3.7.d Implement optimize and troubleshoot routing policies

3.7.d [iii] Outbound route filtering

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bgp_orf

read the opening paragraph from rfc5291 in the diagram:

or read the whole thing here: https://tools.ietf.org/html/rfc5291

configure bgp between AS 100 and AS 200; advertise the lo’s from PE1. debug bgp updates.

bgp_orf_01

bgp_cap_orf.type

turn on the orf capability for both sides:

bgp_orf_02

set up a prefix-list and make PE1 send only the routes you want.

bgp_orf_03

 what i like about the debug is you don’t need to check the bgp table…

if you don’t want to be all godzilla when you clear bgp, (like if it’s a production network) the softer way is illustrated below:

bgp_orf_04

have fun orf’ing off…