POLICY 40-1: The administrator wants the outgoing traffics destined to AS 20 to utilize the link to router R9. For this purpose router R8 modifies the Weight parameter as an inbound policy in order to influence the outgoing traffics destined to AS 20.

POLICY 40-2: The administrator wants to control routing policies in the upstream service provider network (in this scenario AS 10) in order to influence the incoming traffics from AS 10 destined to AS 40. For this purpose router R8 sends signal to AS 10 using Community attributes as an outbound policy in order to influence the incoming traffics from AS 10 to go through AS 30 to reach AS 40 and not through the direct link to AS 10.