From: Peter Kingston (kingstonp.ccie@gmail.com)
Date: Sun Jun 24 2007 - 00:33:52 ART
In your example, a route needs to be permitted on each filter, route-map and
as-path access-list to be allowed to be advertised. The order is irrelevant.
The order of preference varies based on whether the attributes are applied
for inbound updates or outbound updates.
For inbound updates the order of preference is:
1. route-map
2. filter-list
3. prefix-list, distribute-list
For outbound updates the order of preference is:
1. prefix-list, distribute-list
2. filter-list
3. route-map
Regards,
Peter Kingston
Studying for CCIE.
On 6/23/07, Bhaskar Sivanesan <bas_bharath@yahoo.com> wrote:
>
> Hi Group
>
> When filtering in BGP, is there any order in which the following filters
> are applied.
>
> filter-list
> prefix-list
> route-map
> unsuppress-map
> etc....
>
> I understand its better to include all kinds of filterign in a single
> route-map, but is situation arises where its required to configure like
> neighbor 1.1.1.1 filter-list 10
> neighbor 1.1.1.1 prefix-list 20 out
> neighbor 1.1.1.1 route-map rm-name out
>
> what would be the order in which each filter is applied...
>
>
>
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