From: Ben (bmunyao@gmail.com)
Date: Tue Sep 18 2007 - 11:09:42 ART
Hi Tom
Ordinarily you use the "area range" command to summarize subnets in an area.
It suppresses the specifics and sends only the summary (LSA3) to the other
areas.
"area range not-advertise" is a filtering mechanism for inter-area routes.
You use it when the task requirement is for you to filter out certain
specifics from being advertised to other areas, and there are restrictions
e.g. do not use "area filter-list"
HTH
Ben
On 9/18/07, ccie preparation <ccie22@gmail.com> wrote:
>
> Folks,
> I am confussed about area range command do-not-advertise
> option.
> the documentation says
>
> not-advertise :Sets the address range status to DoNotAdvertise. The Type 3
> summary LSA is suppressed and the component networks remain hidden from
> other networks.
>
> Does it mean that the abr would block the summart and the specifics? what
> is
> the point then?
>
> also the default behaviour is to send the summary and specifics together?
>
> Thanks,
> Tom
>
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