From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Fri Nov 21 2003 - 15:05:18 GMT-3
The send/receive/both option specifies whether you can send to
an upstream neighbor a prefix for them to filter with, whether you can
receive a prefix from a downstream neighbor to filter out to them, or
both.
The final step which is not as clear as it should be is to apply
a prefix-list inbound to the upstream peer. You can verify that its
working by going to the upstream peer and doing a 'sh ip bgp nei x.x.x.x
advertised' From this output you should see only what is matched in the
downstream peer's prefix-list.
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 708-362-1418 (Outside the US and Canada)
-----Original Message-----
From: pita40 [mailto:pita40@hotmail.com]
Sent: Friday, November 21, 2003 10:15 AM
To: bmcgahan@internetworkexpert.com
Subject: Fw: BGP Prefix-Based Outbound Route Filtering
Can some you post a good example when to use BGP Prefix-Based Outbound
Route Filtering. The example in CCO did not do justice to the topic.
When you configure the command do you need to have a prefix-list
associated with it? Below is CCO example
router bgp 100
address-family ipv4 unicast
neighbor 172.16.1.2 remote-as 200
neighbor 172.16.1.2 capability orf prefix-list send
router bgp 100
address-family ipv4 unicast
neighbor 192.168.1.2 remote-as 200
neighbor 192.168.1.2 capability orf prefix-list both
Also what is the difference with the command below from
capability orf prefix-list send above
router bgp 100
neighbor 176.16.1.2 capability orf prefix-filter send
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