Re: Policies: Routing a subset of another ISP's address block

["Niels Chr. Bank-Pedersen" <ncbp () bank-pedersen dk>]

On Sat, Apr 08, 2000 at 07:59:26PM +0200, Hank Nussbacher wrote:
> At 21:04 07/04/00 -0400, Dmitri Krioukov wrote:
>
> The route object described in http://www.ripe.net/ripe/docs/ripe-189.html
> states that origin AS is a single occurence.  RIPE-189 should then be
> updated to allow multiple occurences of the origin tag.

Actually, some additions to that effect has allready been made:

  http://www.ripe.net/ripe/docs/ripe-189.html#sec:crossnot

It doesn't specifically allow originating routes from more than
one AS, but it does mention that this can be done in multihoming
scenarions.

> -Hank

/Niels Chr.

> > it does generate inconsistent origin as'es and it does break
> > path filters, but not only. it breaks all the tools/methods
> > based on the uniqueness of the route->origin-as mapping. i'm
> > looking for a more or less complete list of these tools/methods.
> >
> > it seems, though, that the inconsistent-as list is growing and
> > this doesn't produce too much panic.
> >
> > and if you examine this list more closely, you'll notice that it
> > looks like the major part of it is generated by the isps doing
> > the aforementioned trick.
> > --
> > dima.

[...]


-- 
 Niels Christian Bank-Pedersen, NCB1-RIPE.
 Network Manager, Tele Danmark NET, IP-section.

 "Hey, are any of you guys out there actually *using* RFC 2549?"