Aggregate routes seen as 'suppressed specific' in BGP RIB Out

25985

Created On 09/25/18 19:50 PM - Last Modified 06/12/23 10:14 AM

PAN-OS

Next-Generation Firewall

Symptom

BGP Local RIB on peer does not show aggreagted routes, instead it shows the contributing routes as advertised.

Palo Alto Networks firewall advertising the aggregate route has the following contributing routes:

172.31.2.0/23

172.31.0.0/24

The aggregate route to be advertised is 172.31.0.0/21.

Route aggregation configuration :

BGP RIB Out is found to have "suppressed specific" for aggregate status:

An Export rule for the same set of contributing routes causes the issue :

Removal of the above Export resolves the issue and the BGP RIB Out shows the "aggregate" as status:

BGP Local RIB on peer now shows the aggregate route.