virtual aggregation in IETF

Alain Durand alain_durand at
Sun Jul 20 13:12:41 UTC 2008


Can this proposal be applied to IS-IS (or other IGP) as well as BGP?

   - Alain.

On 7/20/08 8:46 AM, "Paul Francis" <francis at> wrote:

> Gang,
> I have submitted an internet-draft to the IDR group on virtual aggregation
> (VA) (
> 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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