The main objective of this work is to study the fundamental challenges and design criteria to support inter-domain policy distributions and effective traffic engineering. In this work, we make a case for separating the functions of policy distributions and inter-domain traffic engineering from BGP. As an inter-domain routing protocol, BGP will be used solely for propagating reachability information to achieve global Internet connectivity. We propose to design a new overlay infrastructure for policy distribution and negotiation. This overlay network will consist of policy agents residing in different Autonomous Systems (ASes) and communicate with one another via a light-weight protocol. This new set of agents and protocols should co-exist and interact with the existing protocols and router mechanisms.
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