really long acl on a cisco?)
and some large peers not registering, verio could not filter
large peers inbound.
> Plenty of networks are stringent on what they accept from their
> customers, but are they as stringent with the routes they send?
if stringent == careful, they <bleep>ing well should be. this does
not imply that their inbound business policy must be the same as
their outbound, e.g. customers pay to have their routes announced
no matter how silly. one's peers are not obliged to listen to them.
randy
