From: Bhaskar Sivanesan (bas_bharath@yahoo.com)
Date: Sun Jun 24 2007 - 04:51:34 ART
Hi Peter/Petr
Thanks for your solutions...... cheers
----- Original Message ----
From: Peter Kingston <kingstonp.ccie@gmail.com>
To: Bhaskar Sivanesan <bas_bharath@yahoo.com>
Sent: Sunday, June 24, 2007 4:32:42 AM
Subject: Re: order of filtering in BGP
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:
route-map
filter-list
prefix-list, distribute-list
For outbound updates the order of preference is:
prefix-list, distribute-list
filter-list
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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