[j-nsp] ISIS Case Study in JNCIP..Summarization into Backbone

[Hoogen]

Thank you Daniel and Farooq.
-Hooge

On Fri, Sep 18, 2009 at 2:55 AM, Daniel Verlouw <daniel at bit.nl> wrote:

> On Fri, 2009-09-18 at 01:16 -0700, Hoogen wrote:
> > Now from my understanding of the question I need to deny the longer more
> > specific routes... on R5 filter saying 172.16.40/29 longer the reject...
>
> yes it is quite common to suppress the more specifics. A more scalable
> approach would be to use the 'aggregate-contributor' match condition to
> suppress the more specifics, e.g.:
>
> term accept-aggregates {
>  from {
>    protocol aggregate;
>   }
>  to level 2;
>  then accept;
> }
> term reject-more-specifics {
>  from {
>    aggregate-contributor;
>  }
>  to level 2;
>  then reject;
> }
>
>
>   --Daniel.
>
>