From: Joseph Saad (joseph.samir.saad@gmail.com)
Date: Thu Oct 11 2007 - 15:54:18 ART
They are doing the same thing for this scenario.
You need to note that SUPPRESS map work for all neighbors (i.e. all the BGP
process) and UNSUPRESS map work per neighbor.
I'd use the suppress-map if I want to block advertising a subset of the
aggregate longer prefixes to all neighbors.
Then further you can selectively advertise specific longer prefix per
neighbor using the unsupress-map per neighbor.
On 10/11/07, shiran guez <shiranp3@gmail.com> wrote:
>
> *Hi*
> **
> *I would like to know if there is a difference between the following
> scenario:*
> **
>
>
> aggregate-address 10.0.0.0 255.252.0.0 summary-only
> nei x.x.x.x remot-x
> nei x.x.x.x unsuppress-map 10_UNSUP
>
> ip prefix-list OPEN_10 permit 10.0.0.0/16
> ip prefix-list OPEN_10 permit 10.1.0.0/16
> ip prefix-list OPEN_10 permit 10.2.0.0/16
> ip prefix-list OPEN_10 permit 10.3.0.0/16
>
> Route-map 10_UNSUP
> match ip address prefix OPEN_10
>
> *to the following scenario:*
>
> aggregate-address 10.0.0.0 255.252.0.0 suppress-map 10_UNSUP
> nei x.x.x.x remot x
> nei x.x.x.x unsuppress-map 10_UNSUP
>
> ip prefix-list OPEN_10 permit 10.0.0.0/16
> ip prefix-list OPEN_10 permit 10.1.0.0/16
> ip prefix-list OPEN_10 permit 10.2.0.0/16
> ip prefix-list OPEN_10 permit 10.3.0.0/16
>
> Route-map 10_UNSUP
> match ip address prefix OPEN_10
>
> as when I tested it it look like it is giving the exact same result but
> with
> the summary-only a little bit less confusing as far as configuration.
>
>
>
>
>
> --
> Shiran Guez
> MCSE CCNP NCE1
> http://cciep3.blogspot.com
> http://www.linkedin.com/in/cciep3
>
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