This paper presents Wiser, an Internet routing protocol that enables ISPs to jointly control routing in a way that produces efficient end-to-end paths even when they act in their own interests. Wiser is a simple extension of BGP, uses only existing peering contracts for monetary exchange, and can be incrementally deployed. Each ISP selects paths in a way that presents a compromise between its own considerations and those of other ISPs. Done over many routes, this allows each ISP to improve its situation by its own optimization criteria compared to the use of BGP today. This paper evaluates Wiser using a router-level prototype and simulation on measured ISP topologies.
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