RE: Filtering Best Practices, et al (Was Verio Peering, Gordon's Knot)

["Hallgren, Michael" <michael.hallgren () Teleglobe com>]

> On Wed, Oct 10, 2001 at 10:54:03AM +0200, Stephane Bortzmeyer wrote:
> > > I'm currently in the process of setting up a new border 
> router, and the
> > > recent debate on the above topic got me wondering what 
> the best practice
> > > filtering policy is? Is there one?
> >
> > I'm interested to see if people filter route anouncements 
> on the basis
> > of registered routes in an Internet Routing Registry. In our area
> > (Europe), the RIPE database typically contains less than half of the
> > routes which are actually announced. I assume it is not better in
> > ARINland.
>
> When I worked at Tiscali (World Online) Denmark, we did prefix
> filtering on our peers, the results of that can be seen on
> http://as8807.net/dixirrstats.txt (Though that is old, january this
> year)
> I believe that TeleDanmark also still do IRR filtering, and I know of
> several providers in Denmark who are ready to follow suit as soon as
> some of the "worst IRR-offenders" have updated their IRR 
> records (which
> actually has happened already)
>
> If you decide to implement IRR filtering you may want to see how your
> peers perform in the IRR area by using a small utility, which can be
> downloaded from http://noc.tele.dk/util.html. This is the utility that
> was used to produce the stats for Tiscali's router.

Thanks. (Yes, successfully filtering peers wrt IRR sometimes require human
interaction - asking peer not up-to-date to become so.)

mh

> -- 
> Andreas Plesner Jacobsen