[28805] in North American Network Operators' Group
RE: Private ASN suppression
daemon@ATHENA.MIT.EDU (Dmitri Krioukov)
Tue May 16 18:15:13 2000
From: "Dmitri Krioukov" <dima@dimension.net>
To: <danny@tcb.net>
Cc: <nanog@merit.edu>
Date: Tue, 16 May 2000 18:22:40 -0400
Message-ID: <NCBBIKACLKNMKDHKKKNFOEGJEKAA.dima@dimension.net>
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100% agree. i just wanted to note
that there is another use of
private asns, where confederations
cannot be used at all.
--
dima.
> -----Original Message-----
> From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of
> Danny McPherson
> Sent: Tuesday, May 16, 2000 5:17 PM
> To: nanog@merit.edu
> Subject: Re: Private ASN suppression
>
>
>
>
> Actually, RFC 2270 is only suggested to be used when
> sites are homed to a single provider. In this case,
> there won't be origin AS inconsistencies.
>
> I believe most implementors (some listed, some not) of
> this "remove-private-as" capability only intended for
> it to be used in configurations where the source of the
> route(s) is homed only to a single upstream AS.
>
> -danny
>
> > ...as well as rfc2260.
> >
> > to be more specific, we have to note that two different options
> > are considered there. if you use the first one (read rfc),
> > then you cannot use private asn until you're ok with
> > generating inconsistencies (and it seems from the previous
> > discussions of this topic that this becomes (illegal? ->
> > no answer...) practice for some smaller isps).
> >
> > with the second option of 2260, you can use private asn
> > since the more specific pa routes are always aggregated
> > (and you cannot use confederations, btw).
> >
> > after all, as was noted, remove-private-as on cisco can be
> > replaced by a simple route map, and the attribute manipulation
> > functionality should definitely exist on versalars...
> > --
> > dima.
> >
> >
> >
> >
>
>
