[106093] in North American Network Operators' Group
RE: virtual aggregation in IETF
daemon@ATHENA.MIT.EDU (Paul Francis)
Sun Jul 20 10:13:04 2008
Date: Sun, 20 Jul 2008 10:12:13 -0400
In-Reply-To: <C4A8B209.14595%alain_durand@cable.comcast.com>
From: Paul Francis <francis@cs.cornell.edu>
To: "Alain Durand" <alain_durand@cable.comcast.com>,
<nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
Certainly in principle it can, though that is not in the current =
proposal.
The basic idea is to suppress installing routes into the FIB when there =
is a
"virtual aggregate" that you can tunnel to instead.
I remember we discussed this in San Jose NANOG, but I forget the =
details.
Can you remind me?
PF
> -----Original Message-----
> From: Alain Durand [mailto:alain_durand@cable.comcast.com]
> Sent: Sunday, July 20, 2008 9:13 AM
> To: Paul Francis; nanog@nanog.org
> Subject: Re: virtual aggregation in IETF
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> Paul,
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> Can this proposal be applied to IS-IS (or other IGP) as well as BGP?
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> - Alain.
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>=20
> On 7/20/08 8:46 AM, "Paul Francis" <francis@cs.cornell.edu> wrote:
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> > Gang,
> >
> > I have submitted an internet-draft to the IDR group on virtual
> aggregation
> > (VA) =
(http://www.ietf.org/internet-drafts/draft-francis-idr-intra-va-
> 00.txt).
> > This draft suggests a few changes to routers that allow operators to
> control
> > the size of their FIBs, shrinking them by 5x or 10x quite easily.
> This would
> > extend the lifetime of routers that are constrained by FIB size.
> >
> > There has been a lively discussion of this on the IDR mailing list,
> including
> > a suggestion that FIB reduction is more important for lower tier =
ISPs
> (tier
> > 2, tier 3...) than for tier 1 ISPs. Unfortunately I don't think =
that
> people
> > from smaller ISPs pay much attention to the IDR mailing list, so =
they
> are not
> > being represented in this discussion.
> >
> > So I'm looking for input from folks who think that FIB reduction
> helps them,
> > so as to better understand their requirements.
> >
> > Any help is much appreciated.
> >
> > Thanks,
> >
> > PF
> >
> >
> >
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