bgp question route-filtering

From: Dishan Gamage (dishanlg@gmail.com)
Date: Mon Feb 12 2007 - 08:28:37 ART


Hi Group

The setup is as follows

CPE1<----->ebgp<---->-PE2<--ibgp-->-RR<---->-PE1 <---ebgp----> CPE2

CPE1 in AS 100 (directly connected to PE2)

PE1,PE2, RR in AS 65001

CPE2 in AS 200 (directly connected to PE1)

I need to configure in PE1 to block new routes from being advertised to AS
200 (ie CPE2) from AS100 (CPE1)

I tried the following on PE1

ip prefix-list BB1 seq 10 permit 20.1.1.0/24
ip prefix-list BB1 seq 15 permit 5.5.5.0/24

route-map dishan permit 10
 match ip address prefix-list BB1
!
route-map dishan permit 20
 set community no-export

on CPE2, the 20.1.1.0 & 5.5.5.0 were seen, but also along with the rest of
the routes with the community no-export taged !!!

How can i correct this please?? I don't want any new routes to go to AS200

I can only configure PE1

Tks in advance

Dishan



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